Midterm 3- Split pea Flashcards

1
Q

Sensory response pathway of plants

A

1)Sensory cells perceive a stimulus and transduces the information to an internal signal
2)Cell-Cell Signal released by the sensory cells travels throughout the body
3)Target cells receive the signal and change activity in a way that produces an appropriate response.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Receptor proteins

A

Detect environmental signals and change shape transferring the signal into an internal signal usually with a hormone

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Signal Molecules

A

Located within the cell and elicit a response when bound to a matching receptor

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Two methods of signal transduction

A

1)Phosphorlaytion, change of ADP into ATP on an associated protein
2)Secondary messengers: Trigger production of release of inter cellular signals that amplify a signal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Different type of response to signals

A

1)Activate membrane transport
2)Change in electrical potential or Ph
3)Change in gene expression

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Phototropisim

A

Directed movement of plants in response to blue light

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Why do plants bend towards blue light?

A

Blue light triggers the opening of stoma allowing for photosynthesis to occur

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Photoreceptors

A

Receptors that detect blue light and intitate the phototropic response

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Coleoptile

A

Protective sheath that is found on the tip of the plant that promotes the movement of plants towards light

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Fritz Went experiment

A

Use of Mica (horomone blocking) and Agar(Hormone tranducting) in between coleptile and plant, the agar would allow movement to occur where as the mica did not

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Auxin

A

Hormone that signals for plant elongation on the side opposite to detected light, promotes fruit development, leaf and fruit falling, differentiate xylem and phloem as well as vascular cambium, and simulates root growth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Auxin receptors

A

1)ABP1=Extracellular response
2)T1R1=Intracellular response

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Acid growth hypothesis

A

1)Auxin triggers H+ pumps lowering the Ph to 4.5
2)Lowered Ph triggers expanisins to cut H bonds between cellulose and other cell wall polymers loosening the cell wall
3)K+ wants to restore chemical gradient so moves into the cell and brings water with it, expanding the cell

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Role of Red light and Far red light in plants

A

Red light acts as an on switch for germination and far red light acts as an off switch for germination

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Phytochrome and their conformations

A

Absorbs both red and far red light
Pr: Has absorbed FR light and needs red light, no germination occurs
PFR: Has absored Red light and needs FR light to change back, germination occurs

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Etiolation

A

When no blue light is present then the plant grows extremly long, narrow, thin, and pale to try and break to the light

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

De-etoliation

A

Once light levels are sufficient stem growth slows and now energy is invested in chloroplast and leaves

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Photoperiodism

A

Plants internal clock that is controlled by the CO gene, in short day plants they only flower during short days and long day plants only flower in long days

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Effect of red and far red on photoperiodism

A

Red light triggers a daylight response and far red light triggers a night response

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Florigen

A

Flowering horomone

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Flowering Locus

A

Gene that promotes flowering when activated, it triggers the apical meristem to activate and form a flower.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Heliotropism

A

Tendency for certain plants to track the movement of the sun throughout the day and then reset over the course of the night

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Heliotropisim and plant development

A

1)Tethered stems that cannot response to light photosynthesis less
2)As plant growth slows so did sunlight tracking
3)Auxin is expressed alternating amounts due to gene expression

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Gravitropisim

A

Movement of roots downward in response to gravity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

Statolith hypothesis

A

Hypothesis that states that the movement of roots downward is due to amyloplasts filled with starch, the startch grannuales are heavy and move to the tip of the roots activating pressure receptors

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

Gravitropisim and Auxin

A

1)Auxin flows normally untill the root is tipped to one side
2)Gravity sensing cells redistribuste the auxin towards the bottom of the root
3)Change in auxin levels trigger growth on the top side and slow the growth on the bottom side leading to a downward bending of the root

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

Root vs shoot response of auxin

A

In shoots the auxin causes the plant to bend towards the light, in the shoot it cause the plant to bend away from gravity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

Wind response of plants

A

Plants produce shorter and stiffer stems in response to proteins produced when wind is detected by the plant

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

Thigmotropism

A

Movement in response to touch, tendrils will contact and object and grow towards it (pos) or roots will contact and object and move away from it (neg)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

Thigmotropism and Venus fly trap triggering

A

1) At rest
2)Depolarization from opening of Ca2+ channels
3)Activation of K+ channels to slow depolarization
4)Peak depolarization dominated by K+
5)Initial re polarization due to K+ now moving out of the cell
6)Final repolarization and hyper polarization
7)Further hyper polarization to prevent consecutive firing

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

Diffrence in plant vs animal action potentials

A

Plants: Ca2+ and K+ signals, -120mv resting potential, H+ repolarization, slow speed and long cool down
Animal:Na+ and K+ signal, -70mv resting potential, Na+ and K+ repolarization, high speed and fast cool down

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

Cytokinens

A

Made in the root meristem and move up the plant, regulate growth by binding receptors that modify the cell cycle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
33
Q

Cell cycle phases

A

G1 GAP1
S Synthesis
G2 GAP2
M Mitosis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
34
Q

CDC25

A

Triggers mitosis from the G2 phase via dephosphorlation by CDK

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
35
Q

CYCD3

A

Triggers G1->Sphase via phosphorlation with CDK

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
36
Q

ABA

A

Inhibits growth and seed germination when conditions are unoptimal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
37
Q

Gibberellions

A

Simulate plant growth and are involved incoverting the endosperm of seeds into sugar

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
38
Q

Requirements to trigger plant germination

A

1)H20
2)O2
3)Warm temperature
4)Damage or tampering of the seed coat
5)Small seeds will need red light

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
39
Q

Process of germination triggered by gibberllions

A

1)Seed absorbs water
2)Gibberellons diffuse to the aleurone layer
3)Amylase is released and breaks down endosperm
4)Sugar is made available for growth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
40
Q

ABA stoma closing

A

1)ABA reaches gaurd cells inhibiting H+ ATPases
2)Cl- channels open and anions leave
3)K+ follows
4)Water leaves the cell and the guard cells are flaccid and stomata closing

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
41
Q

Blue light stoma opening

A

1)Blue light stimulates photoreceptors allowing H+ to move out fo the cell
2)Cl- and K+ move into cell with water
3)Swollen guard cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
42
Q

Brassinosteroids

A

Regulate the growth and plant body size, control cell division and root and shoot growth.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
43
Q

Brassinosteroid receptors

A

BRI1-Outer plant receptor
BRL- promotes phosphorylation inside of the cell

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
44
Q

Ethylene

A

A gas hormone Involved in fruit ripening, leaf abscission and flower senescence. It converts starch into sugar, breaks down cell walls and chlorophyll

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
45
Q

Cellulose microfibrils

A

Fibres inside of the stomata preventing it from expanding forcing it into the bean shape that is associated with stomata opening.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
46
Q

Four types of Mechanical defence

A

1)Bark
2)Waxy cuticle
3)Spikes,prickles, and thorns
4)Trichomes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
47
Q

Difference between spines, prickles, and thorns

A

Spines are modified leaves, Thorns are modified stems to prevent large herbivores, and prickles are modified epidermis that prevents smaller animals from predating on them

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
48
Q

Gladular Trichome

A

Elongated shape that secret compounds like resin or formic acid and histones

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
49
Q

Non gladular trichomes

A

Short and stiff trichomes that can be used to slow down insect movement and prevent proboscis insertion into the plant

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
50
Q

Gorgons dewstick adaptation

A

Has trichomes that secret a sticky resin to attract and trap insects

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
51
Q

Peppermint adaptation and Human use

A

Methol and Menthone repel bugs, humans use it for flavor

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
52
Q

Lemon adaptation and Human use

A

Citrol slows down insect respiration and inhibits their movements and reaction time, humans use it for flavor and as insect repellent

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
53
Q

Pine tree adaptation and Human use

A

Pinene repels insects, humans use it as a solvent and feul

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
54
Q

Tanins and Human use

A

Derived from chloroplasts and inhibits herbivores digestion by binding to digestive proteins. Humans use it as a dye, leather tanning, preserving iron etc.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
55
Q

Pyrethroid and Human use

A

Found in crysanthmums, prevents the closing of sodium channels in insects, humans use it to treat parasites, pesticide, and mosquito control

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
56
Q

Opium, caffeine, nicotine and Human use

A

Caffine->Nervous system protein disruption
Opium and Nicotine->Blocks firing of action potentials
Humans: Stimulants and pain killers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
57
Q

Stinging nettles adaptation

A

Injection of formic acid and histones using trichomes that act as hypodermic needles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
58
Q

Inducible plant defences

A

Defences that only activate when a threat is present

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
59
Q

Constituent plant defences

A

Plant defences that are always being produced by the plant

60
Q

3 adaptation types for plants vs insects

A

1)Antixenosis- Disrupts insect behaviour
2)Tolerance- Insects are capable of tolerating toxin
3)Antibiosis- Affects the physiology of the insect

61
Q

Ways insects use plants

A

1)Herbivory- directly eaten
2)Phloem feeding- drink the sugar water
3)Egglaying

62
Q

Hypersensitive response

A

Response induced in plants when pathogens are present
1)Stomata close
2)Toxins are produced
3)sugars are moved into the cytosol
4)Cell walls thicken to restrict movement
5)Cells infected rapidly die

63
Q

Systemic acquired resistence

A

PR gene signals to produce hormones that warn the rest of the plant of infection, they also attack cell walls of pathogens, and stimulate the strengthening of cell walls.

64
Q

Protease inhibitor

A

Type of molecule that block the digestive proteases of predators that disrupt that herbivores ability to digest the plant

65
Q

Systemin

A

Signals for undamaged cells to prepare for predator
1)Systemin is released from damaged cells
2)Hormone travels via the phloem to the membrane receptors
3)Triggers production of Jasmonic acid
4)Activates transcription of protease inhibitors

66
Q

Volatile compounds

A

Compounds release into the air that warn other plants of herbivoires

67
Q

Pheromone defense

A

Plants produce pheromones to signal for other species that eat it’s predetors

68
Q

Positive feedback of climate change

A

1)Warmer climates more fires,more co2
2)melting icecaps, less solar reflection
3)Tundra melting releasing co2

69
Q

Negative feedback of climate change

A

Plants like co2 so more plants will grow

70
Q

4 outcomes of heat on a plant

A

1)Energy is absorbed
2)Heat dissipation
3)Convection heat loss
4)Evaporation cooling

71
Q

Bowen ratio

A

Heat loss via convection/ heat loss via evaporation, when water is sufficient Bowen ration is low

72
Q

C3 plant

A

Traps both CO2 and O2 in the spongy mesophyl meaning the two compete for the binding site of rubsico

73
Q

C4 plants

A

Spatial separation of CO2 and O2 inside of the plant allowing more CO2 to bind to RUBISCO

74
Q

CAM plants

A

Temporal separation of CO2 and O2, CO2 is collected at night and then processed during the day

75
Q

CAM idling

A

permits survival under extreme water loss where somata close during both the day and night time

76
Q

Affect of climate change and range shifts

A

Range shifts occur due to warmer climates allowing species to move further north

77
Q

Affect of photoperiodism and climate change

A

Warmer temperature favours flowers to bloom earlier and earlier to get a head start on the year

78
Q

Mechanoreceptors

A

Responsible to changes in pressure and are involved in orientation of the body and hearing

79
Q

Describe the process of hearing

A

Pressure waves in the air his the tympanic membrane and travel to the ear drum to which is transmits the signal to the middle ear bones to the stapes and then the oval window which vibrates the fluid in the cochlea that is sensed by the hairs in the ears

80
Q

Choclea

A

set of internal membranes divided into three chambers that house the basilor and tectorial membrane

81
Q

Basilar membrane

A

Long membrane that goes thick to thin and transfers it’s vibration to the tectorial membrane

82
Q

Stereocillia

A

Hairs arranged from smallest to largest, They serve as the key mechanosensors, responding to fluid motion for various functions, including hearing and balance.

83
Q

Kinnocillium

A

Tallest piece of the ear cells and are linked via mechanoreceptor channels that will open when stretched

84
Q

Process of activating the kinnocillium

A

1)Pressure wave moves towards the stereocillia
2)Potassium channels flow with calcium into the cell
3)Calcium triggers the synaptic vesicles to fuse with the plasma membrane
4)Neurotransmitter is released into the afferent neruon

85
Q

What causes hearing loss

A

1)Tiplink breakage
2)Damage to the sterocillia
3)Ribbon synapse damage
4)Damage to the hair cells

86
Q

Cornea

A

Refracts light to the back of the eye

87
Q

Lens

A

Focuses the light to the correct distance of the eye

88
Q

Retina

A

a layer of photoreceptors cells and glial cells within the eye that captures incoming photons and transmits them along neuronal pathways as both electrical and chemical signals for the brain to perceive a visual picture.

89
Q

Fovea

A

a small depression within the neurosensory retina where visual acuity is the highest

90
Q

Three portions of the vertebrate eye

A

1)Photoreceptors respond to light held in place via epithelial cells
2)Bipolar cells transmit signal to ganglion cells
3)Ganglion cells, send the message to the brain via the optic nerve

91
Q

Rods

A

Sensitive to dim light but not colour

92
Q

Cones

A

Less sensitive to faint light but are stimulated by different wavelengths allowing for colour vision

93
Q

Describe how a photon of light activates the eyes

A

1)Rhodopsin is activated when light causes retinal to switch cis to trans
2)Rhodopsin activates Transducin which in turn activates PDE
3)PDE breaks down cGMP into GMP
4)as cGMP concentration decreases cGMP gated sodium channels in the plasma membrane of the the photoreceptors closes
5)Hyper polarization occurs
6)Decrease in neurotransmitters release from photo receptor to bipolar cells
7)New pattern of action potential is sent via ganglion cells

94
Q

G protein amplification of sight

A

1)Rhodopsin activates 800 g-protein
2)Each g protein activates PDE
3)Each PDE catalyzes 6cGMP

95
Q

Cones and their wavelengths

A

Red-Long wavelength
green-Medium wavelengths
blue-short wavelength

96
Q

Signalling in the olfactory glands

A

1)Odarant binds to odor receptor
2)g protien activates splitting into alpah and beta subunits
3)alpha subunit goes to adenyly cyclase3 and ATP is used to produce CAMP
4)cAMP activates the sodium gated and calcium gated channels leading to depolarization
5)Calcium binds to chloride channels
6)Action potential is fired

97
Q

Photo reception vs Olfaction

A

Olfaction:100s of proteins, receptor neurons, gprotien,depolarization,cAMP
Photoreception:3 proteins,epithelial, g protein, hyper polarization, cGMP

98
Q

Glucose sensing in the body

A

1)Glucose increases ATP
2)ATP causes closure of the K channels
3)Depolarization
4)Activation of the Ca2+ channels
5)Calcium triggers release of insulin

99
Q

Ficks law

A

Diffusion of gas dependant on
1)Solubility of gas
2)Temperature
3)Surface area for diffusion
4)Difference in partial pressure
5)Barrier thickness

100
Q

Partial pressure

A

Pressure of a particular gas in a mixture of gas causing the diffusion of gas from high to low pressure

101
Q

5 components of circulation

A

1)Ventilation
2)Diffusion
3)Circulation
4)Diffusion
5)Respiration

102
Q

Pleural cavity

A

thin layer of cells in between the lungs and chest cavity to keep the lungs inflated

103
Q

Negative pressure

A

Used to pull air into the lungs in inhalation vka the increase in area of the lungs

104
Q

Positive pressure

A

Used to push air out of the body with the diaphragm rising up and shrinking the chest cavity

105
Q

CO2 and water reaction

A

CO2+H2O<->H2CO2<->H+ + HCO3-

106
Q

Left shift in oxygen binding

A

Increases O2 affinity, speeds up loading of o2 but slows down o2 unloading, low temp, higher pH

107
Q

Right shift in oxygen binding

A

Decreases O2 affinity, decreases oxygen loading in the lung but increases unloading in the tissues, low pH and high temp

108
Q

Carbonic anhydrase

A

Catalyses the formation of carbonic acid from CO2 and H2O

109
Q

Arteries

A

Tough, thick walled vessels that take blood away from the heart under high pressure

110
Q

Capillaries

A

Thinnest blood vessels allowing exchange of gas and minerals with the tissues

111
Q

Veins

A

thin walled vessels that shuttle returning blood to the heart

112
Q

Aorta

A

Large artery that receives blood from the heat and shuttles it to the arteries

113
Q

Pulmonary circuit

A

the system of transportation that shunts de-oxygenated blood from the heart to the lungs to be re-saturated with oxygen before being dispersed into the systemic circulation.

114
Q

Systemic circuit

A

carries oxygenated blood from the left ventricle, through the arteries, to the capillaries in the tissues of the body

115
Q

Lymphatic system

A

System that runs alongside the circulatory system to collect excess fluid and return it to the primary circuit

116
Q

Blood flow through the heart

A

Blood comes into the right atrium from the body, moves into the right ventricle and is pushed into the pulmonary arteries in the lungs. After picking up oxygen, the blood travels back to the heart through the pulmonary veins into the left atrium, to the left ventricle and out to the body’s tissues through the aorta.

117
Q

Pulmonary circuit path

A

Right atria->right ventricle->Lungs

118
Q

Systemic circuit path

A

Lungs->left atrium->left ventricle->Aorta->Systemic circuit

119
Q

Right atrioventicular valve

A

prevents blood backflow from the right ventricle to the right atrium

120
Q

Pulmonary valve

A

It’s between the lower right heart chamber (right ventricle) and the artery that delivers blood to the lungs (pulmonary artery)

121
Q

Left atrioventricular valve

A

allow blood to flow from your left atrium to your left ventricle. And they prevent backward flow from the left ventricle to the left atrium

122
Q

Aortic valve

A

keeps blood flowing from your heart’s lower left chamber (left ventricle) to the aorta which is the main artery bringing blood from the heart to the body.

123
Q

Specialty of the cardiac tissue

A

1)Gap junctions between cells allowing for electrical continuity
2)Desmosomes to link cells allowing for the same force to be applied

124
Q

Process of cardiac signalling with ions

A

1)Na channels close
2)Ca2+ channels open allowing for plateau
3)Ca2+ closes
4)Re polarization occurs

125
Q

Funny current

A

Immediate rebound of the heartbeat signal due to opening of sodium channels

126
Q

Pace maker cells

A

Cells found in the sinoatrial node that control the heartbeat

127
Q

Signal of a heartbeat

A

1)SA node generates electrical signal
2)Signal from SA node propagating to atria leading to blood being ejected
3)signal is sent to AV node for the ventricles
4)Impulse is send down the bundle of HIS and Purjinke fibers up and down the bottom of the heart
5)Ventricle relaxes

128
Q

Systole phase

A

Contraction phase of atria

129
Q

Dystole phase

A

Relaxed phase of the heart

130
Q

Baroreceptors

A

Detects changes in blood pressure that will trigger signals to the heart to control the rate and force of contraction

131
Q

Three types of nitrogenous waste

A

Uric acid:Low water, high energy, birds and reptiles
Urea:Medium water and energy usage, mammals and amphibians
Amonia: requires excess water to flush, toxic, little energy, bony fish use

132
Q

Functions of the Kidneys

A

1)Electrolyte balance
2)Nitrogenous waste removal
3)pH of blood
4)Blood pressure
5)Hormone production
6)Calcium and potassium homeostasis
7)regulate RBC production

133
Q

Cortical nephron

A

Shorter nephron that does not dip into the medula

134
Q

Juxatamedullary nephron

A

Longer nephron, dips into the medula

135
Q

Route of waste water

A

Glomerulus->Proximal tubule->Loop of Henly->Distal tubule->collecting duct

136
Q

Glomerulus

A

Removes small molecules and large volumes of water using pressure filtration system

137
Q

GFR filtration rate

A

1)Myogenic response
2)Tubleglomerular feedback
3)Mesangial control

138
Q

Myogenic response

A

Stretch recpetros respond to an increase in pressure contracting the muscle to increase pressure or relax it to decrease pressure

139
Q

Tubularglomeular feedback

A

Macula densa regulates the diameter of the bowmans capsule

140
Q

Mesangial control

A

Alters the permiability of the bowmans capsle

141
Q

Proximal tubule

A

Filters out urea,glucose,amino acids, vitamins,electrolytes via microvilli

142
Q

Process of absorption in proximal tubule

A

1)Na+/K+ ATPase in the basolateral membrane removes NA+ in the fluid
2)Na+ is used to co transport other ions
3)Solutes move into the cell then into the blood stream
4)Water follows the ions

143
Q

Loop of Henle

A

Descending limb removes water, thin ascending limb removes cl- and na+ passively and the thick ascending limb removes Cl- and Na+ actively

144
Q

Distal Tubule

A

Regulated via osmotic stress and can help reabsorb more water if necessary

145
Q

Collecting duct

A

Able to withdraw more ions with proper horomones, leads the filtered material out of the kidney

146
Q

Aldosterone

A

Activates sodium pumps in distal tubule

147
Q

Antideuretic hormone

A

Activates the insertion of aquaporins into the apical membrane of the collecting duct and increases its permeability to UREA