Coordination In Human

Question 1

Effects of Adrenaline horomone

Answer 1

Increase heart rate
More blood to muscle
Fof More oxygen and glucose to muscle
For More aerobic respiration , for more energy
Breath rate increase for more oxygen
Blood glucose level increase
Pupil dialted to see better

Question 2

Stimliu

Answer 2

Change In environment

Question 3

Receptor

Answer 3

Specialized cells that detect change in environment

Question 4

Effector

Answer 4

Part of the body that produces the response

Question 5

Example of nerves

Answer 5

Central nervous system
Perephrial nervously system

Question 6

Example of cns

Answer 6

Brain and spinal cord

Question 7

Function of sensory neuron

Answer 7

Transmit electric impluses from receptor to cns (brain and spinal cord)

Question 8

Function of relay

Answer 8

Transmitted electrical impulse from sensory to motor through synpase

Question 9

Function of motor

Answer 9

Transmit nerve impluse from cns to muscle and glands

Question 10

Coordinated response require

Answer 10

Sitmulus
Receptor
Effector

Question 11

Types of receptors

Answer 11

Light
Touch and heat
Chemical
Sound

Question 12

What mean transducers

Answer 12

Change one form of energy to another

Question 13

Synapse

Answer 13

Gap between 2 neurons

Question 14

Say mechanism of transmission of nerve impluse across synapse

Answer 14

Impluse arrive down axon of 1 neuron
Impluse stimulates the release of neurotransmitter
Neurotransmitter diffuse across synaptic gap
Neurotransmitter attach to receptor on membrane of second neuron intating another electrical impluse

Question 15

What mean reflex action

Answer 15

Involuntary rapid response to stimulus which often protect body

Question 16

What is meant by coordination

Answer 16

Organisms are able to respond to changes in environment for survival

Question 17

Corena

Answer 17

Refract light

Question 18

Pupil

Answer 18

Allow light in eye

Question 19

Iris

Answer 19

Change size of pupil and control amount of light enter eye

Question 20

Susponsry ligament and ciliary muscle

Answer 20

Change shape of lens and shape in accomidation

Question 21

Retina

Answer 21

Light receptor
has rods and cons
Detect light

Question 22

Optic nerve

Answer 22

Transmit nerve impluse from retina to brain

Question 23

Fovea

Answer 23

Point of cleanest vision and most cons

Question 24

Scelera

Answer 24

Protect eye

Question 25

Choroid

Answer 25

Dark pigment prevent reflection of light rays inside the eye

Question 26

What happen if blood water content low

Answer 26

1.hypothulmus in osmoreceptor detect this 2.hypothulums sitmulate putitary gland secrete adh 3.increase permeability of collecting duct 4.more water reabsorption 5.volume of urine decrease, concentration increase 6.controlled by negative feedback

Question 27

What happen of blood water content high

Answer 27

1.hylothulmus in osmoreceptor detect this 2.no stimulation of pituitary gland 3.no secretion of adh 4.so collecting collecting duct reabsorbed less water from glomerular filterate to blood 5.more water lost in urine(diluted) 6.controlled by negativefeedback

Question 28

What happen in skin at hot weather

Answer 28

1.vasodilation of skin artioles 2.more blood flow to surface of skin 3.blood loses heat by radiation 4.sweat gland produce sweat 5.sweat evaporates 6.cool down body

Question 29

What happen to skin in cold weather

Answer 29

1.vasoconstriction of skin arteioles 2.less blood flow to surface of skin 3.less heat loss 4.hair erector muscle contract, hair erect ,trap air,air insluator 5.muscle shiver and release heat

Question 30

Thermoregulation

Answer 30

Control of internal body temperature

Question 31

What happen to pupil in bright light

Answer 31

Circular muscle contract Radial muscle relax Pupil become smaller

Question 32

What happen to pupil in dim light

Answer 32

Circulars muscle relax Radial muscle contract Pupil become larger

Question 33

Cons proprties

Answer 33

Colour Clear Near Light

Question 34

Rods

Answer 34

Dark Black and white Far object

Question 35

Accommodation reflex of near objects

Answer 35

Ciliary muscle contract Susponsry ligament loose Lens fat and more round and convex and more light refraction

Question 36

Accomidation reflex of far object

Answer 36

Ciliary muscle relax Susponsry ligament tight Lens thin and less round and less convex Less light refraction

Question 37

What are the two hormones that control blood glucose level

Answer 37

Insulin and glucagon

Question 38

What happen when glucose increase in blood

Answer 38

Insulin released,so glucose decrease and get back to normal,as glucose break down to glycogen in liver

Question 39

What happen when glucose in blood decrease

Answer 39

Glycagon released and break down glycogen (liver) to glucose in So b.g.l increase and get to normal

Question 40

Reflex action arrangment

Answer 40

Stimulus then receptor then sesory then relay (cns) then motor then effector(muscle and gland)

Question 41

Example of effector

Answer 41

Muscle Gland

Question 42

Simillteries between nervous and hormonal communication

Answer 42

Chemical involved Require stimuli,recepetor, effector

Question 43

Difference between nervous and hormonal communication

Answer 43

Nervous transmit in neuron but hormonal transport in blood nervous faster and shorter than hormonal Nervous has electrical impluses but hormonal is chemical

Question 44

What is meant by endocrine gland

Answer 44

Gland secrete hormone or hormones directly into blood plasma (pancreas,adrenalgland...)

Question 45

What is meant hormone

Answer 45

Chemical that usually a protein secreted by an endocrine gland transported dissolved in plasma work on specific target organ

Question 46

Suggest why cells don't store glucose

Answer 46

As it's soluble Osmotic effect

Question 47

Explain how reflex arc protect body

Answer 47

Prevent damage of body ad it's fast response

Question 48

Explain how a reduction in the number of white blood cells can affect risk of infection

Answer 48

Increase risk of infection By not killing bacteria and engulf Less antibodies and antigen

Question 49

Explain why red blood cells would be damaged if the water content of the blood increased

Answer 49

Water enters from diluted to concentrated by osmosis, burst as no cell wall

Question 50

Suggest how detached retina could affect vision

Answer 50

Blindness No connection to optic nerve

Question 51

What is meant by homeostasis

Answer 51

Control the internal environment

Question 52

What is meant by osmoregulation

Answer 52

Control concentration of blood

Question 53

Name the sense that uses receptor cells in retina

Answer 53

Vision

Question 54

Suggest how amd affect vision

Answer 54

Blindness Loss of detail