Ch 1: Human Physiology control of the "Internal Environment" Flashcards

S:22

1
Q

______ : study of the mechanisms behind biological functions

A

physiology

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2
Q

___ are the basic units of life

A

cells

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3
Q

____ are muscle cells

A

myocytes

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4
Q

___ are bone cells

A

osteocytes

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5
Q

___ are RBC

A

erythrocytes

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6
Q

cells require ____ and ____ to sustain life

A

oxygen

energy yeilding nutrients

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7
Q

Cells remove _____ and other waste products

A

CO2

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8
Q

_____ is a biochem mechanism to convert nutrients to nrg

A

Metabolism

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9
Q

_____ is the ability to reproduce new cells from older cells

A

replication

neuro cells dont really divide

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10
Q

cells that have similar fxn are grouped into ____

A

primary tissues

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11
Q

what are the 4 classifications of primary tissues

A
  1. muscle
  2. nervous
  3. epithelial
  4. CT
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12
Q

_____ tissue specializes in communication within the body

A

nervous

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13
Q

____ tissue specializes for forming membranes and glands

A

epithelial

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14
Q

_____ tissue speciallizes in providing nutrients, structure and support

A

CT

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15
Q

What are the 3 types of muscle tissue

A

skeletal
cardiac
smooth

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16
Q

What are the two types of nervous tissue

A

Neurons

glia : non-neural cells. They form myelin and support neural tissue

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17
Q

What are the 3 types of epithelial membranes

A

squamous
columnar
cuboidal

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18
Q

What are the two types of glands that are formed by epithelial tissues

A

endocrine

exocrine

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19
Q

Organs are composed of :

A

two or more primary tissues

prim tiss- cells that have similar fxn

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20
Q

______ are organs that are located in different regions of the body and perform related fxn

A

systems

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21
Q

How is homeostasis structurally and functionally made possible?

A

by having highly organized systems that can communicate with each other through specialized pathways

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22
Q

60% of the body is made of ____

A

aqueous solution

23
Q

there is __ communication btw the intra/extracellular compartments

A

selective

24
Q

______ regulates the molecules and ions across the membrane

A

transport mechanisms

25
Q

phosopholipids are hydro____

A

hydrophobic

26
Q

cell survival is dependent on ____ fluid

A

extracellular fluid

27
Q

____ carry waste products in the blood

A

ions and bicarbonate

28
Q

___ & ____ ions are found in the extracellular fluid

A

Na+ Cl - (O2)

29
Q

Where is glucose, fatty acids and amino acids found ?

A

nutrients are found in the extracellular fluid

30
Q

_____ ions are found in the intracellular fluid

A

K and phosphates (ATP, ADP, CrP)

31
Q

always have to maintain a ____ for things to happen in the cell

A

charge

32
Q

______: the spaces btw cells that make up the internal enviro

A

interstitial space

33
Q

____ is the part of blood that actually contains genetic material

A

plasma

34
Q

In capillaries there is an exchange btw circulating blood and ____

A

interstitual spaces

35
Q

____________________________ allows the cells to have access to essential components and for waste to be carried away in the blood

A

The transport of materials from the blood into the interstitual space

36
Q

Where would you expect to find the heaviest concentration of toxins?

A

interstitual space

37
Q

____ is required for metabolizing glucose and free fatty acids

A

O2

38
Q

____ &____ are needed to make ATP

A

glucose and free fatty acids

have to have O2 to metabolize these

39
Q

_____ in the extracellular fluid must be maintained in constant concetration so cells ahve access when intracellular rxn need it

A

O2

40
Q

____ is what carries O2 in the blood

A

hemoglobin (Hb)

also regulates O2 concentration

41
Q

____ regulates O2 concentration in the EXTRAcellular fluid

A

Hemoglobin

also carries O2

42
Q

If O2 concentration is high, Hb _____

A

does not release it

43
Q

If O2 concentration is low, Hb ____

A

releases it

44
Q

_______: When O2 concentration is high Hb holds on to it. When O2 contrention is low Hb releases it

A

O2 buffering fxn of hemoglobin

45
Q

_____ is an end product of oxidative rxn in the cell

A

CO2

46
Q

high concentrations of CO2 in the tiss fluid causes _____

A

NRG rxn to cease = cell death

47
Q

A higher than normal CO2 concentration excited______

A

the respiratory center - makes the person breath FASTER and DEEPER

48
Q

What are the 2 CN that are directly involved with regulating CO2 and BP

A

glossopharyngeal (IX)

Vagus

49
Q

____ are chemoreceptors in the throat that detect changes of blood flowing through it

  • what 4 factors can be detected?
A

cartoid body

changes in O2, Co2 , Ph, temp

50
Q

Carotid bodys are afferent chemoreceptors innervated by _____ N

A

glossopharyngeal N (IX)

51
Q

Glossopharyngeal N receive GVA fibers from _____ chemoreceptors

A

carotid body

52
Q

Glossopharyngeal N affect the______ which are located in blood vessels and detect stretching of the vessel

A

baroreceptors

53
Q

baroreceptors afferent are innervated by _____N

A

glossopharyngeal

54
Q

_____ innervates the cardiac plexus

A

vagus