1
IVY TECH APHY 201 EXAM 1 QUESTIONS WITH
CORRECT ANSWERS
External body surfaces are... - correct-answer -continuous with the external
environment
What are the 6 external body surfaces? - correct-answer -1) Nasal and oral
passages
2) Respiratory tract
3) GI tract
4) Urinary tract
5) Reproductive tract
6) Ducts of exocrine glands
Internal body surfaces can only be accessed... - correct-answer -from an internal
body fluid
or
by transport across an external membrane
, 2
What are the 3 internal body surfaces? - correct-answer -1) Cell membranes of
cells within the body
2) Cardiovascular and lymphatic membranes
3) Serous and connective tissue membranes
Membranes divide the body into compartments that... - correct-answer -maintain
separate chemical environments
What is the external face of the membrane? - correct-answer -the surface facing
the environment outside of the body
What is the apical (or huminal) face of the membrane? - correct-answer -the
surface facing the lumen of a hallow structure
What is the basolateral face of the membrane? - correct-answer -the surface
facing the intestinal environment
What are the 7 fluid compartments of the body? - correct-answer -1) Blood
plasma and lymph
2) Interstitial fluid
, 3
3) Intracellular fluid
4) Fluid in membranous organelles
5) Cerebrospinal fluid
6) Synovial cavities
7) Chambers in eyeballs and ears
Intracellular fluid contains how much of the body's water? - correct-answer -2/3
(28L)
Extracellular fluid contains how much of the body's water? - correct-answer -1/3
(14L)
(3L blood plasma, 11L interstitial fluid)
Filtration - correct-answer -Pressure driven (blood pressure and fluid hydrostatic
pressure)
Diffusion - correct-answer -Driven by concentration gradients
, 4
Osmosis - correct-answer -Driven by concentration gradients of solutes (only
water)
Routes of water loss - correct-answer -1) Evaporation from skin and moist
membranes, sweat (+/- 900mL)
2) Feces (+/- 100mL)
3) Urine (+/- 1.5L)
Routes of water gains - correct-answer -1) Food, beverages (+/- 2.25L)
2) Metabolism (+/- 250mL)
Primary receptors of the thirst mechanism - correct-answer -Hypothalamic
receptor neurons signal the thirst center when blood plasma osmolarity > 280
mOsm
Secondary receptors of the thirst mechanism - correct-answer -Osmoreceptors in
the mouth detect low volume and increase concentration of saliva
Integrating center - correct-answer -Hypothalamic thirst center
IVY TECH APHY 201 EXAM 1 QUESTIONS WITH
CORRECT ANSWERS
External body surfaces are... - correct-answer -continuous with the external
environment
What are the 6 external body surfaces? - correct-answer -1) Nasal and oral
passages
2) Respiratory tract
3) GI tract
4) Urinary tract
5) Reproductive tract
6) Ducts of exocrine glands
Internal body surfaces can only be accessed... - correct-answer -from an internal
body fluid
or
by transport across an external membrane
, 2
What are the 3 internal body surfaces? - correct-answer -1) Cell membranes of
cells within the body
2) Cardiovascular and lymphatic membranes
3) Serous and connective tissue membranes
Membranes divide the body into compartments that... - correct-answer -maintain
separate chemical environments
What is the external face of the membrane? - correct-answer -the surface facing
the environment outside of the body
What is the apical (or huminal) face of the membrane? - correct-answer -the
surface facing the lumen of a hallow structure
What is the basolateral face of the membrane? - correct-answer -the surface
facing the intestinal environment
What are the 7 fluid compartments of the body? - correct-answer -1) Blood
plasma and lymph
2) Interstitial fluid
, 3
3) Intracellular fluid
4) Fluid in membranous organelles
5) Cerebrospinal fluid
6) Synovial cavities
7) Chambers in eyeballs and ears
Intracellular fluid contains how much of the body's water? - correct-answer -2/3
(28L)
Extracellular fluid contains how much of the body's water? - correct-answer -1/3
(14L)
(3L blood plasma, 11L interstitial fluid)
Filtration - correct-answer -Pressure driven (blood pressure and fluid hydrostatic
pressure)
Diffusion - correct-answer -Driven by concentration gradients
, 4
Osmosis - correct-answer -Driven by concentration gradients of solutes (only
water)
Routes of water loss - correct-answer -1) Evaporation from skin and moist
membranes, sweat (+/- 900mL)
2) Feces (+/- 100mL)
3) Urine (+/- 1.5L)
Routes of water gains - correct-answer -1) Food, beverages (+/- 2.25L)
2) Metabolism (+/- 250mL)
Primary receptors of the thirst mechanism - correct-answer -Hypothalamic
receptor neurons signal the thirst center when blood plasma osmolarity > 280
mOsm
Secondary receptors of the thirst mechanism - correct-answer -Osmoreceptors in
the mouth detect low volume and increase concentration of saliva
Integrating center - correct-answer -Hypothalamic thirst center
