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Ivy Tech APHY 201 Exam 1 Questions and
Correct Answers/ Latest Update / Already
Graded
What are the 6 external body surfaces?
Ans: 1) Nasal and oral passages
2) Respiratory tract
3) GI tract
4) Urinary tract
5) Reproductive tract
6) Ducts of exocrine glands
What are the 3 internal body surfaces?
Ans: 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...
Ans: maintain separate chemical environments
What is the apical (or huminal) face of the membrane?
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Ans: the surface facing the lumen of a hallow structure
What is the basolateral face of the membrane?
Ans: the surface facing the intestinal environment
What are the 7 fluid compartments of the body?
Ans: 1) Blood plasma and lymph
2) Interstitial fluid
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?
Ans: 2/3 (28L)
Extracellular fluid contains how much of the body's water?
Ans: 1/3 (14L)
(3L blood plasma, 11L interstitial fluid)
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Filtration
Ans: Pressure driven (blood pressure and fluid hydrostatic
pressure)
Diffusion
Ans: Driven by concentration gradients
Osmosis
Ans: Driven by concentration gradients of solutes (only water)
Renal response
Ans: Cannot fix dehydration; only reduces water loss
(reduces filtrate formation and increases water absorption from
the urine)
Homeostasis
Ans: The ability of the body to maintain optimal performance
of a system under a given set of conditions
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When conditions of homeostasis change...
Ans: homeostatic set points change to maintain the optimal
performance of the system
Feedback loops
Ans: Systems that allow communication between cells to
maintain a physiological system within a given range of
function
Elements of feedback loops (4)
Ans: 1) Physical or chemical stimulus
2) Receptors
3) Chemical or electrical signal
4) Target Cells
Physical or Chemical Stimulus
Ans: Some component of the internal or external environment
that is monitored for changes
Receptors
All rights reserved © 2025/ 2026 |
Ivy Tech APHY 201 Exam 1 Questions and
Correct Answers/ Latest Update / Already
Graded
What are the 6 external body surfaces?
Ans: 1) Nasal and oral passages
2) Respiratory tract
3) GI tract
4) Urinary tract
5) Reproductive tract
6) Ducts of exocrine glands
What are the 3 internal body surfaces?
Ans: 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...
Ans: maintain separate chemical environments
What is the apical (or huminal) face of the membrane?
All rights reserved © 2025/ 2026 |
, Page |2
Ans: the surface facing the lumen of a hallow structure
What is the basolateral face of the membrane?
Ans: the surface facing the intestinal environment
What are the 7 fluid compartments of the body?
Ans: 1) Blood plasma and lymph
2) Interstitial fluid
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?
Ans: 2/3 (28L)
Extracellular fluid contains how much of the body's water?
Ans: 1/3 (14L)
(3L blood plasma, 11L interstitial fluid)
All rights reserved © 2025/ 2026 |
, Page |3
Filtration
Ans: Pressure driven (blood pressure and fluid hydrostatic
pressure)
Diffusion
Ans: Driven by concentration gradients
Osmosis
Ans: Driven by concentration gradients of solutes (only water)
Renal response
Ans: Cannot fix dehydration; only reduces water loss
(reduces filtrate formation and increases water absorption from
the urine)
Homeostasis
Ans: The ability of the body to maintain optimal performance
of a system under a given set of conditions
All rights reserved © 2025/ 2026 |
, Page |4
When conditions of homeostasis change...
Ans: homeostatic set points change to maintain the optimal
performance of the system
Feedback loops
Ans: Systems that allow communication between cells to
maintain a physiological system within a given range of
function
Elements of feedback loops (4)
Ans: 1) Physical or chemical stimulus
2) Receptors
3) Chemical or electrical signal
4) Target Cells
Physical or Chemical Stimulus
Ans: Some component of the internal or external environment
that is monitored for changes
Receptors
All rights reserved © 2025/ 2026 |
