Ivy Tech APHY 201 Exam 1 Verified Questions And Answers Graded A+

Ivy Tech APHY 201 Exam 1 Verified Questions And Answers Graded A+
External body surfaces are... - ANSWER continuous with the external
environment
What are the 6 external body surfaces? - 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... - ANSWER from an internal
body fluid
or
by transport across an external membrane
What are the 3 internal body surfaces? - 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... - ANSWER maintain
separate chemical environments
Ivy Tech APHY 201 Exam 1 Verified Questions And Answers
Graded A+
What is the external face of the membrane? - ANSWER the surface facing the
environment outside of the body
What is the apical (or huminal) face of the membrane? - ANSWER the surface
facing the lumen of a hallow structure
What is the basolateral face of the membrane? - ANSWER the surface facing
the intestinal environment
What are the 7 fluid compartments of the body? - ANSWER 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? - ANSWER 2/3
(28L)
Extracellular fluid contains how much of the body's water? - ANSWER 1/3
(14L)
(3L blood plasma, 11L interstitial fluid)
Filtration - ANSWER Pressure driven (blood pressure and fluid hydrostatic
pressure)
Diffusion - ANSWER Driven by concentration gradients
Ivy Tech APHY 201 Exam 1 Verified Questions And Answers
Graded A+
Osmosis - ANSWER Driven by concentration gradients of solutes (only water)
Routes of water loss - ANSWER 1) Evaporation from skin and moist
membranes, sweat (+/- 900mL)
2) Feces (+/- 100mL)
3) Urine (+/- 1.5L)
Routes of water gains - ANSWER 1) Food, beverages (+/- 2.25L)
2) Metabolism (+/- 250mL)
Primary receptors of the thirst mechanism - ANSWER Hypothalamic receptor
neurons signal the thirst center when blood plasma osmolarity > 280 mOsm
Secondary receptors of the thirst mechanism - ANSWER Osmoreceptors in
the mouth detect low volume and increase concentration of saliva
Integrating center - ANSWER Hypothalamic thirst center
Stimulation of the thirst center causes... - ANSWER 1) Stimulation of
water-seeking behaviors through the cerebral cortex
2) Increased water conservation by the kidneys, through ADH from the
posterior pituitary

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