Ivy Tech APHY 201 Exam 1 Questions with Correct Answers

Ivy Tech APHY 201 Exam 1 Questions with Correct Answers


Question 1:
What are the 6 external body surfaces?
Answer:
....1) Nasal and oral passages


Question 2:
6) Ducts of exocrine glands
What are the 3 internal body surfaces?
Answer:
....1) Cell membranes of cells within the body


Question 3:
3) Serous and connective tissue membranes Membranes divide the body into compartments
that...
Answer:
....maintain separate chemical environments


Question 4:
What is the apical (or huminal) face of the membrane?
Answer:
....the surface facing the lumen of a hallow structure


Question 5:
What is the basolateral face of the membrane?
Answer:
....the surface facing the intestinal environment


Question 6:
What are the 7 fluid compartments of the body?
Answer:
....1) Blood plasma and lymph

,Question 7:
7) Chambers in eyeballs and ears
Intracellular fluid contains how much of the body's water?
Answer:
....2/3 (28L)


Question 8:
Extracellular fluid contains how much of the body's water?
Answer:
....1/3 (14L) (3L
blood plasma, 11L interstitial fluid)


Question 9:
Filtration
Answer:
....Pressure driven (blood pressure and fluid hydrostatic pressure)


Question 10:
Diffusion
Answer:
....Driven by concentration gradients


Question 11:
Osmosis
Answer:
....Driven by concentration gradients of solutes (only water)


Question 12:
Renal response
Answer:
....Cannot fix dehydration; only reduces water loss (reduces
filtrate formation and increases water absorption from the urine)

,Question 13:
Homeostasis
Answer:
....The ability of the body to maintain optimal performance of a system under a given set of
conditions


Question 14:
When conditions of homeostasis change...
Answer:
....homeostatic set points change to maintain the optimal performance of the system


Question 15:
Feedback loops
Answer:
....Systems that allow communication between cells to maintain a physiological system within a
given range of function


Question 16:
Elements of feedback loops (4)
Answer:
....1) Physical or chemical stimulus


Question 17:
4) Target Cells
Physical or Chemical Stimulus
Answer:
....Some component of the internal or external environment that is monitored for changes


Question 18:
Receptors
Answer:
....Structures that monitor the external or internal environment for changes in specific stimuli

, Question 19:
Chemical or Electrical Signal
Answer:
....A secreted chemical or electrical potential that allows cells to communicate information abot
changes in stimuli with other cells


Question 20:
Target Cells
Answer:
....Cells that receive the signal sent by other cells. Usually involved in producing the appropriate
response.


Question 21:
Examples of chemical properties
Answer:
....Size, weight, number of protons or electrons, solubility in water, electrical charge


Question 22:
Atom
Answer:
....The smallest particle of any element


Question 23:
Proton
Answer:
....Subatomic particle with one positive charge and mass of 1 amu (located in the nucleus)


Question 24:
Neutron
Answer:
....Subatomic particle with no charge and mass of 1 amu (located in the nucleus)


Question 25:
Electron
Answer:
....A subatomic particle with a negative electric charge (located in orbitals around the nucleus)