WCU PHYS 261 FINAL EXAM (ACTUAL
EXAM) WITH QUESTIONS AND CORRECTLY
WELL DEFINED ANSWERS LATEST 2024
ALREADY GRADED A+
What are the primary and second organs of the immune system
and their function? - ANSWERS-Primary organs: red bone
marrow, thymus
-function: production and maturation
Secondary organs: lymph nodes, spleen, tonsils, GALT(gut
associated lymphoid tissue)
-function: maintain mature WBCs that are ready to attack
What are cytokines? - ANSWERS-chemicals released by the
WBCs that affect growth and activity of other WBCs
,What is internal respiration? - ANSWERS-Gas exchange that
occurs between the aleveoli and RBCs, and between the RBCs
and tissue
What are the 2 types of respiration? - ANSWERS-internal
respiration and external respiration
In which direction does air flow due to pressure differences? -
ANSWERS-from a high area to a low area
What is external respiration? - ANSWERS-air movement
between the lungs and the atmosphere
What is inhalation? - ANSWERS-when air moves from the
atmosphere into the lungs
What is exhalation? - ANSWERS-when air moves from the lungs
into the atmosphere
What is Boyle's Law? - ANSWERS-that pressure and volume are
inversely proportional
, What is the atmospheric pressure at sea level? - ANSWERS-760
mmHg
What is intrapulmonary pressure? - ANSWERS-pressure inside
the lungs
What is intrapulmonary volume? - ANSWERS-volume inside the
lungs
What is the atmospheric pressure and intrapulmonary pressure
when you are at rest?(neither inhaling or exhaling) - ANSWERS-
760mmHg
What is the lung volume during rest? - ANSWERS-400ml air
For inspiration, is the intrapulmonary pressure higher or lower
than the atmospheric pressure? - ANSWERS-lower
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