Which one of the following is NOT a mechanism that aids lymph return to the heart?
A) milking action of skeletal muscles
B) pressure changes within the thorax
C) the pumping action of the heart
D) smooth muscle contractions within the lymphatic vessels
E) presence of valves within the larger lymph vessels
C
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A premature infant often is able to survive if born in the
A) first trimester. B) few days prior to the expected due date. C) second trimester. D) third trimester. E) None of the answers are correct.
Which of the following is NOT felt within an abdominal palpation?
a. feces c. mass b. pregnancy d. all of the above are palpable
The blind spot
a. is the point on the retina at which the optic nerve leaves and blood vessels pass through b. contains special photoreceptors that make only melanospin, which is not used for vision c. is in the exact center of the retina d. exhibits all of the above e. exhibits only a and c
Altering the volume of the lungs can change intra-alveolar pressure, in accordance with __________ law
Fill in the blank(s) with correct word