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ornobtizzi ornobtizzi
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6 years ago
. What occurs during systole?
  a. Oxygenated blood is pumped to the lungs.
  b. The heart muscle tissues contract.
  c. The atrioventricular valves suddenly open.
  d. Oxygen-poor blood from all body regions except
  the lungs flows into the right atrium.
  e. All of these occur.

Question 2

D shows the entry of the __________ into the
  __________.
  a. superior vena cava; left atrium
  b. inferior vena cava; right atrium
  c. pulmonary arteries; left atrium
  d. pulmonary veins; left atrium
  e. coronary arteries; aorta
Textbook 
Human Biology

Human Biology


Edition: 10th
Authors:
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wrote...
#1
6 years ago
Answer to q. 1

Answer: b

Answer to q. 2

Answer: d
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