Deoxygenated blood is returned to the right side of the heart by the:
A) superior and inferior vena cavae
B) pulmonary trunk
C) aorta
D) pulmonary veins
E) pulmonary arteries
Answer: A) superior and inferior vena cavae
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Which of the following structures is labeled A in the diagram?
a) axon terminal b) trigger zone c) cell body d) peripheral process e) dendrites
Your roommate is not a science major but is interested in science and asks you to verify a rumor he has heard: it is theoretically possible for two people to walk through each other without causing harm. Confirm or refute what he has heard, and explain.
What will be an ideal response?
Calcitonin and parathyroid hormone (PTH) have:
A) synergistic actions B) antagonistic actions C) similar actions D) totally unrelated actions
The term pneumothorax refers to accumulation of air in the
A) alveoli B) bronchi C) pericardial space D) pleural space