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

Anatomy & Physiology

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Which of the following structures is labeled A in the diagram?

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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?

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Calcitonin and parathyroid hormone (PTH) have:

A) synergistic actions B) antagonistic actions C) similar actions D) totally unrelated actions

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The term pneumothorax refers to accumulation of air in the

A) alveoli B) bronchi C) pericardial space D) pleural space

Anatomy & Physiology