What do the coronary arteries arise from?

A. The proximal end of the aorta
B. The venae cavae
C. The interventricular arteries
D. The myocardium
E. The coronary sulcus


Answer: A

Anatomy & Physiology

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Complement helps kill harmful cells by:

a. “drilling” a hole in the cell membrane b. causing sodium to rapidly leak out of the cell c. causing water to rapidly leak out of the cell d. all of the above

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Which of the following is not a key factor in skin breakdown during immobility:

A) poor circulation B) polycythemia C) inadequate subcutaneous tissue D) inadequate nutrition

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What do vellus hairs lack?

A) cortex B) pigment C) keratin D) cuticle

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Skin wrinkles with age because

A) collagen degrades in the subcutaneous layer as the epidermis shrinks. B) the number of sweat glands diminishes. C) fat is lost from the subcutaneous layer and the dermis shrinks. D) epidermal cells undergo a burst of cell division.

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