What factor causes the production of red blood cells?

A. Erythropoietin
B. Thrombopoietin
C. Colony-stimulating factors
D. A low number of circulating RBCs


Answer: A

Anatomy & Physiology

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Which of the following is not true of elastic filaments?

A. They are composed of titin. B. They run through the core of thin filaments. C. They attach to Z discs. D. They prevent overstretching of muscle fibers. E. They help to stabilize thick filaments.

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The skin is ________ to the bones.

A. superficial B. medial C. inferior D. deep

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Blood flows continuously through all capillaries

Indicate whether the statement is true or false

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Vitamin C is a

A. fat-soluble, nonessential vitamin. B. water-soluble, nonessential vitamin. C. fat-soluble, essential vitamin. D. water-soluble, essential vitamin.

Anatomy & Physiology