Variations in hair color arise from differing amounts of ________.

A. keratin and melanin
B. eumelanin and pheomelanin
C. carotene and hemoglobin
D. carotene and collagen
E. collagen and elastic filaments


Answer: B

Anatomy & Physiology

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Answer the following statement(s) true (T) or false (F)

a muscle described as having a direct attachment is attached to the bone via a tendon or aponeurosis.

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Which vessels play an important role in preventing edema?

a. arteries. b. arterioles. c. capillaries. d. veins. e. lymph vessels.

Anatomy & Physiology

The two vertebral arteries fuse to form a large artery, the

A) circle of Willis. B) common carotid artery. C) external carotid artery. D) internal carotid artery. E) basilar artery.

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Which skull bone articulates with the first vertebra?

a. temporal b. occipital c. sphenoid d. ethmoid

Anatomy & Physiology