A myelin sheath is composed primarily of __________.

A. lipids
B. carbohydrates
C. glycoproteins
D. proteins
E. polysaccharides


A. lipids

Anatomy & Physiology

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Which condition is associated with a paralysis of facial muscles on one side of the face that often disappears spontaneously after three to five weeks?

A. Tic douloureux B. Bell palsy C. Meningitis D. A stroke E. Aphasia

Anatomy & Physiology

Viagra is a drug used to treat erectile dysfunction by dilating arteries in the penis. The

neurotransmitter that Viagra affects is A) nitric oxide. B) acetylcholine. C) serotonin. D) histamine.

Anatomy & Physiology

The ________ is a bone that forms in the quadriceps tendon of the knee.

Fill in the blank(s) with the appropriate word(s).

Anatomy & Physiology

Where in the body are hematopoietic stem cells found?

A. Red bone marrow B. Spleen C. Liver D. Yellow bone marrow E. Thymus

Anatomy & Physiology