Where is dystrophin, the protein that is defective in muscular dystrophy, normally found?

A. As a transmembrane protein of the sarcolemma
B. In the Z discs of skeletal and cardiac muscle
C. Between the outermost myofilaments and the sarcolemma of a muscle fiber
D. Bridging the gap between the sarcolemma and axon terminal
E. In the dense bodies of smooth muscle


Answer: C

Anatomy & Physiology

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The ____________________ is the principal site for metabolic interconversions of nutrient molecules

Fill in the blank(s) with correct word

Anatomy & Physiology

________ glands (such as tear glands) have vesicles that release their secretion via exocytosis. ________ glands (such as oil-producing glands) secrete a mixture of disintegrated cells and their products.

A. Endocrine; Exocrine B. Exocrine; Apocrine C. Mucous; Cutaneous D. Mucous; Serous E. Merocrine; Holocrine

Anatomy & Physiology

Polysynaptic reflexes may produce more complicated responses than monosynaptic reflexes because the former involve more than one ________.

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

Anatomy & Physiology

During the peak of the action potential which ion has the greatest permeability?

a. sodium. b. potassium. c. calcium. d. chloride. e. protein.

Anatomy & Physiology