Which muscle is part of the urogenital diaphragm and constricts the urethra to voluntarily inhibit urination?

A. External urethral sphincter
B. Bulbospongiosus
C. Superficial transverse perineal muscle
D. Ischiocavernosus
E. Pubococcygeus


Answer: A

Anatomy & Physiology

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Denervated muscle fibers become progressively smaller and their content of actin and myosin decreases

Indicate whether the statement is true or false

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The radiocarpal joint is a(n) ________ joint

A) saddle B) immovable C) hinge D) plane E) condylar

Anatomy & Physiology

Which of the following is a likely effect of an aging ANS?

A. Decreased emotions B. Slowed somatic reflexes C. Decreased lacrimal secretions and dry eyes D. Decreased sensitivity to pain from the skin, muscles, or joints

Anatomy & Physiology

Which of the following is NOT one of the factors that make the sexuality of blacks somewhat different from that of whites?

A. The African heritage B. The influences of the Judeo-Christian tradition C. The current economic and social conditions D. The gender roles in African-American society epitomized in the concepts of machismo and marianismo

Anatomy & Physiology