What is the purpose of segmental contractions of the small intestine?

A. Propelling the chyme forward
B. Stretching the intestinal wall
C. Moving intestinal contents into the colon
D. Mixing of intestinal contents


Answer: D

Anatomy & Physiology

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Why does rigor mortis result in muscular rigidity after death?

A. The enzyme that hydrolyzes ATP is no longer being produced; therefore, the myosin heads will not receive the actin filament. B. The ATP necessary to bind to the myosin head and release the cross bridge is no longer present. C. ATP production is no longer possible; therefore, cross bridges cannot be formed. D. A buildup of intracellular calcium keeps the troponin molecule free of the active site on actin.

Anatomy & Physiology

The type of voltage-gated channel that possesses an inactivation gate that temporarily closes after the channel is active is the

A. voltage-gated potassium channel. B. voltage-gated chloride channel. C. voltage-gated sodium channel. D. voltage-gated calcium channel.

Anatomy & Physiology

Which term means lying on the back, face upward?

A. Supine B. Prone C. Distal D. Cephalad E. Dorsal

Anatomy & Physiology

Endocrine responses occur more slowly and last longer than neural responses

Indicate whether the statement is true or false

Anatomy & Physiology