Which of the following primary germ layers develops into the linings of the digestive, respiratory, and urinary organs?

A. Periderm
B. Exoderm
C. Endoderm
D. Ectoderm
E. Mesoderm


Answer: C

Anatomy & Physiology

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The structures that connect cardiac muscle cells are

A) motor end plates. B) intervertebral discs. C) neuromuscular junctions. D) intercalated discs.

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What characteristic differentiates cardiac muscle cells from skeletal muscle cells?

A) striations B) excitability C) sarcoplasmic reticulum D) intercalated discs

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Which type of cell would have an abundance of peroxisomes?

A. White blood cell, a phagocyte B. Liver cells that detoxify hydrogen peroxide C. Cardiac muscle cells (require large amounts of ATP) D. Fibroblast (makes protein fibers) E. Mucus cell (secretes mucus)

Anatomy & Physiology

When baroreceptors sense a drop in blood pressure, the vasomotor center responds by:

A. suppressing cardiac function B. reducing vasomotor tone C. triggering peripheral vasodilation D. triggering peripheral vasoconstriction

Anatomy & Physiology