The two lines, one vertical and one horizontal, that divide the abdominopelvic area into quadrants cross at the



A) umbilicus/navel.

B) urinary bladder.

C) junction of the small and large intestines.

D) diaphragm.

E) sternum.


A) umbilicus/navel.

Anatomy & Physiology

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A) Leak channels B) Activated channels C) Chemically gated channels D) Voltage-gated channels E) Voltage-gated and chemically gated channels

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Which of the following would NOT be classified as a lymphoid organ?

A) Peyer's patches of the intestine B) pancreas C) spleen D) tonsils

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The structural explanation of how a muscle fiber contracts is called the

A) myosin spiral theory. B) thin filament theory. C) sliding filament theory. D) cross-bridge connection. E) active site rule.

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________ are short-chain fatty acids in which five of the carbon atoms are joined in a ring

A) Cholesterol B) Estrogen C) Testosterone D) Prostaglandins E) Glycolipids

Anatomy & Physiology