A nerve impulse travels fastest along ________ axons of ________ diameter.

A. unmyelinated; large
B. myelinated; small
C. unmyelinated; small
D. myelinated; large
E. None of the choices; axon diameter does not affect impulse conduction.


Answer: D

Anatomy & Physiology

You might also like to view...

Which of the following is not accomplished by antibodies?

a. neutralization of bacterial toxins b. direct destruction of foreign cells c. activation of the complement system d. enhancement of phagocytosis e. stimulation of killer (K) cells

Anatomy & Physiology

At rest, the tropomyosin molecule is held in place by

A) actin molecules. B) myosin molecules. C) troponin molecules. D) ATP molecules. E) calcium ions.

Anatomy & Physiology

Which of the following statements about the duodenum is not true?

A. It is longer than the jejunum. B. It receives bile from the liver. C. It receives chyme from the stomach. D. It contains a brush border. E. It receives secretions from the pancreas.

Anatomy & Physiology

Thin yellowish milk secretion is a sign of ________________________________________ mastitis

Fill in the blank(s) with correct word

Anatomy & Physiology