The neural tissue of the body contains approximately ________ glial cells.

Fill in the blank(s) with the appropriate word(s).


100 billion

Anatomy & Physiology

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In smooth muscle, where does the calcium needed for contraction come from?

A. The sarcoplasmic reticulum B. Mitochondria C. Intercalated discs D. The motor nerve fiber E. The extracellular fluid

Anatomy & Physiology

Sweat glands can also secrete ________, which stimulates vasodilation of skin arterioles to help reduce body temperature.

A. nitric oxide B. adenosine C. prostaglandin E2 D. bradykinin

Anatomy & Physiology

The direction from which a sound is coming can be determined by the

A. volume of the sound. B. frequency of sound waves. C. amplitude of the sound waves. D. differences in the time that sound waves take to reach each ear. E. timbre of sounds.

Anatomy & Physiology

Which of the following is accomplished by the brain stem?

a. voluntary initiation of movement. b. control of breathing, circulation, and digestion. c. final sensory perception. d. language ability. e. personality traits.

Anatomy & Physiology