The pitch of a vocal sound is controlled by changing the

A) force of the air passing over the vocal cords.
B) tension on the vocal cords.
C) shape of the laryngeal cartilages.
D) size of the laryngeal cartilages.


B

Anatomy & Physiology

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The abbreviation used for "twice a day" is ________.

A. q.i.d. B. t.i.d. C. prn D. b.i.d.

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The inheritance of sickle cell anemia involves incomplete dominance. (S determines normal hemoglobin, it is dominant; s is the sickle cell gene). A homozygous recessive person has sickle cell anemia. A heterozygous person has the sickle cell trait. If

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Triceps brachii and biceps brachii perform opposing actions and are classified as:

A) antagonists. B) agonists. C) synergists. D) prime movers.

Anatomy & Physiology