Your professor says something profoundly funny. You are tempted to laugh but because you failed to brush your teeth this morning all you can do is to manage a closed-mouth smile. What muscle are you primarily using?

A. Levator labii superioris
B. Buccinator
C. Platysma
D. Risorius
E. Mentalis


Answer: D

Anatomy & Physiology

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A reduced number of leukocytes causes a serious disorder called ____________

Fill in the blank with correct word.

Anatomy & Physiology

Peptides and catecholamines are hydrophilic and cannot penetrate a target cell. they therefore bind to receptors where?

a) on the DNA b) on the cytoskeleton c) in the nucleus d) on the cell surface

Anatomy & Physiology

Growth due to increased cell size is called ________.

hypertrophy hyperplasia atrophy Dystrophy

Anatomy & Physiology

The term "flagellum" is appropriate for the structure it represents because it means

A. the center. B. a whip. C. a nut or kernel. D. a bench. E. an eyelid.

Anatomy & Physiology