In skeletal muscle cells, calcium initiates contraction by binding to:

A. tropomyosin.
B. actin.
C. troponin.
D. myosin.
E. the thick filament.


C

Anatomy & Physiology

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In order to maintain cellular homeostasis, one abundant type of exchange pump ejects ________ ions from the cell and imports ________ ions

A) potassium; calcium B) sodium; calcium C) potassium; sodium D) sodium; potassium E) calcium; sodium

Anatomy & Physiology

Abduction takes place around which axis?

A. anteroposterior B. mediolateral C. longitudinal D. horizontal

Anatomy & Physiology

The drug Chantix®, which treats nicotine addiction, is an ________ for the nicotine receptor.

A) agonist B) antagonist

Anatomy & Physiology

Which of the following tissues fills internal spaces and provides structural support?

A) connective tissue B) muscle tissue C) epithelial tissue D) bone tissue E) nervous tissue

Anatomy & Physiology