A single motor neuron with all the muscle cells it innervates is called a:

a. motor unit
b. neuromuscular junction
c. neurotransmitter
d. both B and C above


a. motor unit

Anatomy & Physiology

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Chronic hypoxia

A) can be caused by anemia. B) increases 2,3-DPG production in blood. C) increases 2,3-DPG production in blood and can result from anemia. D) shifts the HbO 2 dissociation curve to the left. E) All of the answers are correct.

Anatomy & Physiology

Which of the following secrete testosterone?

a. Secondary follicle b. Sertoli cells c. Seminal vesicles d. Leydig cells d. Interstitial endocrinocytes

Anatomy & Physiology

Which is a physiological description rather than an anatomical one?

A. The muscles of the thigh are composed of skeletal muscle tissue. B. The walls of blood capillaries are composed of a thin epithelium. C. There are fenestrations (openings) in the epithelial cells of capillary walls. D. The muscles of the intestinal wall contract slowly and involuntarily. E. The esophageal wall includes a middle layer of dense irregular connective tissue.

Anatomy & Physiology

The formation of organs and organ systems during the embryonic period is called ________.

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

Anatomy & Physiology