Which type of intercellular connection facilitates the passage of electrical signals between cardiocytes and enables a coordinated heart beat?

A. Tuxedo junctions
B. Gap junctions
C. Tight junctions
D. Desmosomes
E. J junctions


Answer: B

Anatomy & Physiology

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Taste buds on the tongue are often associated with epithelial projections called

A) macula. B) lingual papillae. C) ganglion cells. D) pharyngeal papillae. E) ampulla.

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Which of the following groups of elements accounts for more than 95% of the human body by weight?

A. Calcium, hydrogen, oxygen, nitrogen B. Carbon, hydrogen, oxygen, nitrogen C. Carbon, phosphorus, oxygen, hydrogen D. Calcium, phosphorus, hydrogen, nitrogen

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Once they have developed surface receptors for a particular antigen, lymphocytes are said to be what?

A. Capped B. Self-tolerant C. Sensitized D. Immunoefficient E. Immunocompetent

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Differences between a young child's skeleton and that of a small adult include which of the following?

A) There is a large mastoid process in the child skeleton. B) The external auditory meatus is larger in the child. C) In the child's skeleton a frontal suture is present. D) The child skeleton has full dentition. E) All of the answers are correct.

Anatomy & Physiology