________ is caused by the presence of an extra chromosome (trisomy 21) in a person's cells.

A. Cryptorchidism
B. Benign prostatic hyperplasia
C. Down syndrome
D. Hydrocele


Answer: C

Anatomy & Physiology

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a. lobes b. hemispheres c. adjacent gyri d. thalamus to cerebrum

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The synovial membrane

A. is a double layer of tissue that encloses a joint. B. is a thin lubricating film covering the surface of a joint. C. provides a smooth surface where bones meet. D. is a layer of tissue that is continuous with the periosteum. E. lines the joint everywhere except over the articular cartilage.

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Which of the following is NOT a tonsil?

A. Lingual B. Palatine C. Pharyngeal D. Oral

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Which of the following is not a mechanical barrier against microorganisms?

A) Urine B) Tears C) Diarrhea D) Saliva

Anatomy & Physiology