Each of the following is a physical barrier to infection except
A) body hair.
B) epithelium.
C) secretions.
D) complement.
E) basement membranes.
Ans: D) complement.
Anatomy & Physiology
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The main function of tonsils is to detect and protect against infections agents that are
A. in the blood. B. in the lymph. C. ingested or inhaled. D. secreted by salivary glands.
Anatomy & Physiology
Where are spermatozoa stored until they are fully mature?
A. Ductus deferens B. Rete testis C. Efferent ductules D. Epididymis E. Seminiferous tubules
Anatomy & Physiology
In the pancreas, insulin is secreted by ____ cells
a. alpha b. beta c. chief d. oxyphil
Anatomy & Physiology
Which of the following is not a wave on an ECG?
A. R B. Q C. U D. P
Anatomy & Physiology