The external ear ends at the
A) vestibule.
B) cochlea.
C) ossicles.
D) tympanic membrane.
E) pinna.
Answer: D
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A) Estrogen B) Adrenaline C) Dopamine D) Insulin
Salt balance in humans
a. depends primarily upon control of Na+ intake through salt hunger b. depends primarily upon control of Na+ output by the kidneys c. is poorly regulated d. depends upon Na+ secretion by the kidneys e. is not affected by aldosterone secretion
Which of the following is the fluid portion of blood?
a. Interstitial. b. Intracellular. c. Plasma. d. Hemoglobin.
Which immune disorder is characterized as an inability of the immune system to distinguish between its own tissues and foreign tissue or cells?
A. Immunodeficiency disorders B. Hypersensitivities C. Autoimmune disorders D. Anaphylaxis