Which of the following statements concerning red blood cells is false?
A) Red cells are biconcave discs.
B) Red cells lack mitochondria.
C) Red cells are about 18 µm in diameter.
D) Red cells are specialized for carrying oxygen.
E) Red cells can form stacks called rouleaux.
Answer: C
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The symptoms of constipation (e.g., abdominal discomfort, headache, and nausea) are due to which of the following?
a. inhibition of gastric emptying. b. absorption of toxins of bacterial origin from the colon. c. prolonged distention of the large intestine by the fecal mass. d. exhaustion due to frequent straining movements in an effort to initiate the defecation reflex. e. the accumulation of large amounts of fluid in the colon.
Glycosaminoglycans (GAGs) are polysaccharides.
Answer the following statement true (T) or false (F)
Which of the following correctly lists the meninges in order from deep to superficial?
A) pia mater, arachnoid mater, and dura mater B) arachnoid mater, dura mater, and pia mater C) dura mater, pia mater, and arachnoid mater D) dura mater, subarachnoid space, and pia mater
The hypothalamus regulates the ________
A) pineal gland B) pituitary gland C) pons D) thalamus