If your differential white blood cell count showed that you had 10% lymphocytes, what could you conclude?
A. That your lymphocytes are in the normal range
B. That you most likely have tuberculosis
C. That you most likely have a parasitic worm infection
D. That you have a deficiency of lymphocytes, or that another type of white blood cell is elevated
E. That you have an excess of lymphocytes
Answer: D
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T cells achieve immunocompetence in the ________
A) spleen B) bloodstream C) liver D) thymus E) bone marrow
The intestinal phase of gastric secretion
A. only stimulates gastric secretion. B. will decrease gastric secretion when gastrin is released by the duodenum. C. leads to increased gastric secretion if duodenal pH falls below 2. D. is controlled by the entrance of alkaline material into the small intestines. E. is controlled by the entrance of acidic chyme into the duodenum.
The assembly of flat saclike cisternae where compounds to be secreted by the cell are collected and concentrated is called the ____
a. mitochondrion b. smooth ER c. Golgi apparatus d. lysosome
Pitch refers to the ________ of sound waves; pitch is determined by the tension produced by ________ laryngeal muscles.
A. loudness; intrinsic B. frequency; extrinsic C. loudness; extrinsic D. frequency; intrinsic