MHC class II molecules are found on ________.
A. B cells, C cells, and D cells
B. neutrophils, monocytes, and macrophages
C. B cells, macrophages, and dendritic cells
D. dendritic cells, B cells, and helper T cells
E. monocytes, helper T cells, and neutrophils
Answer: C
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The chemosensitive area of the brain is located in the ________.
A. cerebral peduncles B. medulla oblongata C. cerebellum D. hypothalamus E. pons
If someone begins to hyperventilate due to anxiety, the CO2 concentration in their blood decreases; this causes ________ in blood pH.
A. a decrease B. no change C. an increase
Which of the following statements concerning the lungs and the pleura is true?
A. The space between the visceral and parietal pleurae is called the mediastinum. B. The pleural membranes adhere, but cannot slide past each other. C. The pleural fluid assists in gas exchange. D. Each lung is suspended in a separate pleural cavity. E. Parietal pleura covers the surface of each lung.
If the body is sliced so the result is a top and bottom portion, this is referred to as the:
A) transverse plane. B) cross section. C) midsagittal plane. D) body's midline.