Enzymes secreted by the small intestine include ________.
A. secretin
B. histamine
C. bile
D. disaccharidases
E. cholecystokinin
Answer: D
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Air entering the potential space of the pleural cavity is called
A) pulmonary ventilation. B) pneumothorax. C) internal respiration. D) pneumonia.
Where is the thymus located?
A) posterior mediastinum, lateral to the spinal cord B) anterior mediastinum, posterior to the sternum C) along the curving lateral border of the stomach, extending between the 9th and 11th ribs on the left side D) posterior superior wall of the nasopharynx E) inferior to the diaphragm, medial to the liver
Which of the following is true regarding the function of the parasympathetic nervous system?
A. Carries messages for everyday body maintenance functions B. Prepares the body for fight or flight C. Decreases blood flow to digestive organs D. Dilates blood vessels
How does the avascular cornea acquire oxygen?
A. Oxygen diffuses from the atmosphere to the cornea. B. The ciliary body provides oxygen to the cornea. C. Oxygen diffuses from the capillaries in the iris to the cornea. D. Lysozyme in tears releases oxygen to nourish the cornea.