In the sympathetic nervous system, where are the preganglionic neurons located?
A) cervical and sacral segments of the spinal cord
B) sacral segments of the spinal cord
C) brain stem
D) thoracic and lumbar segments of the spinal cord
E) cerebellum
D
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The last third portion of the large intestine, including the rectum, receives blood from the
A) inferior mesenteric artery. B) superior mesenteric artery. C) celiac trunk. D) left gastric artery. E) lumbar artery.
Which of the following drugs has as its basic purpose to reduce the work of breathing, increase the oxygen content of the blood, and reduce the work of the heart?
A) Oxygen B) Antivirals C) Insulin D) Antibiotics
Which of the following statements regarding control of respiration is correct?
A. A slight decrease in arterial PO2 is a stronger stimulus for increased ventilation than is a comparable decrease in arterial PCO2. B. The most important signal for regulating ventilation is the H+ concentration of arterial blood. C. Increased concentrations of lactic acid stimulate ventilation primarily by acting on peripheral chemoreceptors. D. An increase in the HCO3- concentration in blood stimulates ventilation. E. At high altitude, a decrease in PCO2 of the blood stimulates an increase in ventilation.
____________________ is a sticky semifluid material found between the nucleus and the cell membrane.?
Fill in the blank(s) with correct word