Which problem is related to untreated diabetes mellitus?
A) damage to the retina
B) neuropathy
C) gastric ulcers
D) goiter
E) retinal problems and nerve problems
E
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The myogenic mechanism for autoregulation of vascular smooth muscle tone:
A. requires the release of nitric oxide from endothelial cells B. involves the release of norepinephrine from sympathetic nerve endings C. responds to changes in vessel wall transmural pressure D. depends upon changes in flow through the vessel E. arises from changes in shear stress in the vessel wall
Why do people who have a heart attack often experience pain radiating along the left shoulder and arm?
A. Nociceptors from the cardiac and shoulder regions all send afferent signals through the vagus nerve. B. Nociceptors from the cardiac and shoulder regions all send afferent signals through the phrenic nerve. C. Lack of blood to the left shoulder and arm result in ischemia and stimulates nociceptors in those regions. D. Signals from the cardiac and shoulder region converge and follow the same pathway to the cortex. E. Signals from nociceptors in the heart diverge and stimulate pain sensations in a large region.
A victim of a shark attack bleeds to death within minutes. Which vessel did the shark's teeth probably sever?
A. Abdominal aorta B. Femoral artery C. Great saphenous vein D. Subclavian artery E. Radial artery
The large hole located in the base of the occipital bone that allows the spinal cord and brain to connect is the ________
A) occipital condyle B) vertebral foramen C) intervertebral foramen D) foramen magnum