Which of the following statements is NOT true?
a. The more complex a foreign molecule the greater its antigenicity.
b. Isolated molecules may act as antigens.
c. Large polysaccharides may act as antigens.
d. T cells reside in colonies.
e. The key to B- and T-cell specificity is the TLRs present in their membrane thatbinds antigens.
E
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This figure shows an anterior view of the spinal cord and meninges. What structure does number 1 indicate?
A. Anterior root B. Posterior root C. Anterior root ganglion D. Posterior root ganglion E. Gray commissure
Which nerve is compressed in carpal tunnel syndrome?
A) ulnar B) radial C) median D) axillary
The cell membrane contains all of the following except ________.
A. secretory vesicle B. cholesterol C. phospholipid D. channels
All of the following happen to the cardiovascular system as a result of aging and hypertension except what?
A. The vessels thicken and become less elastic. B. The heart becomes less efficient due to decreased resting stroke volume which decreases cardiac output. C. Vascular resistance increases with age in individuals with hypertension. D. All of these happen to the cardiovascular system as a result of aging and hypertension.