Describe the composition of the intervertebral discs.
What will be an ideal response?
Intervertebral discs are composed of an inner semifluid nucleus pulposus, which gives the discs elasticity and compressibility, and a covering of fibrocartilage, the anulus fibrosus, which limits expansion and holds successive vertebrae together.
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Which of the following is true about blood plasma?
A) It is the same as serum but without the clotting proteins. B) The main protein component is hemoglobin. C) It is about 90% water. D) It contains about 20 dissolved components.
Answer the following statements true (T) or false (F)
1. Thermoregulatory responses to increased heat are mediated by the sympathetic nervous division. 2. Most disorders of the autonomic nervous system reflect abnormalities of smooth muscle control. 3. Alpha-adrenergic effects are usually stimulatory and mediatory. 4. The adrenal medulla is considered a "misplaced" sympathetic ganglion by some. 5. Acetylcholine is the substance released by the axonal endings of the somatic efferent fibers and by the parasympathetic nerve fiber endings.
Activation of a CD4+ cell requires an APC to present antigen with
A. a B cell receptor. B. MHC class II protein. C. MHC class I protein. D. CD8 protein.
Which part of the pleural membrane is not in direct contact with the lungs?
A. Peritoneum B. Pleura C. Parietal D. Visceral