The primary motor cortex
a. is located in the parietal lobes
b. in the left cerebral hemisphere controls skeletal muscles on the right side of the body
c. is the only region of the brain involved with motor control
d. receives motor input from the spinal cord
e. exhibits all of the above
B
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Which tumor originates in blood-forming tissues in the red bone marrow?
A. Sarcoma B. Leukemia C. Lymphoma D. Carcinoma
Urine concentration and volume depend on water reabsorption in the
A. proximal convoluted tubule. B. descending loop of Henle. C. ascending loop of Henle. D. distal convoluted tubule only. E. distal convoluted tubule and collecting ducts.
Thick skin
A. is determined by the thickness of the dermis. B. is found covering most of the body. C. has three different epidermal strata. D. has fewer layers of cells in the stratum corneum than thin skin. E. is found in areas subject to pressure or friction, such as the palms.
Which of the following is an example of catabolism?
A. The increase in muscle tissue with exercise B. The breakdown of glucose in the cytoplasm and mitochondria C. The assembly of the cell membrane from precursor molecules D. The formation of secretory proteins in the pancreas