The two regions of gray matter within the cerebrum are the cerebral cortex and the basal nuclei
Indicate whether the statement is true or false
T
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Which of the following structures is NOT produced from the mesoderm?
a) Melanocytes b) All skeletal muscle c) All cardiac muscle d) Blood vessels e) Lymphatic tissue
Which of the following exemplifies the antagonistic effects of the two divisions of the ANS?
A. Blood clotting B. Blood flow to skeletal muscles C. Sweating D. Erection of the hair E. Intestinal motility
Which statement about the rate of diffusion through a lipid bilayer membrane is incorrect?
a. Smaller substances diffuse faster than larger substances. b. Lipid-soluble items diffuse faster than water-soluble items. c. Items diffuse through narrow membranes faster than through thick membranes. d. The presence of microvilli decreases the rate of diffusion. e. A greater concentration gradient causes faster diffusion.
Urea is
A. completely reabsorbed by the nephron. B. diffuse out of the collecting ducts into the interstitial fluid of the medulla and then diffuse into the descending loop of Henle. C. secreted into the filtrate by cells of the distal convoluted tubule. D. actively transported into the filtrate by cells of the collecting duct. E. None of the choices are correct.