Signs of menopause include
A) shrinking of the vagina, uterus, and breasts.
B) increased bone matrix.
C) increased concentrations of estrogens.
D) inexplicable euphoria, extra energy, weight loss.
A
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Which is NOT a transport mechanism typically seen in renal tubular epithelial cells?
A. Transport proteins that move glucose by facilitated diffusion from inside of proximal tubule cells into the renal interstitial fluid B. Na+-K+ ATPase pumps in the luminal membrane of proximal tubule epithelial cells that move Na+ from inside the cell into the tubule and K+ from the tubule lumen into the cell C. Countertransport proteins that move Na+ into proximal tubule epithelial cells while moving H+ from the cells into the lumen D. Ion channels that allow Na+ to move by diffusion from the lumen of the proximal tubule into epithelial cells E. Cotransport proteins in the luminal membrane of the proximal tubule that move Na+ and glucose from the proximal tubule into epithelial cells
In 1848, a railroad worker named Phineas Gage was seriously injured during an explosion on the job
A tapered metal rod ranging from 0.25 inches to 1.25 inches in diameter and over 3 feet long entered his skull just under his left cheek bone and exited through the top of his skull. The rod was found over twenty feet away. Amazingly, Gage lived even though he suffered massive damage to the left front of his brain. His personality and intellectual abilities changed, however. Before the accident, he was respected as a smart, capable and even-tempered man. After the accident, he was foul-mouthed and bad-tempered and could not make up his mind. In the years immediately preceding his death, he began to have epileptic seizures. Explain the changes observed in Mr. Gage based on your knowledge of the brain. What will be an ideal response
An important mechanism that controls metabolic pathways under physiological
conditions is A) negative feedback. B) genetic control. C) signal transduction. D) positive feedback.
These are the smallest blood vessels in our body.
A. Venules B. Arterioles C. Capillaries D. Venous sinuses