A primary way by which T3 increases oxygen consumption and causes heat to be generated (metabolic thermogenesis) in most cells in the body is through increasing the levels of:
A. myosin heavy chain ?
B. GLUT4
C. uncoupling proteins
D. NADP oxidase
E. epithelial sodium channel (ENaC)
ANS: C
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Which of the choices below is the salt level-monitoring part of the nephron?
A) macula densa B) principal cell C) vasa recta D) loop of Henle
Which of the following statements concerning testosterone is true?
A. It prevents hair loss in pattern baldness. B. It promotes atrophy of the larynx. C. It can lead to an increase in muscle mass. D. It causes the skin and hair to soften. E. It decreases metabolic rate in males.
Whole muscle tension depends on all of the following except
a. number of muscle fibers contracting b. tension produced by each contracting fiber c. extent of motor-unit recruitment d. frequency of stimulation e. the proportion of each motor unit used at any given time
Reabsorption and active transport occur in the convoluted tubules of the nephron, whereas filtration occurs in the glomerular capsule of the renal corpuscle. Predict what cellular structure will be more abundant in tubule cells as compared to capsule
cells. A) Mitochondria B) RER C) Golgi apparatus D) Lysosomes