Harriet had liposuction several years ago, but has since gained back all the weight lost through the procedure. She does not understand her weight gain because adipocytes are incapable of dividing. Provide a plausible explanation
While it is true that adipocytes do not divide and the number of fat cells in peripheral tissues is limited, mesenchymal cells can divide and give rise to cells that differentiate into fat cells. Thus, areolar connective tissue can become adipose tissue in times of nutritional excess. Along with this, the fat cells that remain after surgery can enlarge by storing more triglyceride if the patient continues to overeat.
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Neurons of the supra-optic and paraventricular nuclei of the hypothalamus manufacture
A) CRF and GnRH.
B) TSH and FSH.
C) ADH and oxytocin.
D) FSH and PRL.
E) GHIH and GHRH.
The onset of puberty is signaled by
A. a growth spurt. B. emotional upheaval. C. attainment of full adult stature. D. the ability to obtain a drivers license. E. a halt to growth.
When you get sunburn after a day at the beach, which of the following membranes have you damaged?
A) serous B) cutaneous C) peritoneal D) synovial E) pleural
The senses of equilibrium and hearing are provided by receptors in the ___________.
A) membranous endolymph. B) organ of Schlemm. C) Organ of Corti. D) bony labyrinth. E) perilymph