Which of the following is a major hormonal event at the onset of puberty?
A) The hypothalamus decreases its production of GnRH.
B) Circulating levels of FSH decrease rapidly.
C) Ovarian cells become less sensitive to FSH.
D) Testicular cells become less sensitive to LH and FSH.
E) Pituitary gland cells become more sensitive to GnRH.
E) Pituitary gland cells become more sensitive to GnRH.
You might also like to view...
Formation of a keloid is a result of underproduction of connective tissue
Indicate whether the statement is true or false.
The filtration barrier in the renal corpuscle consists of which three layers?
A) filtration slits, foot processes, and slit pores B) fenestrations, matrix, and foot processes C) fenestrated endothelium of glomerulus, basement membrane of glomerulus, and podocyte filtration slits D) basement membrane of glomerulus, foot processes, and capsular outer layer E) podocyte filtration slits, matrix cells in the glomerulus, and extraglomerular mesangial cells
Which of the following is NOT a type of glial cell found in the central nervous system?
a. oligodendrocytes b. astrocytes c. Schwann cells d. ependymal cells e. microglia
The least numerous but the largest of the papillae are arranged as a V-shape on the posterior dorsal surface of the tongue. They contain the majority of taste buds and are called ________ papillae.
A. papiform B. filiform C. foliate D. vallate E. fungiform