The epithalamus controls day and night cycles through the secretion of the hormone
A) acetylcholine.
B) melatonin.
C) thyroid hormone.
D) DHEA.
E) oxytocin.
B) melatonin.
You might also like to view...
Which of the following statements concerning epithelial tissue is false?
A. Columnar epithelial cells promote diffusion. B. Secretory epithelial cells are usually cuboidal or columnar in shape. C. Cuboidal epithelium is found in areas where absorption occurs. D. Stratified epithelium is adapted for a protective role. E. The movement of materials through epithelium is enhanced by simple squamous epithelium.
PTH is secreted in a regulated manner. Which of the following directly increases PTH synthesis and/or secretion?
A. elevated 1,25-dihydroxyvitamin D B. decreased blood phosphate levels (hypophosphatemia) C. decreased blood Ca++ levels (hypocalcemia) D. elevated blood K+ levels (hyperkalemia) E. elevated Mg++ levels (hypermagnesemia)
The region of the sarcomere containing the thick filaments is the
A) Z line. B) M line. C) H band. D) A band. E) I band.
A point of convergence for several muscles of the lower face is the __________.
A. retinaculum B. aponeurotica C. modiolus D. nuchal line E. galea