Exam 6 A&P I Portage

Two reasons why a woman with low levels of LH would not be able to be- come pregnant is 1) be- cause LH stimulates the ovaries to ovulate and 2) LH stimulates proges- terone, which is a key hormone in the mainte- nance of pregnancy. Prog- esterone promotes fertil- ization of an egg for a po- tential pregnancy. Yes, there would be es- trogen in a male's blood- stream, because all males and female produce all the sex hormones, just in dif- ferent ratios. The adren- al glands will produce the "opposite" sex hormone that the testes would pro- duce (testosterone). Positive feedback is a mechanism that increases Explain two reasons why a woman with low levels of LH would not be able to become pregnant. *Would you expect a male to have estrogen in their bloodstream? Explain why or why not. the output of that specif- ic hormone when stimulat- ed. An example of a hor- mone that works through positive feedback is oxy- tocin. Oxytocin is secreted during childbirth and it en- hances the effect of con- tractions of the uterus dur- ing labor. Once the baby is born, the contractions stop and oxytocin is no longer produced. *Peptide hormones B. is produced by the ante- rior pituitary gland Explain the concept of pos- itive feedback. Give an example of a hor- mone that works through positive feedback. This type of hormone is de- rived from proteins: *Peptide hormones *Catecholamines *Steroid hormones *Tyrosine Growth hormone A. is most active during adulthood. B. is produced by the ante- *Hypothalamus MSH - melanocyte stimu- lating hormone Neurosecretory cells are a part of what endocrine or- gan? *Thalamus *Pituitary *Cerebellum *Hypothalamus Which hormone produc- tion is increased with sun- light? *MSH -melanocyte stimu- lating hormone *Melatonin *Cortisol *GH -Growth hormone The posterior pituitary stores these two hor- mones: *ADH and Oxytocin ADH TSH ACTH *ADH and LH *ADH and Oxytocin *LH and FSH *TSH and Prolactin List the hormone(s) that best describes the state- ment below: I promote the reabsorption of water at the collecting ducts of the kidneys. List the hormone(s) that best describes the state- ment below: I am secreted by the pitu- itary to stimulate the thy- roid. List the hormone(s) that best describes the state- ment below: I am secreted by the pi- tuitary and stimulate the adrenal cortex. FSH or LH (gonadotropic hormones) Calcitonin Insulin Glucagon List the hormone(s) that best describes the state- ment below: I am secreted by the p