Please answer all questions

1			Hormones
			A)	are secreted into the blood.
			B)	are all derived from cholesterol.
			C)	all bind to receptors activating G-proteins.
			D)	are produced by exocrine glands.
2			Which of the following is not derived from cholesterol?
			A)	Epinephrine.
			B)	Estradiol.
			C)	Melatonin.
			D)	Thyroxine.
3			Hormones stimulating the anterior pituitary gland are secreted by the
			A)	adrenal cortex.
			B)	heart.
			C)	hypothalamus.
			D)	pineal gland.
4			Hormones that have synergistic effects
			A)	have the same effect on target organs.
			B)	are both required for activation of target organs.
			C)	have opposing effects.
			D)	are always additive.
5			Which of the following is not true regarding steroid hormone action?
			A)	These hormones alter the transcription of specific genes.
			B)	The receptor is located within the cell.
			C)	The receptor forms a trimer which binds to the DNA.
			D)	Hormone-response elements are recognized by DNA-binding domains of the occupied receptor.
6			Hormones using cyclic AMP as a second messenger
			A)	activate phospholipase.
			B)	stimulate increased intracellular Ca2+ concentrations.
			C)	usually undergo autophosphorylation.
			D)	activate protein kinase.
7			Inhibiting the activities of phosphodiesterase would
			A)	increase the effect of hormones using Ca2+ as a second messenger.
			B)	increase the effect of hormones using cyclic AMP as a second messenger.
			C)	decrease the effect of hormones activating phospholipase C.
			D)	decrease the ability of G-proteins to activate adenylate cyclase.
8			Which hormone secreted by the pituitary gland is involved in uterine contraction during labor?
			A)	ADH.
			B)	ACTH.
			C)	GH.
			D)	Oxytocin.
9			The release of which of the following hormones is controlled primarily by the release of an inhibiting hormone?
			A)	Estradiol.
			B)	LH.
			C)	Prolactin.
			D)	Thyroxine.
10			Which of the following is true regarding the hypothalamus-pituitary-gonad axis?
			A)	GnRH stimulates LH release from the anterior pituitary gland.
			B)	GnRH stimulates the release of testosterone from the testes.
			C)	FSH stimulates the release of GnRH from the hypothalamus.
			D)	None of the above are true.
11			Damage to the zona glomerulosa would
			A)	decrease the production of corticosterone.
			B)	decrease the production of cortisol.
			C)	decrease the production of DHEA.
			D)	decrease the production of aldosterone.
12			Which of the following would be true of an individual suffering from endemic goiter?
			A)	Excessively low amounts of TSH would be found in the blood.
			B)	Excessively high amounts of TRH would be released from the hypothalamus.
			C)	Autoantibodies similar to TSH would be found in circulation.
			D)	Their metabolic rate would be elevated.
13			Ablation (destruction) of the beta cells of the pancreas would result in
			A)	elevated plasma calcium concentrations.
			B)	elevated metabolic rate.
			C)	elevated plasma glucose concentrations.
			D)	elevated plasma osmolarity.
14			Which of the following is associated with generating and maintaining circadian rhythms?
			A)	The suprachiasmatic nucleus.
			B)	The supraoptic nucleus.
			C)	The paraventricular nucleus.
			D)	None of the above.
15			Which of the following would oppose the actions of prostaglandin E2?
			A)	Leukotrienes.
			B)	Prostaglandin I2.
			C)	Prostaglandin F2.
			D)	Thromboxane A2.