Please answer all questions

1		Along with the ________ system, endocrine system hormones coordinate homeostasis.
			A)	muscular
			B)	exocrine
			C)	nervous
			D)	circulatory
2		Hormonal secretion is generally controlled by __________________.
			A)	a negative feedback mechanism
			B)	a positive feedback mechanism
			C)	nervous impulse
			D)	None of these is correct.
3		Antidiuretic hormone (ADH) from the posterior pituitary promotes the reabsorption of ________ in the kidneys.
			A)	water
			B)	salt ions
			C)	calcium
			D)	hydrogen ions
4		The release of oxytocin from the posterior pituitary is regulated by __________.
			A)	a positive feedback mechanism
			B)	the strength of uterine contractions during childbirth
			C)	the frequency of which an infant suckles at the breast
			D)	All of these are correct.
5		Release and release-inhibiting hormones are transported from the hypothalamus to the anterior pituitary by ______.
			A)	nerves
			B)	a portal system
			C)	both A and B
6		Growth hormone (GH) promotes ______.
			A)	skeletal and muscle growth
			B)	protein synthesis
			C)	fat metabolism
			D)	All of these are correct.
7		If ________ is lacking in the diet, the thyroid enlarges, producing a goiter.
			A)	calcium
			B)	phosphate
			C)	iodine
8		The ________ glands lie atop the kidneys.
			A)	pituitary
			B)	growth
			C)	adrenal
			D)	thyroid
9		The adrenal medulla secretes __________.
			A)	male sex hormones
			B)	glucocorticoids
			C)	mineralocorticoids
			D)	epinephrine and norepinephrine
10		Cortisol is a ______ and as such, helps to regulate energy metabolism.
			A)	sex hormone
			B)	glucocorticoid
			C)	mineralocorticoid
11		The primary target organ of aldosterone is ______ where it regulates sodium and potassium balance.
			A)	the liver
			B)	the pancreas
			C)	the kidneys
			D)	all of the above
12		Low levels of adrenal cortex hormones result in ______.
			A)	Addison disease
			B)	Cushing syndrome
			C)	both A and B
13		Insulin functions to ________.
			A)	promote the storage of nutrients
			B)	lower blood glucose
			C)	Both A and B are correct.
14		In __________, the pancreas is not producing insulin.
			A)	type I diabetes
			B)	type II diabetes
			C)	diabetes insipidus
15		The ________ are the male sex hormones.
			A)	estrogens
			B)	progesterones
			C)	androgens
			D)	A and B
16		The thymus aids the differentiation of ________.
			A)	blood
			B)	T lymphocytes
			C)	basophils
			D)	B lymphocytes
17		The ________ gland produces the hormone melatonin.
			A)	adrenal
			B)	thyroid
			C)	pituitary
			D)	pineal
18		There are _____ categories of growth factors that stimulate cell division.
			A)	three
			B)	four
			C)	five
			D)	six
19		The second messenger that sets the enzyme cascade in motion after reception of a peptide hormone is called ______.
			A)	ATP
			B)	peptide hormone
			C)	cAMP (cyclic AMP)