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1
The endocrine system secretes __________ that are released into the bloodstream to effect target cells.
A)hormones
B)neurotransmitters
C)prions
D)enzymes
2
The gland(s) that produce steroid hormones include the __________.
A)adrenal cortex
B)ovaries
C)testes
D)All of the above.
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
_______ can result from a lack of iodine in the diet.
A)Acromegaly
B)Grave's disease
C)Addison's disease
D)Goiter
5
In the pancreas, insulin functions to ________.
A)promote cellular glucose uptake
B)promote cellular glycogen synthesis
C)decrease blood glucose level
D)All of the above.
6
Hormonal secretion is generally controlled by __________________.
A)a negative feedback mechanism
B)a positive feedback mechanism
C)a nervous impulse
D)None of these are correct.
7
The gland(s) that produce steroid hormones include the __________.
A)adrenal cortex
B)ovaries
C)testes
D)All of the above.
8
Many animals produce _______ that are used as a means of chemical communications, to mark territory, and to attract a mate.
A)peptides
B)pheromones
C)messengers
D)neurotransmitters
9
The ______ controls the glandular secretions of the pituitary gland.
A)thalamus
B)pineal gland
C)adrenal gland
D)hypothalamus
10
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.
11
Epinephrine and norepinephrine are produced by the:
A)anterior pituitary
B)adrenal cortex
C)adrenal medulla
D)posterior pituitary
12
___________ may result when too much growth hormone is produced later in childhood or as an adult.
A)Dwarfism
B)Gigantism
C)Acromegaly
D)Cushing's syndrome
13
______ is a hormone produced by the anterior pituitary that causes the mammary glands in the breasts to develop and produce milk.
A)ACTH
B)ADH
C)Prolactin
D)MSH
14
The thyroid gland releases the following:
A)thyroxine
B)triiodothyronine
C)calcitonin
D)All of the choices are correct.
15
Glucocorticoids such as cortisol and mineralocorticoids such as aldosterone are produced by the:
A)parathyroid
B)adrenal cortex
C)adrenal medulla
D)thymus
16
Parathyroid hormone triggers:
A)an increase in stored calcium.
B)an increase in blood calcium.
C)an increase in thyroid hormones.
D)a decrease in phosphorus in bone.
17
The ________ glands lie atop the kidneys.
A)pituitary
B)growth
C)adrenal
D)thyroid
18
Cortisol is a _____ and as such, helps to regulate energy metabolism.
A)sex hormone
B)glucocorticoid
C)mineralocorticoid
D)releasing hormone
19
In __________, the pancreas is not producing insulin.
A)type I diabetes
B)type II diabetes
C)diabetes insipidus
D)cushing syndrome
20
The thymus aids the differentiation of ________.
A)blood
B)T lymphocytes
C)basophils
D)B lymphocytes





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