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Which of the following is NOT a regulatory function of the endocrine system?


A) Rate of metabolism
B) Ion regulation
C) Blood glucose levels
D) Muscle contraction

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What is the major hormone secreted by the testes?


A) Gonadotropic hormone
B) Testosterone
C) Estrogen
D) Progesterone

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Hormones act as amplitude-modulated signals, which means that the strength of the signal depends on


A) The frequency of the action potential
B) The concentration of the chemical
C) How long the chemical is released
D) None of the choices is correct

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All of the following are actions that result in an increase in blood insulin levels except


A) Increased secretion of hormones associated with digestion
B) Increased blood glucose levels
C) Increased epinephrine levels
D) Increased parasympathetic stimulation of the acini of the pancreas

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Which method of secretion control is being employed when high blood calcium levels cause the secretion of calcitonin?


A) Nervous system
B) Blood levels of chemicals
C) Enzymes
D) Other hormones

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As blood calcium levels increase,


A) Parathyroid hormone is released
B) Calcitonin is released
C) Vitamin D is released
D) Calcitonin released is inhibited

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Cortisol helps to reduce inflammation and increases the body's immune responses.

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Secretion of melatonin is linked to daylight and darkness.

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Progesterone and estrogen are produced by the


A) Uterus
B) Ovaries
C) Vagina
D) Breasts

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Which of the following is(are) the function(s) of oxytocin?


A) Causes contraction of uterine muscles
B) Initiates the production of milk
C) Causes the let-down of milk
D) Both A and B are correct
E) Both A and C are correct

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The nervous system and endocrine systems are completely separate from each other.

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Which of the following is NOT a role related to parathyroid hormone function?


A) Increases action of osteoclasts in bone to release calcium into the blood
B) Increases the reabsorption of calcium in the kidneys to reduce calcium loss in urine
C) Increases the formation a active vitamin C to increase calcium absorption in the intestines
D) All of the choices are correct

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