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Zoology, 5/e

Stephen A. Miller, College of the Ozarks
John B. Harley, Eastern Kentucky University

Communication II: The Endocrine System and Chemical Messengers

On-line Quizzing


1	Chemical messengers are involved in
		A)	communication.
		B)	maintaining homeostasis in an animal's body.
		C)	the body's response to various stimuli.
		D)	all of the above (a-c).


2	Which of the following is not a major endocrine gland in vertebrates?
		A)	hypothalamus
		B)	pituitary
		C)	thyroid
		D)	placenta


3	Those chemicals that are released to the exterior of one animal and affect the behavior of another animal are called
		A)	neurotransmitters.
		B)	local chemical messengers.
		C)	pheromones.
		D)	hormones.


4	Which of the following is not a type of hormone?
		A)	carbohydrates
		B)	polypeptides
		C)	amines
		D)	steroids


5	The fixed-membrane receptor mechanism for hormone action involves hormones that are
		A)	proteins and amines.
		B)	carbohydrates and steroids.
		C)	steroids and polypeptides.
		D)	carbohydrates and polypeptides.


6	The mobile-receptor mechanism for hormone action involves hormones that are
		A)	steroids.
		B)	carbohydrates.
		C)	polypeptides.
		D)	amines.


7	Hormones in flatworms affect
		A)	water balance.
		B)	reproduction.
		C)	regeneration.
		D)	more than one answer is correct.


8	With respect to invertebrates, which of the following has the most advanced endocrine system?
		A)	echinoderms
		B)	arthropods
		C)	annelids
		D)	molluscs


9	Frog metamorphosis is regulated by a hormone from the
		A)	thyroid.
		B)	kidney.
		C)	adrenal.
		D)	pineal.


10	In vertebrates, chromaffin tissue is associated with the
		A)	brain.
		B)	adrenal glands.
		C)	reproductive system.
		D)	digestive system.


11	Which of the following is not produced by the anterior lobe of the pituitary gland?
		A)	STH
		B)	ACTH
		C)	FSH
		D)	MSH


12	Which of the following is not produced by the hypothalamus?
		A)	TSH
		B)	CRH
		C)	PIF
		D)	calcitonin


13	Epinephrine or adrenaline is produced by the __________ gland(s).
		A)	adrenal
		B)	pituitary
		C)	thyroid
		D)	parathyroid


14	Which of the following glands diminishes in size as a vertebrate ages?
		A)	pituitary
		B)	pineal
		C)	hypothalamus
		D)	thymus


15	All of the following are hormones of the digestive tract except
		A)	CCK.
		B)	gastrin.
		C)	secretin.
		D)	atriopeptin.


16	In vertebrates, the primary endocrine control center is found in the
		A)	hypothalamus.
		B)	pineal.
		C)	both hypothalamus and pineal.
		D)	adrenal glands.


17	The kidneys produce the hormone
		A)	erythropoetin.
		B)	gastrin.
		C)	secretin.
		D)	hCG.


18	Hormones modify the biochemical activity of a target cell or tissue.
		A)	True
		B)	False


19	A hormone is a specialized chemical messenger that an endocrine gland or tissue produces and secretes.
		A)	True
		B)	False


20	The pancreas produces several hormones that help regulate reproductive functions.
		A)	True
		B)	False


21	The adrenal medulla is under control by the brain via sympathetic nerves.
		A)	True
		B)	False


22	Zoologists know more about the endocrine system of invertebrates that of any other animal group.
		A)	True
		B)	False


23	Jawed fishes and primitive tetrapods have ultimobranchial glands.
		A)	True
		B)	False


24	In insects, hormones play a major role in growth, maturation, and reproduction.
		A)	True
		B)	False


25	Classical endocrine glands have been identified in nematodes.
		A)	True
		B)	False

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