Question 1

Why do you suppose there is only one hormone produced by the intermediate lobe of the anterior pituitary?

Accepted Answer

The intermediate lobe of the anterior pi

Question 2

Calcium levels in the blood and bone are controlled by

Accepted Answer

A)  1,25-dihydroxyvitamin D. 
B)  parathyroid hormone. 
C)  calcitonin. 
D)  All of the above control calcium level. 
E)  None of the choices are correct. 
A)  1,25-dihydroxyvitamin D. 
B)  parathyroid hormone. 
C)  calcitonin. 
D)  All of the above control calcium level. 
E)  None of the choices are correct.

Question 3

Steroid hormones diffuse directly into target cells where,after combining with nuclear receptors,they act on specific genes to cause an increase or decrease in _____________________ synthesis.

Accepted Answer

The answer of Steroid hormones diffuse directly into target cells...

Question 4

If you are interested in developing a "pesticide" hormone spray that will prevent insects from developing into adult pests,you would need to synthesize

Accepted Answer

A)  a chemical that inhibits the corpora allata. 
B)  the hormone created by the prothoracic gland. 
C)  juvenile hormone. 
D)  PTTH. 
E)  ecdysone. 
A)  a chemical that inhibits the corpora allata. 
B)  the hormone created by the prothoracic gland. 
C)  juvenile hormone. 
D)  PTTH. 
E)  ecdysone.

Question 5

Compare the functions of neurotransmitters with those of parahormones.

Accepted Answer

Neurotransmitters and parahormones both

Question 6

The pancreas produces two hormones that regulate sugar metabolism by antagonistic action:

Accepted Answer

A)  Insulin and glucagon 
B)  Insulin and diabetogenic hormone 
C)  Estrogen and insulin 
D)  Insulin and cortisone 
E)  Epinephrine and norepinephrine 
A)  Insulin and glucagon 
B)  Insulin and diabetogenic hormone 
C)  Estrogen and insulin 
D)  Insulin and cortisone 
E)  Epinephrine and norepinephrine

Question 7

What hormone stimulates the production of insulin-like growth factor or somatomedin by the liver in humans?

Accepted Answer

A)  Antidiuretic hormone 
B)  Thyroid stimulating hormone 
C)  Gonadotropic hormones 
D)  Adrenocorticotropic hormone 
E)  Growth hormone (somatotropin) 
A)  Antidiuretic hormone 
B)  Thyroid stimulating hormone 
C)  Gonadotropic hormones 
D)  Adrenocorticotropic hormone 
E)  Growth hormone (somatotropin)

Question 8

Early in the menstrual cycle of human females,the blood levels of ______ ______ hormone and luteinizing hormone begin to rise slowly,prompting the ovarian follicles to grow and release estrogen.

Accepted Answer

follicle s

Question 9

The posterior pituitary

Accepted Answer

A)  is the source of releasing hormones. 
B)  produces four major tropic hormones. 
C)  secretes oxytocin and the antidiuretic hormone vasopressin. 
D)  produces growth hormone and prolactin. 
E)  All of the choices are correct. 
A)  is the source of releasing hormones. 
B)  produces four major tropic hormones. 
C)  secretes oxytocin and the antidiuretic hormone vasopressin. 
D)  produces growth hormone and prolactin. 
E)  All of the choices are correct.

Question 10

Tadpoles metamorphose into frogs because of

Accepted Answer

A)  decreases in iodine leading to less thyroid hormone. 
B)  decreases in juvenile hormone from the corpora alata. 
C)  increases in epinephrine from the adrenals. 
D)  activation of the thyroid gland and increases in growth hormone. 
E)  sex hormones. 
A)  decreases in iodine leading to less thyroid hormone. 
B)  decreases in juvenile hormone from the corpora alata. 
C)  increases in epinephrine from the adrenals. 
D)  activation of the thyroid gland and increases in growth hormone. 
E)  sex hormones.

Question 11

The preparation of the mammary glands for secretion of milk requires the action of

Accepted Answer

A)  progesterone. 
B)  prolactin. 
C)  estrogen. 
D)  human chorionic gonadotropin. 
A)  progesterone. 
B)  prolactin. 
C)  estrogen. 
D)  human chorionic gonadotropin.

Question 12

The maintenance of circadian rhythms is related to

Accepted Answer

A)  prolactin. 
B)  melatonin. 
C)  oxytocin. 
D)  prostaglandins. 
E)  vasotocin. 
A)  prolactin. 
B)  melatonin. 
C)  oxytocin. 
D)  prostaglandins. 
E)  vasotocin.

Question 13

Most hormones travel by

Accepted Answer

A)  intentionally seeking out the tissue they will affect. 
B)  only traveling down the bloodstream in the direction of the target tissues. 
C)  the lymphatic system. 
D)  seeking the neurons that are going to the target tissue and using them as pathways. 
E)  The bloodstream throughout the body, but only the target tissues will respond to their presence. 
A)  intentionally seeking out the tissue they will affect. 
B)  only traveling down the bloodstream in the direction of the target tissues. 
C)  the lymphatic system. 
D)  seeking the neurons that are going to the target tissue and using them as pathways. 
E)  The bloodstream throughout the body, but only the target tissues will respond to their presence.

Question 14

The molting hormone or ecdysone in insects

Accepted Answer

A)  favors the development of adult structures. 
B)  favors the development of larval structures. 
C)  does not appear to act directly on the chromosomes. 
D)  is not a steroid hormone. 
E)  is toxic to humans. 
A)  favors the development of adult structures. 
B)  favors the development of larval structures. 
C)  does not appear to act directly on the chromosomes. 
D)  is not a steroid hormone. 
E)  is toxic to humans.

Question 15

The two hormones involved in insect metamorphosis are molting hormone and the __________ hormone.

Accepted Answer

The answer of The two hormones involved in insect metamorphosis...

Question 16

Many hormones,upon arriving at a target cell,combine with a receptor site on the membrane to cause the release of an enzyme called the ______ ______.

Accepted Answer

The answer of Many hormones,upon arriving at a target cell,combine...

Question 17

Many hormones are controlled by negative feedback mechanisms that operate between the endocrine gland and the ______ ______.

Accepted Answer

The answer of Many hormones are controlled by negative feedback...

Question 18

Neurosecretory cells

Accepted Answer

A)  are discharged directly into the circulation. 
B)  link the nervous and endocrine systems. 
C)  occur in all animal groups. 
D)  All of the choices are correct. 
A)  are discharged directly into the circulation. 
B)  link the nervous and endocrine systems. 
C)  occur in all animal groups. 
D)  All of the choices are correct.

Question 19

Discuss the potential effects of anabolic steroid abuse by teenagers.

Accepted Answer

Anabolic steroid abuse by teenagers can

Question 20

The pituitary gonadotropins are _______ _______ ________ and luteinizing hormone (LH).

Accepted Answer

follicle s

Exam 34: Chemical Coordination: Endocrine System

Why do you suppose there is only one hormone produced by the intermediate lobe of the anterior pituitary?

Calcium levels in the blood and bone are controlled by

Steroid hormones diffuse directly into target cells where,after combining with nuclear receptors,they act on specific genes to cause an increase or decrease in _____________________ synthesis.

If you are interested in developing a "pesticide" hormone spray that will prevent insects from developing into adult pests,you would need to synthesize

Compare the functions of neurotransmitters with those of parahormones.

The pancreas produces two hormones that regulate sugar metabolism by antagonistic action:

What hormone stimulates the production of insulin-like growth factor or somatomedin by the liver in humans?

Early in the menstrual cycle of human females,the blood levels of ______ ______ hormone and luteinizing hormone begin to rise slowly,prompting the ovarian follicles to grow and release estrogen.

The posterior pituitary

Tadpoles metamorphose into frogs because of

The preparation of the mammary glands for secretion of milk requires the action of

The maintenance of circadian rhythms is related to

Most hormones travel by

The molting hormone or ecdysone in insects

The two hormones involved in insect metamorphosis are molting hormone and the __________ hormone.

Many hormones,upon arriving at a target cell,combine with a receptor site on the membrane to cause the release of an enzyme called the ______ ______.

Many hormones are controlled by negative feedback mechanisms that operate between the endocrine gland and the ______ ______.

Neurosecretory cells

Discuss the potential effects of anabolic steroid abuse by teenagers.

The pituitary gonadotropins are _______ _______ ________ and luteinizing hormone (LH).

Life: Biological Principles and the Science of Zoology

The Origin and Chemistry of Life

Cells As Units of Life

Cellular Metabolism

Genetics: a Review

Organic Evolution

The Reproductive Process

Principles of Development

Architectural Pattern of an Animal

Taxonomy and Phylogeny of Animals

Unicellular Eukaryotes

Sponges and Placozoans

Radiate Animals

Acoelomorpha,Platyzoa,and Mesozoa

Polyzoa and Kryptrochozoa

Molluscs

Annelids and Allied Taxa

Smaller Ecdysozoans

Trilobites, Chelicerates, and Myriapods

Crustaceans

Support, Protection, and Movement

Chaetognaths, Echinoderms, and Hemichordates

Chordates

Fishes

Early Tetrapods and Modern Amphibians

Amniote Origins and Nonavian Reptiles

Birds

Mammals

Support, protection, and Movement

Homeostasis: Osmotic Regulation, Excretion, and Temperature Regulation

Homeostasis: Internal Fluids and Respiration

Digestion and Nutrition

Nervous Coordination: Nervous System and Sense Organs

Immunity

Animal Behavior

Animal Distributions

Animal Ecology

Filters

Early in the menstrual cycle of human females,the blood levels of hormone and luteinizing hormone begin to rise slowly,prompting the ovarian follicles to grow and release estrogen.

Many hormones,upon arriving at a target cell,combine with a receptor site on the membrane to cause the release of an enzyme called the .

Many hormones are controlled by negative feedback mechanisms that operate between the endocrine gland and the .

The pituitary gonadotropins are ___ _ ______ and luteinizing hormone (LH).