Chapter 16: The Endocrine System
The major stimulus for release of parathyroid hormone is
Humoral
The anterior pituitary secretes all but
Antidiuretic hormone
A hormone not involved in glucose metabolism is
Aldosterone
Parathyroid hormone
Demineralizes bone and raises blood calcium levels
Choose from the following key to identify the hormones described
1. Important anabolic hormone; many of its effects mediated by IGFs
Growth hormone
Choose from the following key to identify the hormones described
2. Cause the kidneys to conserve water and/or salt (two choices)
Aldosterone & Antidiuretic hormone
Choose from the following key to identify the hormones described
3. Stimulates milk production
Prolactin
Choose from the following key to identify the hormones described
4. Tropic hormone that stimulates the gonads to secrete sex hormones
Luteinizing hormone
Choose from the following key to identify the hormones described
5. Increases uterine contraction during birth
Oxytocin
Choose from the following key to identify the hormones described
6. Major metabolic hormone(s) of the body
T4 and T3
Choose from the following key to identify the hormones described
7. Causes reabsorption of sodium ions by the kidney
Aldosterone
Choose from the following key to identify the hormones described
8. Tropic hormone that stimulates the thyroid gland to secrete thyroid hormone
TSH
Choose from the following key to identify the hormones described
9. Secreted by the posterior pituitary (two choices)
Antidiuretic hormone & Oxytocin
Choose from the following key to identify the hormones described
10. The only steroid hormone on the list
Aldosterone
A hypodermic injection of epinephrine would
Increase heart rate, increase blood pressure, dilate the bronchi of the lungs, and decrease peristalsis
Testosterone is to the male as which hormone is to the female?
Estrogen
If anterior pituitary secretion is deficient in a growing child, the child will
Become a dwarf but have fairly normal body proportions
If there is adequate carbohydrate intake, secretion of insulin results in
All of these
Hormones
Are carried to all body parts of the body in the blood
Some hormones act by
All of these
Absence of thyroid hormone would result in
Depression of the CNS and lethargy
Medullary chromaffin cells are found in the
Adrenal gland
Atrial natriuretic peptide secreted by the heart has exactly the opposite function of this hormone secreted by the zona glomerulosa
Aldosterone
Endocrine glands differ from exocrine glands in that they do NOT ______.
have ducts
Hormones can be all of the following except______.
carbohydrates
Target organs respond to water-soluble hormones because of the presence of _____ on the cell membranes.
specific receptors
Most of the amino acid-based hormones affect the target organs using _______.
intracellular second messengers
Hormones that directly activate genes are classified as _____.
lipid soluble
The islets of Langerhans are found in which endocrine organ?
Pancreas
In which region of the adrenal gland is aldosterone produced?
Adrenal cortex
This gland atrophies after puberty.
Thymus
Which endocrine gland is tiny, yellow-brown in color, and arranged in thick, branching cords?
Parathyroid gland
Where is oxytocin produced?
Hypothalamus
The epiphyseal is the target organ of this hormone.
GH
What are the effects of PTH?
All of the above
This hormone is important in sodium regulation and therefore water balance.
Aldosterone
For which hormone is the role in males NOT well understood?
PRL
The target organ of thyrotropin-releasing hormone is the _____.
Anterior pituitary gland
Which area of the brain regulates the endocrine system?
Hypothalamus
Much of the endocrine system regulates itself through a process called _______.
negative feedback
Hormones are secreted in response to all of the following stimuli EXCEPT ______.
up-regulation
The anterior pituitary stimulates other endocrine organs by secreting a group of hormones called _____.
tropic hormones
An excess of hormones in the blood may cause target organs to decrease the number of receptors for that hormone in a process called _____.
down-regulation
Acromegaly is a result of hypersecretion of this hormone.
Growth hormone
Endemic goiter results from a lack of _____ in the diet.
iodine
Hypoglycemia is a problem with which hormone?
Insulin
Cushing's disease is caused by _____.
Hypersecretion of the adrenal glands
Exophthalmos is a sign of hypersecretion of this hormone.
Thyroxine
A person with endemic goiter suffers from _____.
A hypofunctioning thyroid gland