Chapter 15 - Endocrine System Flashcards
Prostaglandins (PGs)
tissue hormones
releasing hormones
allowing the secretion of other hormones to take place
inhibiting hormones
preventing the secretion of other hormones
Adam’s apple Protrusion in the neck caused by a fold of thyroid
cartilage.
Adam’s apple Protrusion in the neck caused by a fold of thyroid
cartilage.
adenohypophysis
Anterior lobe of the pituitary gland.
adrenal cortex
Outer portion of the adrenal gland; helps control metabolism, inflammations, sodium and potassium retention, and effects of stress.
adrenal gland
One of two glands, each of which is situated on top of each kidney.
adrenaline
Epinephrine; secreted by adrenal medulla.
adrenal medulla
Inner portion of adrenal glands; releases large quantities of hormones during stress.
adrenocorticotropic hormone (ACTH)
Hormone secreted by anterior pituitary; involved in the control of the adrenal cortex.
aldosterone
Hormone secreted by adrenal cortex; mineralocorticoid.
alpha cells
Specialized cells that produce glucagon in the pancreas.
androgen
Any male hormone, such as testosterone.
antidiuretic hormone (ADH)
Posterior pituitary hormone that increases water reabsorption.
beta cells
Specialized cells that produce insulin in the pancreas.
calcitonin
Hormone secreted by the thyroid gland and other endocrine glands; helps control blood calcium levels.
catecholamines
Hormones, such as epinephrine, released in response to stress.
corticosteroids
Steroids produced by the adrenal cortex.
cortisol
Hydrocortisone.
ductless gland
Endocrine gland.
electrolyte
Any substance that conducts electricity and is decomposed by it.
endocrine gland
Gland that secretes substances into the bloodstream instead of into ducts.
epinephrine
Hormone released by the adrenal medulla in response to stress; adrenaline.
exocrine gland
Any gland that releases substances through ducts to a specific location.
follicle-stimulating hormone (FSH)
Hormone released by the anterior pituitary to aid in production of ova and sperm.
gland
Any organized mass of tissue secreting or excreting substances.
glucagon
Hormone released by the pancreas to increase blood sugar.
glucocorticoids
Hormones released by the adrenal cortex.
glycogen
converted glucose stored in the liver for future use.
growth hormone (GH)
Hormone released by the anterior pituitary for stimulating growth.
hormone
substance secreted by glands and carried in the bloodstream to various parts of the body.
hypophysis
Pituitary gland.
hypothalamus
Gland in the nervous system that releases hormones to aid in regulating pituitary hormones.
inhibiting factor
Substance in a hormone that prevents the secretion of other hormones.
insulin
Substance released by the pancreas to lower blood sugar.
islets of Langerhans
Specialized cells in the pancreas that release insulin and glucagon.
isthmus
Narrow band of tissue connecting the two lobes of the thyroid gland.
luteinizing hormone (LH)
Hormone released to aid in maturation of ova and ovulation in the female; and aids in the secretion of testosterone in males.
melanocyte-stimulating hormone (MSH)
Hormone released by the pituitary gland; aids in development of melanin pigment of the skin.
melatonin
Hormone released by the pineal gland; affects sexual function and sleep patterns.
metabolism
The chemical changes in cells that provide energy for vital processes and activities and through which new material is assimilated.
mineralocorticoid
Steroid secreted by adrenal cortex.
neurohypophysis
Posterior lobe of pituitary gland.
norepinephrine
Hormone secreted by adrenal medulla.
ovary
One of two female reproductive glands that secrete hormones in the endocrine system.
oxytocin
Hormone released by the posterior pituitary gland to aid in uterine contractions and lactation.
pancreas
Gland of both the endocrine system (blood sugar control) and the digestive system (as an exocrine gland).
parathormone (PTH)
Parathyroid hormone.
parathyroid
One of four glands located adjacent to the thyroid gland on its dorsal surface that help maintain levels of blood calcium.
parathyroid hormone (PTH)
Hormone released by parathyroid glands to help raise blood calcium levels.
pineal gland
Gland located above pituitary gland; secretes melatonin.
pituitary gland
Major endocrine gland; secretes hormones essential to metabolic functions.
receptor
Part of a target cell with properties compatible with a particular substance (hormone).
releasing factor
Substance in a hormone that allows secretion of other hormones.
somatotrophic hormone (STH)
Hormone secreted by anterior pituitary gland; important in growth and development.
suprarenal gland
Adrenal gland.
sympathomimetic
Mimicking functions of the sympathetic nervous system.
target cell
Cell with receptors that are compatible with specific hormones.
testis (pl., testes)
One of two male organs that secrete hormones in the endocrine system.
thymus gland
Gland that is part of the immune system as well as part of the endocrine system; aids in the maturation of T and B cells.
thyroid gland
gland with two lobes located on either side of the trachea; helps control blood calcium levels and metabolic functions.
thyroid-stimulating hormone (TSH)
Hormone secreted by anterior pituitary gland; stimulates release of thyroid hormones.
thyroxine (T4)
Compound found in or manufactured for thyroid gland; helps regulate metabolism.
triiodothyronine (T3)
Thyroid hormone that stimulates growth.
vasopressin
Hormone secreted by pituitary gland; raises blood pressure.
aden(o)
gland
adren(o), adrenal(o)
adrenal glands
gluc(o)
glucose
glyc(o)
glycogen
gonad(o)
sex glands
pancreat(o)
pancreas
parathyroid(o)
parathyroid
thyr(o), thyroid(o)
thyroid gland
ACTH
adrenocorticotropic hormone
ADH
ADH antidiuretic hormone
CRH
corticotropin-releasing hormone
DM
diabetes mellitus
OT
oxytoxin
FSH
follicle-stimulating hormone
GH
growth hormone
GTT
glucose tolerance test
HCG
human chorionic gonadotropin
IDDM
insulin-dependent diabetes mellitus
LH
luteinizing hormone
MSH
melanocyte-stimulating hormone
NIDDM
noninsulin-dependent diabetes mellitus
PG
prostaglandins
PRL
prolactin
PTH
parathyroid hormone, parathormone
STH
somatotropin hormone
TSH
thyroid-stimulating hormone
blood sugar, blood glucose
Test for glucose in blood.
fasting blood sugar
Test for glucose in blood following a fast of 12 hours.
glucose tolerance test (GTT)
Blood test for body’s ability to metabolize carbohydrates; taken after a 10–12-hour fast, then repeated every hour for 4 to 6 hours after ingestion of a sugar solution.
glycosylated hemoglobin A1C
Blood test for an average of glucose levels over the previous 2–3 months.
postprandial blood sugar
Test for glucose in blood, two hours after a meal.
radioactive immunoassay (RIA)
Test for measuring hormone levels in plasma; taken after radioactive solution is ingested.
radioactive iodine uptake
Test for how quickly the thyroid gland pulls in ingested iodine.
thyroid function test or study
Test for levels of TSH, T 3, and T 4 in blood plasma to determine thyroid function.
thyroid scan
Imaging test for thyroid abnormalities.
urine sugar
test for diabetes; determined by presence of sugar in urine.
tetany
Severe, continual muscle contractions
Adrenogenital syndrome
results in symptoms of excessive androgens both in men and women
acidosis
Abnormal accumulation of ketones in the body.
acromegaly
Abnormally enlarged features resulting from a pituitary tumor and hypersecretion of growth hormone.
Addison’s disease
Underactivity of the adrenal glands.
Cushing’s syndrome
Group of symptoms caused by overactivity of the adrenal glands.
diabetes insipidus
Condition caused by hyposecretion of antidiuretic hormone (ADH).
diabetic nephropathy
Kidney disease due to diabetes.
diabetic neuropathy
Loss of sensation in the extremities due to diabetes.
diabetic retinopathy
Gradual loss of vision due to diabetes.
dwarfism
abnormally stunted growth caused by hyposecretion of growth hormone, congenital lack of a thyroid gland, or a genetic defect.
exophthalmos
Abnormal protrusion of the eyes typical of Graves’ disease.
gigantism
Abnormally fast and large growth caused by hypersecretion of growth hormone.
glucosuria or glycosuria
Glucose in the urine.
goiter
Abnormal enlargement of the thyroid gland.
Graves’ disease
Overactivity of the thyroid gland.
hirsutism
Abnormal hair growth due to an excess of androgens.
hyperadrenalism
overactivity of the adrenal glands.
hyperparathyroidism
Overactivity of the parathyroid glands.
hypersecretion
Abnormally high secretion, as from a gland.
hyperthyroidism
Overactivity of the thyroid gland.
hypoadrenalism
Underactivity of the adrenal glands.
hypoglycemia
Abnormally low level of glucose in the blood.
hypoparathyroidism
Underactivity of the parathyroid glands.
hyposecretion
Abnormally low secretion, as from a gland.
hypothyroidism
Underactivity of the thyroid gland.
ketoacidosis
Condition of high acid levels caused by the abnormal accumulation of ketones in the body.
ketosis
Condition caused by the abnormal release of ketones in the body.
myxedema
Advanced adult hypothyroidism.
pancreatitis
Inflammation of the pancreas.
polydipsia
Excessive thirst.
polyuria
Excessive excretion of urine, resulting in frequent urination.
syndrome of inappropriate ADH (SIADH)
Excessive secretion of antidiuretic hormone.
tetany
Neurological syndrome, usually due to decreased serum levels of calcium in the blood.
thyrotoxicosis
State of dangerously high levels of thyroid hormone.
Type I diabetes
Endocrine disorder with abnormally low or completely absent levels of insulin; also known as insulin-dependent diabetes mellitus (IDDM).
Type II diabetes
Disease caused by failure of the body to recognize insulin that is present or by an abnormally low level of insulin; also known as noninsulin-dependent diabetes mellitus (NIDDM); usually adult onset.
virilism
Condition with excessive androgen production, often resulting in the appearance of mature male characteristics in young.
adenectomy
Removal of a gland.
adrenalectomy
Removal of an adrenal gland.
hypophysectomy
Removal of the pituitary gland. Also called hypophysis.
pancreatectomy
Removal of the pancreas.
parathyroidectomy
Removal of one or more of the parathyroid glands.
thymectomy
Removal of the thymus gland.
thyroidectomy
Removal of the thyroid.
antihyperglycemic
Agent that lowers blood glucose.
antihypoglycemic
Agent that raises blood glucose.
hormone replacement therapy (HRT)
ingestion of hormones to replace missing (or increase low levels of needed) hormones.
human growth hormone
Naturally occurring substance in the body that promotes growth; synthesized substance that serves the same function.
hypoglycemic
Agent that lowers blood glucose.
radioactive iodine therapy
Use of radioactive iodine to eliminate thyroid tumors.
steroid
A hormone or chemical substance released by several endocrine glands or manufactured in various medications.