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Medical Vocab Ch #18 Endocrine System
Medical Coding & Billing Word Structures & Vocab.
160
Medical
Undergraduate 1
06/07/2010

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Term

Acromegaly

Definition
Enlargement of extremities due to increased secretion of growth hormone from the anterior pituitary gland.
Term
Addison disease
Definition
Hypofunctioning of the adrenal cortex; decreased secretion of aldosterone and cortisol.
Term
Adenectomy
Definition
Removal of a gland.
Term

Adenohypophysis

Definition
Anterior lobe of the pituitary gland.
Term
Adrenal cortex
Definition
Outer section of each adrenal gland.
Term
Adrenal medulla
Definition
Inner section of each adrenal gland.
Term
Adrenal virilism
Definition
Excessive secretion of adrenal androgens.
Term

Adrenalectomy

Definition
Removal of an adrenal gland.
Term
Adrenaline (epinephrine)
Definition
Hormone secreted by the adrenal medulla; epinephrine.
Term

Adrenocorticotropic hormone (ACTH)

Definition
Secretion from the anterior lobe of the pituitary gland; stimulates the adrenal cortex; ACTH.
Term

Adrenocorticotropin

Definition
Adrenocorticotropic hormone; ACTH.
Term
Adrenopathy
Definition
Disease of the adrenal glands.
Term

Aldosterone

Definition
Hormone secreted by the adrenal cortex; regulates salt and water balance.
Term

Androgen

Definition
Male hormone responsible for developing and maintaining male secondary sex characteristics.
Term

Antidiuretic hormone (ADH)

Definition
Secreted by the posterior lobe of the pituitary gland; promotes water reabsorption by the kidney.
Term
Calcitonin
Definition
Hormone secreted by the thyroid gland; lowers calcium levels in the blood.
Term

Catecholamines

Definition
Hormones secreted by the adrenal medulla; epinephrine (adrenaline) is an example.
Term
Corticosteroid
Definition
Hormone secreted by the adrenal cortex; cortisol and aldosterone are examples.
Term
Cortisol
Definition
Hormone secreted by the adrenal cortex; regulates the use of sugars, fats, and proteins in cells. Cortisol raises blood sugar.
Term
Cretinism
Definition
Hypothyroidism during infancy and childhood leading to a lack of normal physical and mental growth.
Term
Cushing syndrome
Definition
Group of symptoms produced by excess cortisol from the adrenal cortex; obesity, hyperglycemia, excess fat deposition in the body. High levels of exogenous cortisol (cortisone administration) can produce similar results.
Term
Diabetes insipidus
Definition
Insufficient secretion of antidiuretic hormone (vasopressin); signs are polyuria and polydipsia.
Term
Diabetes mellitus
Definition
Lack of insulin secretion (Type 1) or improper utilization of insulin by cells (Type 2) leading to a chronic disorder of carbohydrate, fat, and protein metabolism in cells.
Term
Dwarfism
Definition
Congenital hyposecretion of growth hormone from the anterior pituitary gland.
Term
Electrolyte
Definition
Substance that, in solution, carries an electric charge; examples are sodium (Na+), potassium (K+), calcium (Ca++) and chloride (Cl-).
Term
Endemic goiter
Definition
Enlargement of the thyroid gland due to lack of iodine in the diet.
Term
Endocrinologist
Definition
Medical specialist in the diagnosis and treatment of endocrine gland disorders.
Term

Epinephrine (adrenaline)

Definition
Hormone secreted by the adrenal medulla; increases heart rate and blood pressure
Term
Estradiol
Definition
Estrogen secreted by the ovaries.
Term
Estrogen
Definition
Female hormone secreted by the ovaries and to a lesser extent by the adrenal cortex in both males and females.
Term
Estrogenic
Definition
Pertaining to the producing of female characteristics or having the same effect as estrogen.
Term
Euthyroid
Definition
Normal functioning of the thyroid gland.
Term
Exophthalmometry
Definition
Measurement of eyeball protrusion.
Term

Exophthalmos

Definition
Protrusion of the eyeball (proptosis); symptom of hyperthyroidism.
Term
Fasting blood sugar
Definition
Measures circulating glucose level in a patient who has fasted at least 4 hours. This test can diagnose diabetes mellitus.
Term
Follicle-stimulating hormone (FSH)
Definition
Secretion of the anterior lobe of the pituitary gland; stimulates ovarian follicles to produce egg cells.
Term
Gastroparesis
Definition
Loss of motility of the stomach muscles, occurring as a long-term secondary complication of diabetes mellitus.
Term
Gigantism
Definition
Hypersecretion of growth hormone from the anterior pituitary gland before puberty, leading to abnormal overgrowth of body tissues.
Term
Glucagon
Definition
Hormone secreted by the pancreas (alpha islet cells); increases blood glucose (sugar) by conversion of glycogen to glucose.
Term
Glucocorticoid
Definition
Steroid hormone secreted by the adrenal cortex; cortisol is an example. It raises blood sugar.
Term
Glucose tolerance test
Definition
Measures the glucose levels in a blood sample taken at various intervals from a patient who has previously ingested glucose.
Term
Glycemic
Definition
Pertaining to blood sugar.
Term
Glycogen
Definition
Animal starch; glycogen is broken down (glycogenolysis) to produce sugar (glucose).
Term
Glycosuria
Definition
Sugar in urine.
Term
Goiter
Definition
Enlargement of the thyroid gland.
Term
Gonadotropin
Definition
Hormone secreted by the anterior lobe of the pituitary gland and acting on the ovaries or testes.
Term
Graves disease
Definition
Hyperfunctioning of the thyroid gland; thyrotoxicosis. This is the most common type of hyperthyroidism.
Term
Growth hormone (GH)
Definition
Secreted by the anterior lobe of the pituitary gland; somatotropin. It stimulates the growth of bones and soft tissues.
Term
Hirsutism
Definition
Excessive hair growth.
Term
Homeostasis
Definition
Tendency in an organism to return to a state of constancy and stability.
Term
Hormonal
Definition
Pertaining to a hormone.
Term

Hormone

Definition
Chemical secreted by an endocrine gland.
Term
Hypercalcemia
Definition
High levels of calcium in the bloodstream; often due to hyperparathyroidism.
Term

Hypercalciuria

Definition
High levels of calcium in urine.
Term
Hyperglycemia
Definition
High levels of sugar in the blood.
Term
Hyperinsulinism
Definition
Increased secretion of insulin from the beta islet cells of the pancreas.
Term
hyperkalemia
Definition
High levels of potassium in blood.
Term
Hyperparathyroidism
Definition
Increased secretion of parathormone from the parathyroid glands.
Term
Hyperthyroidism
Definition
Increased secretion of thyroid hormones from the thyroid gland.
Term
Hypocalcemia
Definition
Low levels of calcium in the blood.
Term
Hypoglycemia
Definition
Low levels of sugar in the blood.
Term
Hypogonadism
Definition
Deficient functioning of the gonads (ovaries or testes).
Term
Hypoinsulinism
Definition
Deficient production of insulin (pancreatic hormone).
Term
hypoinsulinism
Definition
Low levels of insulin.
Term

Hypokalemia

Definition
Low levels of potassium in the blood.
Term
Hyponatremia
Definition
Low levels of sodium in the blood.
Term
Hypoparathyroidism
Definition
Decreased secretion of parathormone from the parathyroid glands.
Term
Hypophysectomy
Definition
Removal of the pituitary gland.
Term
Hypophysis
Definition
Pituitary gland.
Term
Hypopituitarism
Definition
Deficient secretion of hormones from the pituitary gland.
Term
Hypothalamus
Definition
Region of the brain lying below the thalamus, but above the pituitary gland. It stimulates the pituitary gland to secrete and release hormones.
Term
Hypothyroidism
Definition
Decreased secretion of thyroid hormones from the thyroid gland.
Term
Insulin
Definition
Hormone secreted by the beta islet cells of the pancreas. Insulin helps sugar leave the blood and enter cells.
Term
Ketoacidosis
Definition
High levels of acids (ketones) in the blood; occurring in diabetes mellitus (type 2) when cells burn high levels of fats (producing ketones) because sugar is not available as fuel.
Term
Luteinizing hormone (LH)
Definition
Secreted by the anterior lobe of the pituitary gland; stimulates the ovaries to release eggs (ovulation) and produce hormones.
Term

Mineralocorticoid

Definition
Hormone secreted by the adrenal cortex; regulates salts (electrolytes) and water balance in the body. Aldosterone is an example.
Term

Myxedema

Definition
Hypofunctioning of the thyroid gland in adults.
Term
Neurohypophysis
Definition
Posterior lobe of the pituitary gland; secretes oxytocin and vasopressin.
Term
Nodular goiter
Definition
Enlargement of the thyroid gland due to growth of nodules (adenomas) on the thyroid gland.
Term

Norepinephrine

Definition
Hormone secreted by the adrenal medulla; increases blood pressure as part of the fight or flight reaction. It is a sympathomimetic.
Term
Oxytocin (OT)
Definition
Hormone secreted by the posterior lobe of the pituitary gland; stimulates contractions of the uterus during childbirth.
Term
Pancreas
Definition
Endocrine (islet cells) and exocrine (enzyme producing cells) gland behind the stomach.
Term
Pancreatectomy
Definition
Excision of the pancreas.
Term

Panhypopituitarism

Definition
Deficiency of all pituitary gland hormones.
Term
Parathormone (PTH)
Definition
Secreted by the parathyroid glands; regulates calcium in the blood.
Term
Parathyroid glands
Definition
Four small endocrine glands on the posterior side of the thyroid gland.
Term
Parathyroidectomy
Definition
Removal of parathyroid glands.
Term

Pheochromocytoma

Definition
Tumor of cells of the adrenal medulla; cells stain a dark (phe/o) or dusky color (chrom/o).
Term
Pineal gland
Definition
Small endocrine gland in the center of the brain; secretes melatonin.
Term
Pituitary gland
Definition
Endocrine gland at the base of the brain; anterior and posterior lobes secrete hormones.
Term
Polydipsia
Definition
Excessive thirst.
Term
Progesterone
Definition
Hormone secreted by the ovaries; prepares the uterus for pregnancy.
Term
Prolactin (PRL)
Definition
Secreted by the anterior lobe of the pituitary gland; promotes milk secretion.
Term
Radioactive iodine uptake
Definition
Test to measure the amount of radioactive iodine taken up by the thyroid gland; indicator of thyroid gland function.
Term
Receptor
Definition
Cellular or nuclear protein that binds to a hormone to elicit a response by the targeted tissue.
Term
Sella turcica
Definition
Cavity in the base of the skull; contains the pituitary gland.
Term
Somatotropin (STH)
Definition
Hormone secreted by the anterior lobe of the pituitary gland; growth hormone.
Term
Steroid
Definition
Complex substance related to fat (sterols; many hormones are steroids (estrogens, androgens, cortisol, aldosterone).
Term

Sympathomimetic

Definition
Low levels of potassium in the blood.
Term
Syndrome of inappropriate ADH
Definition
Excessive secretion of antidiuretic hormone (ADH, vasopressin) leading to water retention.
Term
Target tissue
Definition
Cells of an organ that are affected or stimulated by specific hormones.
Term
Testosterone
Definition
Hormone secreted by the testes.
Term
Tetany
Definition
Constant muscle contractions; associated with hypocalcemia and hypoparathyroidism.
Term
Tetraiodothyronine
Definition
Hormone secreted by the thyroid gland that increases body metabolism; thyroxine (T4).
Term
Thyroid carcinoma
Definition
Malignant tumor of the thyroid gland.
Term
Thyroid function tests
Definition
Measurement of thyroxine, triiodothyronine, and thyroid-stimulating hormone in the bloodstream.
Term
Thyroid gland
Definition
Endocrine gland in the neck on either side of the trachea.
Term
Thyroid scan
Definition
Administration of a radioactive compound and visualization of the thyroid gland with a scanning device.
Term
Thyroiditis
Definition
Inflammation of the thyroid gland.
Term
Thyrotoxicosis
Definition
Hyperthyroidism (overactivity of the thyroid gland).
Term
Thyrotropin (TSH)
Definition
Hormone secreted by the anterior lobe of the pituitary gland; stimulates the thyroid gland to secrete its hormones. Also called thyroid-stimulating hormone or TSH.
Term
Thyroxine (T4)
Definition
Hormone secreted by the thyroid gland to increase body metabolism (T4).
Term

Triiodothyronine (T3)

Definition
Hormone secreted by the thyroid gland (contains three atoms of iodine); stimulates body metabolism; T3.
Term
Vasopressin
Definition
Hormone secreted by the posterior lobe of the pituitary gland; stimulates the kidneys to reabsorb water. Also called antidiuretic hormone or ADH.
Term
aden/o
Definition
gland
Term
adren/o
Definition
adrenal glands
Term
adrenal/o
Definition
adrenal glands
Term
gonad/o
Definition
sex glands (ovaries and testes)
Term
pancreat/o
Definition
pancreas
Term
parathyroid/o
Definition
parathyroid gland
Term
pituitar/o
Definition
pituitary gland, hypophsis
Term
thyr/o
Definition
thyroid gland
Term
thyroid/o
Definition
thyroid gland
Term
andr/o
Definition
male
Term
calc/o, calci/o
Definition
calcium
Term
cortic/o
Definition
cortex, outer region
Term
crin/o
Definition
secrete
Term
dips/o
Definition
thirst
Term
estr/o
Definition
female
Term
gluc/o
Definition
sugar
Term
glyc/o
Definition
sugar
Term
home/o
Definition
sameness
Term
hormon/o
Definition
hormone
Term
kal/i
Definition
potassium (an electrolyte)
Term
lact/o
Definition
milk
Term
myx/o
Definition
mucus
Term
natr/o
Definition
sodium (an electrolyte)
Term
phys/o
Definition
growing
Term
somat/o
Definition
body
Term
ster/o
Definition
solid structure
Term
toc/o
Definition
childbirth
Term
toxic/o
Definition
poison
Term
ur/o
Definition
urine
Term
-agon
Definition
assemble, gather
Term
-emia
Definition
blood condition
Term
-in, -ine
Definition
a substance
Term
-tropin
Definition
stimulating the function of (to turn or act on)
Term
-uria
Definition
urine condition
Term
eu-
Definition
good, normal
Term
hyper-
Definition
excessive, above
Term
hypo-
Definition
deficient, below, under, less than normal
Term
oxy-
Definition
rapid, sharp, acid
Term
pan-
Definition
all
Term
tetra-
Definition
Four small endocrine glands on the posterior side of the thyroid gland.
Term
tri-
Definition
three
Term
-stasis
Definition
control
Term
-ol
Definition
oil
Term
-oid
Definition
resembling, derived from
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