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Advanced Medical Terminology
Lesson 18: Endocrine System
89
Medical
Professional
09/20/2008

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Term
ADRENAL CORTEX
Definition
Outer section (cortex) of each adrenal gland; secretes cortisol, aldosterone, and sex hormones
Term
ADRENAL MEDULLA
Definition
Inner section (medulla) of each adrenal gland; secretes spinephrine and norephinephrine
Term
OVARIES
Definition
Located in the lower abdomen of the female; responsible for egg production and estrogen and progesterone secretion
Term
PANCREAS
Definition
Located behind the stomach. Islet (alpha and beta) cells (islets of Langerhans) secrete hormones from the pancreas. The pancreas also contains cells that are exocrine in function. They secrete enzymes, via a duct into the small intestine to aid digestion
Term
PARATHYROID GLANDS
Definition
Four small glands on the posterior of the thyroid gland. Some patients may have 3 or 5
Term
PITUITARY GLAND (HYPOPHYSIS)
Definition
Located at the base of the brain in the sella turcica; composed of an anterior lobe (adenohypophysis) and a posterior lobe (neurohypophysis). It weighs only 1/16th of an ounce and is a half inch across
Term
TESTES
Definition
Two glands enclosed in the scrotal sac of a male; responsible for sperm production and testosterone secretion
Term
THYROID GLAND
Definition
Located in the neck on either side of the trachea; secretes thyroxine.
Term
ADRENALINE (EPINEPHRINE)
Definition
Secreted by the adrenal medulla; increases heart rate and blood pressure
Term
ADRENOCORTICOTROPIC HORMONE (ACTH)
Definition
Secreted by the anterior lobe of the pituitary gland (adenohypophysis)
Term
ALDOSTERONE
Definition
Secreted by the adrenal cortex; increases salt (sodium) reabsorption
Term
ANDROGEN
Definition
Male hormone secreted by the testes and to a lesser extent by the adrenal cortex; testosterone is an example
Term
ANTIDIURETIC HORMONE (ADH)
Definition
Secreted by the posterior lobe of the pituitary gland (neurohypophysis), ADH (vasopressin) increases reabsorption of water by the kidney
Term
CALCITONIN
Definition
Secreted by the thyroid gland; decreases blood calcium levels
Term
CORTISOL
Definition
Secreted by the adrenal cortex; increases blood sugar. It is secreted in times of stress and has an anti-inflammatory effect
Term
EPINEPHRINE (ADRENALINE)
Definition
Secreted by the adrenal medulla; increases heart rate and blood pressure and dilates airways (sympathomimetic). It is part of the body's "fight or flight" reaction
Term
ESTRADIOL
Definition
Estrogen (female hormone) secreted by ovaries
Term
ESTROGEN
Definition
Female hormone secreted by the ovaries and to a lesser extent  by the adrenal cortex
Term
FOLLICLE-STIMULATING HORMONE (FSH)
Definition
Secreted by the anterior lobe of the pituitary gland (adenohypophysis). FSH stimulates hormone secretion and egg production by the ovaries and sperm production by the testes.
Term
GLUCAGON
Definition
Secreted by the alpha islet cells of the pancreas; increases blood sugar by the conversion of glycogen (starch) to glucose
Term
GROWTH HORMONE (GH); SOMATOTROPIN
Definition
Secreted by the anterior love of the pituitary gland (adenohypophysis); stimulates growth of soft tissues and bones
Term
INSULIN
Definition
Secreted by islet cells (beta) of the pancreas. Insulin lowers blood sugar by transport and conversion of glucose to glycogen.
Term
LUTEINIZING HORMONE (LH)
Definition
Secreted by the anterior lobe of the pituitary gland (adenohypophysis); stimulates ovulation in females and testosterone secretion in males
Term
NOREPINEPHRINE
Definition
Secreted by the adrenal medulla; increases heart rate and blood pressure (sympathomimetic)
Term
OXYTOCIN (OT)
Definition
Secreted by the posterior lobe of the pituitary gland; stimulates contraction of the uterus during labor and childbirth
Term
PARATHORMONE (PTH)
Definition
Secreted by the parathyroid glands; increases blood calcium
Term
PROGESTERONE
Definition
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
SOMATOTROPIN (STH)
Definition
Secreted by the anterior lobe of the pituitary gland; growth hormone
Term
TESTOSTERONE
Definition
Male hormone secreted by the testes
Term
THYROID-STIMULATING HORMONE (TSH); THYROTROPIN
Definition
Secreted by the anterior lobe of the pituitary gland. TSH acts on the thyroid gland to promote its functioning
Term
THYROXINE (T4)
Definition
Secreted by the thyroid gland; also called tetraiodothyronine. T4 increases metabolism in cells
Term
TRIIODOTHYRONINE (T3)
Definition
Secreted by the thyroid gland; T3 increases the metabolism in cells
Term
VASOPRESSIN
Definition
Secreted by the posterior lobe of the pituitary ; antidiuretic hormone (ADH)
Term
CATECHOLAMINES
Definition
Hormones derived from an amino acid and secreted by the adrenal medulla. Epinephrine is a catecholamine
Term
CORTICOSTEROIDS
Definition
Hormones (steroids) produced by the adrenal cortex. Examples are cortisol (raises sugar levels), aldosterone (raises salt reabsorption by kidneys), and androgens and estrogens (sex hormones)
Term
ELECTROLYTE
Definition
Mineral salt found in the blood and tissues and necessary for proper functioning of cells; potassium, sodium, and calcium are electrolytes
Term
GLUCOCORTICOID
Definition
Steroid hormone secreted by the adrenal cortex; regulates glucose' fat' and protein metabolism. Cortisol raises blood sugar and is part of the stress response
Term
HOMEOSTASIS
Definition
Tendency of an organism to maintain a constant internal environment
Term
HORMONE
Definition
Substance, secreted by an endocrine gland, that travels through the blood to a distant organ of gland where it influences the structure or function of that organ or gland
Term
HYPOTHALAMUS
Definition
Region of the brain lying below the thalamus and above the pituitary gland. It secretes releasing factors and hormones that affect the pituitary gland
Term
MINERALOCORTICOID
Definition
Steroid hormones secreted by the adrenal cortex to regulate mineral salts (electrolytes) and water balance in the body. Aldosterone is an example
Term
RECEPTOR
Definition
Cellular or nuclear protein that binds to a hormone so that a response can be elicited
Term
SELLA TURCICA
Definition
Cavity in the skull that contains the pituitary gland
Term
SEX HORMONES
Definition
Steroids (androgens and estrogens) produced by the adrenal cortex to influence male and female sexual characteristics
Term
STEROID
Definition
Complex substance related to fats (derived from a sterol, such as cholesterol) and of which many hormones are made. Examples of steroids are estrogens, androgens, glucocorticoids, and mineralocorticoids
Term
SYMPATHOMIMETIC
Definition
Pertaining to mimicking or copying the effect of the sympathetic nervous system. Adrenaline is a sympathomimetic hormone (it raises blood pressure and heart rate and dilates airways)
Term
TARGET TISSUE
Definition
Cells of an organ that are affected or stimulated by specific hormones
Term
ADEN/O
Definition
Gland
Term
ADREN/O
Definition
Adrenal glands
Term
ADRENAL/O
Definition
Adrenal glands
Term
GONAD/O
Definition
Sex glands (ovaries/testes)
Term
PANCREAT/O
Definition
Pancreas
Term
PARATHYROID/O
Definition
Parathyroid gland
Term
PITUITAR/O
Definition
Pituitary gland, hypophysis
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
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 together
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
Term
TRI-
Definition
Three
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