Chapter 18 Endocrine System Flashcards
Adrenal Medulla
Inner section (medulla) of each adrenal gland; secretes epinephrine and norepinephrine.
Pituitary Gland
Located at the base of the brain in sella turcica;composed of an anterior lobe (adenohyphysis) and a posterior lobe (neurohypophysis).
Androgen
Male hormone secreted by the testes and to a lesser extent by the adrenal cortex; testosterone is an example.
Antidiuretic hormone (ADH)
Secreted by the posterior lobe of the pituitary gland. ADH (vasopressin) increases reabsorption of water by the kidney.
Estrogen
Female hormone secreted by the ovaries and to a lesser extent by the adrenal cortex.
Growth hormone (GH)
Secreted by the anterior lobe of the pituitary gland; stimulates growth of bones and soft tissues.
Progesterone
Secreted by the ovaries; prepares the uterus for pregnancy.
Testosterone
Male hormone secreted by the testes.
Thyroxine (T4)
Secreted by the thyroid gland; also called tetraiodothyronine. T4 increases metabolism in cells.
Triiodothyronine (T3)
Secreted by the thyroid gland; T3 increases metabolism in cells.
Corticosteroids
Hormones (steroids) produced by the adrenal cortex.
Homeostasis
Tendency of an organism to maintain a constant internal environment.
Hormone
Chemical, secreted by an endocrine gland, that travels through the blood to a distant organ or gland where it influences the structure or function of that organ or gland.
Hypothalamus
Region of the brain lying below the thalamus and above the pituitary gland. It secretes releasing factors and hormone that affect the pituitary gland.
Receptor
Cellular or nuclear protein that binds to a hormone so that a response can be elicited.
Steroid
Complex substance related to fats (derived from a sterol, such as cholesterol) and of which many hormones are made.
Target tissue
Cells of an organ that are affected or stimulates by specific hormones.
Ster/o
Solid
-ol
Oil
Aden/o
Gland
Adrenal/o
Adrenal gland
Gonad/o
Sex glands (ovaries and testes)
Pancreat/o
Pancreas
Parathyroid/o
Parathyroid gland
Pituitar/o
Pituitary gland; hypophyis
Thyr/o
Thyroid/o
Thyroid gland
Andr/o
Male
Calc/o
Calci/o
Calcium
-tropin
To act on
Cortic/o
Cortex, outer region
Crin/o
Secreted
Dips/o
Thirst
Estr/o
Female
Gluc/o
Glyc/o
Sugar
Poly-
Many or increase
-agon
To assemble or gather together
Home/o
Sameness
-stasis
Controlling
Hormon/o
Hormone
Kal/i
Potassium
Lact/o
Milk
-in
Substance
Myx/o
Mucus
Natr/o
Sodium
-ectomy
Removal; excision; resection
-edema
Swelling
Phys/o
Growing
Somat/o
Body
Ster/o
Solid structure
Toc/o
Childbirth
Oxy-
Rapid, sharp or acute
Toxic/o
Tox/o
Poison
Ur/o
Urine
-emia
A blood condition of..
- in
- ine
Substance
-tropin
Stimulating the function of (to turn or act on)
-uria
Urine condition
Eu-
Good, normal
Pan-
All
Tetra-
Four
Tri-
Three
Goiter
Enlargement of the thyroid gland.
Hyperthyroidism
Overactivity o the thyroid gland;thyrotoxicosis
Exophthalmos
Protrusion of the eyeballs or proptosis, occurs as a result of swelling of tissue behind the eyeball, pushing it forward.
Hypothyroidism
Under-activity of the thyroid gland.
Myxedema
Advanced hypothyroidism in adulthood.
Cretinism
Extreme hypothyroidism during infancy and childhood leads to a lack of normal physical and mental growth.
Hyperparathyroidism
Excessive production of parathormone.
Hypoparathyroidism
Deficient production of parathyroid hormone.
Cushing syndrome
Group of signs and symptoms produced by excess cortisol from the adrenal cortex.
Addison disease
Hypofunctioning of the adrenal cortex.
Diabetes mellitus (DM)
Lack of insulin secretion or resistance of insulin in promoting sugar, starch, and fat metabolism in cells.
Type1 diabets
Autoimmune disease
Type 2 diabetes
Insulin resistance.
Ketoacidosis
Fats are improperly burned, leading to an accumulation of ketones and acids in the body.
Acromegaly
Hyper secretion of growth hormone from the anterior pituitary after puberty, leading to enlargement of extremities.
Diabetes insipidus (DI)
Insufficient secretion of antidiuretic hormone (vasopressin)
Insipidus
Means tasteless, reflecting the condition of dilute urine.
Mellitus
Means sweet or like honey, reflecting the sugar content of urine.
Fast in plasma glucose (FPG)
Also known as fasting blood sugar test. Measures circulation glucose level in a patient who has fasted at least 8 hours.
Serum and urine tests
Measurement of hormones, electrolytes, glucose and other substances in serum (blood) and urine as indicators of endocrine function.
Thyroid function tests
Measurement of T3, T4 and T-SHIRT in the bloodstream
ACTH
Adrenocorticotropic hormone
ADH
Antidiuretic hormone
BMR
Basal metabolic rate
DI
Diabetes insipidus
DM
Diabetes mellitus
FBS
Fasting blood sugar
GTT
Glucose tolerance test
RIA
Radioimmunoassay
TSH
Thyroid-stimulating hormone