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Chapter 19
Essential Medical Terminology 3rd Edition, Endocrine System
53
Biology
Undergraduate 3
04/03/2013

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Term
Pituitary Gland
Definition
is about the size of a pea, it is located on the underside of the brain in a depression at the base of the skull and is protected by the brain above it and the nasal cavities below it, it is also connected by a thin stalklike projection to the hypothalamus, complex gland that secretes many hormones that affect body functions
Term
Thyroid
Definition
consisting of a right and left lobe, is a U- or H-shaped gland located in front of the neck just below the larynx, the lobes are connected by a narrow piece of thyroid cartilage that produced the prominence the neck known as the Adams apple
Term
Parathyroid
Definition
are four small nodes of tissue embedded in he back side of the thyroid glands, they secrete a hormone which increases blood calcium levels
Term
Adrenal
Definition
also called suprarenal glands, the two glands sit one atop each kidney, each consists of two portions, the central region
Term
Pancreas
Definition
an elongated structure located behind the stomach in the left upper quadrant, the specialized cells that produce hormones are called the islets of Langerhans, these cells produce two hormones, insulin and glucogaon
Term
Ovaries
Definition
two small glands located in the upper pelvic cavity, on either side of uterine wall, near the fallopian tubes of the female. Each of the pair is almond-shaped and held in place by ligaments
Term
Testes
Definition
male gonads, are two small ovid glands suspended from the inguinal region of the male by the spermatic cord and surrounded by the scrotal sac
Term
Pineal
Definition
is a cone-shaped structure attached by a stalk to the posterior wall of the cerebrum. Its exact function is unclear , but it is thought to function as a light receptor and to play a part in regulation of the "biological clock". It secretes melatonin, the hormone believed to induce sleep
Term
Thymus
Definition
a single gland located behind the sternum in the mediastinum. It resembles a lymph gland in structure, as it is part of the lymphatic system, but it is also a hormone-secreting endocrine gland.
Term
Acromegaly
Definition
abnormal enlargement of the extremities of the skeleton, nose, jaws, fingers, and toes; caused by hypersecretion of the pituitary growth hormone after maturity
Term
Addison's Disease
Definition
bronzelike pigmentation of the skin, severe prostration, progressive anemia, low blood pressure, diarrhea, and digestive disturbance, caused by adrenal hypofunction
Term
Adrenalectomy
Definition
surgical excision of the adrenal gland
Term
Adrenogenital Syndrome
Definition
group of symptoms associated with alterations in sex characteristics due to abnormally increased production of androgens
Term
Adrenomegaly
Definition
enlargement of adrenal gland
Term
Cretinism
Definition
arrested physical and mental development owing to congenital lack of thyroid secretion
Term
Cushing's Disease
Definition
obesity, weakness, moon face, edema, and high blood pressure; caused by hyperfunction of the adrenals
Term
Diabetes Insipidus
Definition
a condition caused by insufficient excretion of antidiuretic hormone (ADH) (vasopressin) by the posterior pituitary gland. Deficient ADH causes the kidney tubules to fail to reabsorb needed water and salts. Clinical symptoms include polyuria (increased urination) and polydipsia (increased thirst). The person will complain of excessive thirst and drink large volumes of water. The urine will be very dilute with a low specific gravity. Synthetic preparations of ADH are administered as treatment
Term
Diabetes Mellitus
Definition
inability to metabolize sugar because of abnormal insulin function; high blood sugar, excessive urination, thirst, hunger, emaciation, and weakness are cardinal symptoms of the most severe type (type 1)
Term
Exophthalmic Goiter
Definition
toxic goiter; Graves' disease; protrusion of the eyeballs, swollen neck, weight loss, shaking, and mental deterioration are symptoms
Term
Gestational Diabetes
Definition
a condition in which pregnant women sometimes show abnormal glucose levels during the course of pregnancy (hyperglycemia)
Term
Goiter (Simple)
Definition
enlargement of the thyroid gland; swelling in the front part of the neck, mostly caused by dietary deficiency of iodine
Term
Hashimoto's Disease
Definition
a progressive disease of the thyroid gland with degeneration of its epithelium and replacement by lymphoid and fibrous tissue
Term
Hyperglycemia
Definition
blood sugar (glucose) level above normal
Term
Hyperthyroidism
Definition
excessive activity of the thyroid gland
Term
Hypothyroidism
Definition
underactivity of the thyroid gland. shortage of thyroid hormones cause a low body metabolism because of the body's reduced use of oxygen. Any one of several conditions can produce hypothyroidism, such as endemic goiter, thyroidectomy, faulty hormone synthesis, and congenital thyroid defects, a condition that is called cretinism, and which results in a child lacking normal mental and physical growth
Term
Myxedema
Definition
a dry, waxy type of swelling with deposits of mucin in the skin, swollen lips, and thickened nose, advanced hypothyroidism in adults
Term
Ovariorrhexis
Definition
rupture of an ovary
Term
Pancreaticogastrostomy
Definition
anastomosis of the pancreatic duct to the stomach
Term
Pancreatitis
Definition
inflammation of the pancreas due to autodigestion of pancreatic tissue by its own enzymes
Term
Pheochromocytoma
Definition
"pheochromo" means dusky color; tumor of the medulla characterized by hypertension, weight loss, and personality changes
Term
Simmonds' Disease (Panhypopituitarism)
Definition
generalized hypopituitarism owing to absence or damage of the pituitary gland; exhaustion, emaciation, and cachexia are symptoms
Term
Tetany
Definition
sharp flexion of the wrist and ankle joints, muscle twitching, cramps, and convulsions; caused by abnormal calcium metabolism
Term
Thyroidectomy
Definition
surgical excision of the thyroid gland
Term
Thyrotherapy
Definition
treatment with thyroid preparations
Term
Thyrotomy
Definition
surgical division of thyroid cartilage
Term
Acidosis
Definition
a pathologic condition caused by accumulation of acid in, or loss of base from, the body
Term
Anorexia
Definition
lack or loss of appetite for food
Term
Cachexia
Definition
malnutrition, wasting, and emaciation
Term
Cataract
Definition
clouding of the eye lens
Term
Convulsions
Definition
involuntary muscular contractions
Term
Diaphoresis
Definition
profuse perspiration
Term
Emaciation
Definition
excessive leanness; a wasted condition
Term
Endocrine
Definition
ductless gland that secretes directly into the bloodstream
Term
Exocrine
Definition
a ducted gland that secretes into various organs
Term
Gangrene
Definition
death of tissue from lack of circulation and consequent loss of nutrients
Term
Gland
Definition
an organ that secretes a metabolic substance. May be endocrine or exocrine
Term
Hypoglycemia
Definition
blood sugar (glucose) level is below normal
Term
Hypoglycemic Agent
Definition
drug for the diabetic to decrease the amount of glucose in the blood
Term
Hypophysectomy
Definition
excision of the pituitary gland (hypophysis)
Term
Insulin
Definition
a protein hormone produced by the pancreatic islets of Langerhans. It is secreted into the blood in response to a rise in concentration of blood glucose.
Term
Ketosis
Definition
accumulation of excessive amounts of ketone bodies in body tissue and fluids; a complication in some diabetic patients
Term
Ketoacidosis
Definition
accumulation of ketone bodies in the blood that results in metabolic acidosis
Term
Neuropathy
Definition
any functional disturbance and/or pathologic changes in the peripheral nervous system; a complication in some diabetic patients
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