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Endocrine System
Week4 ME
42
Medical
Graduate
05/05/2017

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Term
adeno-
Definition
Gland
Term
hypothalamus
Definition
located below the thalamus and secretes releasing and inhibiting factors that affect the release of substances from the pituitary
Term
indirect-acting hormones
Definition
hormones released from the anterior pituitary gland, so called because they cause their target organ to produce a second hormone
Term
direct-acting hormones
Definition
hormones released from the posterior pituitary gland, so called because they produce the desired affect directly in the target organ
Term
adrenocorticotropic hormone
Definition
augments the growth and secretions of the adrenal cortex; abbreviated ACTH
Term
luteinizing hormone
Definition
augments ovulation and aids in the maintenance of pregnancy in females; abbreviated LH
Term
prolactin
Definition
augments milk secretion and influences maternal behavior
Term
oxytocin
Definition
stimulates uterine contractions during parturition and milk letdown from the mammary ducts
Term
thyroid gland
Definition
butterfly shaped gland on either side of the larynx
Term
triiodothyronine
Definition
one of the thyroid hormones that regulates metabolism; T3
Term
thyroxine
Definition
one of the thyroid hormones that regulates metabolism; abbreviated T4
Term
calcitonin
Definition
thyroid hormone that promotes calcium absorption into bones from blood
Term
parathyroid glands
Definition
four glands located on the surface of the thyroid gland; helps regulate blood calcium and phosphorous levels
Term
adrenal glands
Definition
located cranial to each kidney; regulate electrolytes, metabolism, sexual functions, and body's response to injury
Term
corticosteroids
Definition
hormones produced by the adrenal cortex
Term
glucocorticoids
Definition
groups of corticosteroids that regulate carbohydrate, fat, and protein metabolism
Term
vasopressor
Definition
substance that stimulates blood vessel contraction and increases blood pressure
Term
insulin
Definition
hormone that transports blood glucose into body cells or into storage
Term
glucagon
Definition
hormone that increases blood glucose
Term
thymus
Definition
gland predominant in young animals located near midline in the cranioventral portion of the thoracic cavity; immunological function through its role in the maturation of T-lymphocytes
Term
pineal gland
Definition
aggregation of cells located in the central portion of the brain; secretion of hormones that affect circadian rhythm. Small, conical endocrine gland
Term
melatonin
Definition
controls circadian rhythm and reproductive timing
Term
estrogen
Definition
hormone that atids in the development of secondary sex characteristics and regulates ovulation in females
Term
progesterone
Definition
hormone that aids in the maintenance of pregnancy
Term
ACTH stimulation test
Definition
blood analysis for cortisol levels after administration of syhnthetic adrenocorticotropic hormone; used to differentiate between pituitary-dependent hyperadrenocorticism from adrenal-dependent hyperadrenocorticism
Term
gland
Definition
an aggregation of cells specialized to secrete or excrete materials not related to their own function
Term
hypoadrenocorticism
Definition
a disorder caused by deficient adrenal cortex production of glucocorticoid; also known as Addison's disease
Term
insulinoma
Definition
a tumor of the islets of Langerhans of the pancreas
Term
gynecomastia
Definition
excessive mammary development in males
Term
antidiuretic hormone
Definition
maintains water balance in the body by augmenting water reabsorption in the kidneys
Term
euthyroidism
Definition
condition of normal thyroid function
Term
pancreas
Definition
contains specialized cells that secrete hormones that affect sugar and starch metabolism
Term
gonads
Definition
gamete producing glands
Term
diabetes mellitus
Definition
insufficient secretion of insulin or recognition of insulin by the body resulting in increased urination, drinking, and weight loss
Term
diabetes insipidus
Definition
insufficient antidiuretic hormone
Term
hypercrinism
Definition
condition of excessive gland secretion
Term
aldosteronism
Definition
disorder caused by excessive secretion of aldosterone by the adrenal cortex resulting in electrolyte imbalance
Term
hyperadrenocorticism
Definition
disorder caused by excessive adrenal cortex production of glucocorticoid resulting in increased urination, drinking, and redistribution of body fat; also called Cushing's disease
Term
adenohypophysis
Definition
anterior lobe of pituitary gland
Term
mineralocorticoids
Definition
adrenocortical hormones that are essential to the maintenance of adequate fluid volume in the interstitial and intravascular fluid comparments, normal cardiac output, and adequate levels of blood pressure
Term
iodine
Definition
chemical element, atomic number 53. Essential in nutrition, being especially prevalent in the colloid of the thyroid gland. Used in treatment of hypothyroidism
Term
neurohypophysis
Definition
posterior lobe of the pituitary gland; stores and secretes two hormones, oxytocin and antidiuretic hormone (vasopressin) which are released in response to neural stimulation
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