Ch 11--Endocrine system Flashcards
Radi/o
Radioactive
-genesis
Production
-gen
Producing
Eu-
Normal; good
Acr/o
Extremity; top
Acromegaly
Enlargement of many skeletal structures, including the extremities, nose, forehead, and jaw
Adenoma
Benign tumor of a gland
Adrenal/o; adren/o
Adrenal
Adrenalectomy
Excision of the adrenal gland
Andr/o
Male; man
Androgen
Substance producing male characteristics such as the hormone testosterone
Calc/o
Calcium
Hypercalcemia
Excessive amounts of calcium in the blood
Crin/o
To secrete
Endocrinologist
Specialist in the study of the diagnosis and treatment of disorders of the endocrine glands and their hormones
Endocrinology
The study of the diagnosis and treatment of endocrine disorders
Estr/o
Female
Estrogen
Female sex hormones
Gluc/o
Sugar
Glucogenesis
Production of sugar
Gluconeogenesis
Production of sugar from fats and proteins
Glyc/o
Sugar
Glycolysis
Breakdown of sugars
Hyperglycemia
Excessive amounts of sugar in the blood
Hypoglycemia
Deficient amounts of sugar in the blood
Glycogen/o
Glycogen (storage form of sugar)
Glycogenolysis
Breakdown of glycogen to form glucose
Gonad/o
Gonads; sex glands (testes and ovaries)
Hypergonadism
Condition characterized by excessive secretion of gonadal hormones (resulting in early sexual development)
Gynec/o
Woman
Gynecomastia
Abnormal enlargement of the male breast
Home/o
Same
Homeostasis
A balanced yet sometimes varying state
Insulin/o
Insulin
Hypoinsulinism
Condition characterized by decreased amounts of insulin secretion (resulting in hyperglycemia)
Kal/o
Potassium
Hyperkalemia
Excessive amounts of calcium in the blood
Natr/o
Sodium
Hyponatremia
Deficient amounts of sodium in the blood
Pancreat/o
Pancreas
Pancreatogenic
Produced by the pancreas
Parathyroid/o
Parathyroid gland
Hyperparathyroidism
Condition characterized by excessive secretion of parathormone (resulting in loss of calcium from the bone)
Pituitar/o
Pituitary gland
Panhypopituitarism
Condition characterized by a deficiency of all pituitary hormones (resulting in dwarfism and a deterioration of secondary sex characteristics)
Thyr/o ; thyroid/o
Thyroid gland; shield
Euthyroid
Normal thyroid gland
Eu-normal good
Hyperthyroidism
Condition characterized by excessive secretion of thyroid hormones (resulting in goiter, enlarged thyroid gland, and exophthalmos, an abnormal protrusion of the eyes)
Thyroiditis
Inflammation of the thyroid gland
Thyrotomy
Process of cutting into the thyroid gland
Ure/o
Urea (end product of protein breakdown, found in urine)
Antidiuretic hormone
A hormone that prevents loss of excessive amounts of urine
-assay
Analysis of a mixture to identify its contents
Radioimmunoassay
Blood test used to identify hormonal levels in blood plasma. The hormones are labeled with a radioactive substance
-crine
To secrete
Endocrine hormones
Hormones secreted by the endocrine glands into the blood stream
Exocrine glands
Glands that secrete chemicals into ducts
-dipsia
Thirst
Polydipsia
Excessive thirst
-physis
To grow
Adenohypophysis
Another name for anterior pituitary gland. So named bc the anterior pituitary is made of glandular tissue
Neurohypophysis
Another name for posterior pituitary gland. The root indicates that the posterior pituitary is made up of neural tissue
-tropic
Stimulating
Adrenocorticotropic hormone (ACTH)
Pituitary hormone that stimulates the adrenal cortex to produce and secrete its own hormones
Gonadotropic hormone
Pituitary hormone that stimulates the gonads to produce and secrete their own hormones
Somatotrophic hormone
Pituitary hormone that stimulates growth of body tissues
Somat/o-body
Oxy-
Sharp; quick
Oxytocin
Pituitary hormone that quickens childbirth by causing uterine contractions
Tocin-labor
ACTH
Adrenocorticotropic hormone
ADH
Antidiuretic hormone
Ca
Calcium; cancer
FSH
Follicle stimulating hormone
GH
Growth hormone
K
Potassium
LH
Luteinizing hormone
MSH
Melanocyte-stimulating hormone
Na
Sodium
OT
Oxytocin
P
Phosphorus
PRL
Prolactin
PTH
Parathyroid hormone (parathormone)
RIA
Radioimmunoassay
T3
Triiodothyronine
T4
Thyroxine
TFT
Thyroid function tests
TRH
Thyrotropin-releasing hormone
TSH
Thyroid stimulating hormone
Immun/o
Safe
Hormones
Powerful chemicals secreted by the endocrine system
Endocrine system consists of
Hypothalamus Pituitary, thyroid Parathyroids, adrenals Pineal and pancreas Glands secrete hormones into the bloodstream for delivery to the target organ.
Exocrine glands
Secrete chemicals into ducts which then deliver secretions to the target site. Sweat glands
The pancreas
Has both endocrine and exocrine functions. Other endocrine glands have no ducts
Central endocrine glands are
Hypothalamus and pituitary
Peripheral endocrine glands
Thyroid Pineal Parathyroids Pancreas Adrenals
Neurohormones
Hormones secreted from neural tissue instead of glandular tissue. Produced by the hypothalamus
Tropic hormones
Neurohormones that stimulate the anterior pituitary to secrete its own hormones
Hypothalamus also secretes
Antidiuretic hormone
And oxytocin
These are not tropic hormones; they do not cause the posterior pituitary to release other hormones
Infundibulum
Stalk that the pituitary gland hangs from
Anterior pituitary secretes seven hormones
5 tropic hormones: ACTH- Growth hormone GH TSH FSH LH And prolactin and MSH
Posterior pituitary
Stores and secretes
ADH Antidiuretic hormone (vasopressin)
OT oxytocin
Isthmus
Separates thyroid into right and left lobes
Thyroid
In throat area
Produces t3 and t4 which regulate metabolic rate and increase energy production
Secretes calcitonin which regulates blood calcium levels
Parathyroid glands
4 glands, 2 on each of the thyroid lobes. Secrete parathyroid hormone also called parathormone. PTH contributes to the regulation of calcium and phosphorus
Adrenal glands
Two parts: adrenal cortex and adrenal medulla
Adrenal cortex secretes 3 groups of hormones
Mineralocortoids-aldosterone is most important. Regulates sodium and potassium.
Glucocortoids-cortisol is most important.
Sex hormones-estrogens and androgens
Adrenal medulla
Produces adrenaline and noradrenaline (epinephrine and norepinephrine)
Collectively called catecholamines
Pineal gland
Located deep I the brain and secretes melatonin
Pancreas
Lies near stomach
Exocrine and endocrine functions
Endocrine functions are to produce insulin and glucagon
Insulin converts glucose into its storage form, glycogen and stim absorption of sugar by body cells
Glucagon reconverts the glycogen into glucose when the body needs sugar