Chapter 18 - Endocrine System Flashcards
adrenal cortex
outer section of each adrenal gland
adrenal medulla
inner section of each adrenal gland
ovaries
located in lower abdomen of female; produces eggs, estrogen/progesterone secretion
pancreas
located behind stomach; islet cells secrete hormones from the pancreas
parathyroid glands
4 small glands on the posterior of the thyroid gland
pituitary gland
located at base of brain in sella turcica; composed of anterior and posterior lobes
testes
2 glands enclosed in the scrotal sac of a male
thyroid gland
located in the neck on either side of trachea
adrenaline (epinephrine)
secreted by adrenal medulla; increases heart rate and blood pressure, dilates airways
adrenocorticotropic hormone (ACTH)
secreted by anterior lobe of pituitary gland; stimulates adrenal cortex
aldosterone
secreted by adrenal cortex; increases salt reabsorption
androgen
male hormone
antidiuretic hormone (ADH)
increases reabsorption of water by the kidney
calcitonin
decreases blood calcium levels
cortisol
increases blood sugar
estradiol
estrogen secreted by the ovaries
estrogen
female hormone secreted by the ovaries and to a lesser extent by the adrenal cortex
follicle-stimulating hormone (FSH)
stimulates hormone secretion and egg production by the ovaries and sperm production by the testes
glucagon
increases blood sugar by conversion of glycogen to sugar
growth hormone (GH); somatotropin
stimulates growth of bones and soft tissue
insulin
helps glucose to pass into cells and it promotes the conversion of glucose to glycogen
luteinizing hormone (LH)
stimulates ovulation in females and testosterone secretion in males
norepinephrine
increases heart rate and blood pressure
oxytocin (OT)
stimulates contraction of the uterus during labor and childbirth
parathormone (PTH)
increases blood calcium
progesterone
prepares uterus for pregnancy
prolactin (PRL)
promotes milk secretion
somatotropin
growth hormone
testosterone
male hormone secreted by the testes
thyroid-stimulating hormone (TSH); thyrotropin
secreted by the anterior lobe of the pituitary gland; TSH acts on the thryoid gland to promote its functioning
thyroxine (T4)
T4 increases metabolism in cells
triiodothyronine (T3)
increases metabolism in cells
vasopressin
increases water reabsorption and raises blood pressure
catecholamines
hormones derived from an amino acid and secreted by the adrenal medulla
corticosteroids
hormones produced by the adrenal cortex
electrolyte
mineral salt found in blood and tissues and necessary for proper functioning of cells
glucocorticoid
regulates glucose, fat, and protein metabolism
homeostasis
tendency of an organism to maintain a constant internal environment
hormone
substance 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
mineralocorticoid
secreted by the adrenal cortex to regulate mineral salts and water balance in the body
receptor
cellular or nuclear protein that binds to a hormone so that a response can be excited
sella turcica
cavity in the skull that contains the pituitary gland
sex hormones
steroids produced by adrenal cortex to influence male an female sex characteristics
steroid
complex substance related to fats and of which many hormones are made
sympathomimetic
pertaining to mimicking the effect of the sympathetic nervous system
target tissue
cells of an organ that are affected or stimulated by specific hormones
aden/o
gland
adrenal/o
adrenal gland
gonad/o
sex glands
acr/o
extremities
pancreat/o
pancreas
parathyroid/o
parathyroid gland
pituitar/o
pituitary gland; hypophysis
thyr/o
thyroid/o
thyroid gland
andr/o
male
calc/o
calci/o
calcium
cortic/o
cortex, outer region
crin/o
secrete
dips/o
thirst
estr/o
female
gluc/o
glyc/o
sugar
home/o
sameness
hormon/o
hormone
kal/i
potassium
lact/o
milk
myx/o
mucus
natr/o
sodium
phys/o
growing
somat/o
body
ster/o
solid structure
toc/o
childbirth
toxic/o
poison
ur/o
urine
-agon
assemble, gather
-emia
blood condition
- in
- ine
substance
-tropin
stimulating the function of
-uria
urine condition
-megaly
enlargement
eu-
good, normal
hyper-
excessive
hypo-
deficient
oxy-
rapid, sharp, acid
pan-
all
poly-
many or increased
tetra-
four
tri-
three