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hypothalamus
major controller of endocrine glands; secretes releasing & inhibiting hormones to control activity of anterior pituitary; produces ADH & oxytocin to be released by posterior pituitary
pituitary gland
also called the hypophysis; located in the sella turcica of the sphenoid bone; connected to the hypothalamus via the infundibulum; consists of two lobes
anterior pituitary
lobe of the pituitary also called the adenohypophysis; consists of 3 divisions
posterior pituitary
lobe of the pituitary also called the neurohypophysis; consists of the pars nervosa
pineal gland
gland which lies in the posterior portion of the roof of the third ventricle; produces melatonin
thyroid gland
gland which lies anterior to the thyroid cartilage of the larynx; consists of two lobes connected by isthmus; produces T3, T4 hormones
parathyroid glands
4 glands embedded in the posterior surface of the thyroid gland; produces PTH
adrenal glands
glands which lie along the superior border of each kidney; consists of the cortex & medulla
pancreas
lies between the inferior border of the stomach & proximal portion of small intestine
thymus
produces thymosins
colloid-filled follicles
hollow spheres lined by cuboidal epithelium, containing viscous colloid in cavity
C cells
cells between thyroid follicles which produce calcitonin
Chief (principal) cells
cells of the parathyroid that produce PTH
zona glomerulosa
2 in the diagram; outer layer of the adrenal cortex which produces mineralocorticoids AKA aldosterone
zona fasiculata
3 in the diagram; middle layer of the adrenal cortex which makes up 78% of it; produces glucocorticoids AKA cortisol
zona reticularis
4 in the diagram; inner layer of adrenal cortex which produces androgens
adrenal medulla
5 in the diagram; produces epinephrine & norepinephrine
pancreatic acini
#1 in diagram; clusters of exocrine cells which produce digestive enzymes
pancreatic islets
2 in the diagram; endocrine cells producing insulin, glucagon, & somatostatin
neutrophils
make up 50-70% of WBCs; multilobed nucleus
eosinophils
make up 2-4% of WBCs; bilobed nucleus; red cytoplasmic granules
basophils
make up less than 1% of WBCs; bilobed nucleus; purplish-black cytoplasmic granules
lymphocytes
make up 20-30% of WBCs; large spherical nucleus
monocytes
make up 3-8% of WBCs; kidney-shaped nucleus
right atrium
right ventricle
left atrium
left ventricle
interventricular septum
tricuspid valve
valve that lets blood from right atrium into right ventricle
pulmonary valve
semilunar valve that lets blood from right ventricle to pulmonary trunk & arteries
bicuspid valve
AKA the mitral valve; lets blood from left atrium to left ventricle
aortic valve
semillunar valve which lets blood from left ventricle into aorta
chordae tendineae
tiny white collagenic cords which anchor the cuspts of the tricuspid valve to the ventricular walls
papillary muscles
small bundles of cardiac muscle that project from the myocardial wall & connect to chordae tendineae
epicardium
AKA visceral pericardium; outer layer of heart wall
myocardium
muscular wall of heart; thickest layer
endocardium
inner surfaces of heart including valves
base of heart
apex of heart
moderator band
bundle of cardiac muscle fibers connecting the interventricular septum to the anterior papillary muscles
superior vena cava
large vein that brings oxygen-poor blood from the upper part of the body to the right atrium
inferior vena cava
brings oxygen poor blood from the lower part of the body to the right atrium
coronary sinus
enlarged vessel on the posterior aspect of the heart that empties blood into the right atrium
right coronary artery
left coronary artery
circumflex artery
anterior interventricular artery
pulmonary veins
The four veins that return oxygenated blood from the lungs to the left atrium of the heart.
fossa ovalis
a remnant site of foramen ovale in fetus; right atrium
pulmonary trunk
branches into R & L pulmonary arteries
ligamentum arteriosum
remnant of ductus arteriosus in fetus
parietal pericardium
portion of pericardium close to the chest wall
intercalated discs
monocytic leukemia
a form of leukemia in which there is dominance/large amounts of monocytes
pancreatic islet (islet of Langerhans)
clusters in pancreas tissue filled with endocrine cells (alpha (A) cells and beta (B) cells); usually a lighter color
Romburg (Balance) test
test done by standing flat with feet both on the ground and eyes closed, then again with one leg up; tests to see if static equilibrium receptors are working
vertigo
sensation of circular motion either of oneself or external objects; severe cases may be accompanied by nystagmus