How can we help?

You can also find more resources in our Help Center.

105 terms

final

STUDY
PLAY
what is not an action of estrogen?
it does NOT mimic the symptoms of menopause
gastrulation is the process of...
developing 3 germ layers
which hormones oppose progesterone and induce labor?
oxytocin and estrogen
when the pH of ECF drops, the protein buffer system will manipulate an AA by...
binding an H+ to the amino group, raising the pH
Calcium reabsorption by the kidneys is promoted by the hormone...
PTH
what muscle moves the testes toward the body
cremaster muscle
sperm production occurs in the ...
seminiferous tubules
the primary follicle develops from the...
primordial follicle
the extraembryonic membrane that forms the FETAL portion of the placenta
chorion
the process of cell division that divides the cytoplasm of the zygote among blastomeres is called...
cleavage
what causes a prominent bulge in the surface of the ovary?
tertiary follicle
the ions in highest concentration in the ECF are...
sodium, chloride, bicarbonate
the extraembryonic membrane that forms a fluid-filled sac is the...
amnion
the release of ANPs from the heart will cause the body to...
decrease ECF, AND excrete sodium ions (both)
differentiation among blastomeres is the result of...
an unequal distribution of regulatory molecules in the cytoplasm of the ovum
the primary role of the carbonic-acid-bicarbonate buffer system is to...
limit pH changes by organic and fixed acids
the pituitary hormone that stimulates interstitial cells to secrete testosterone is...
LH
the principle cation in ICF is
POTASSIUM
sperm develop from stem cells called
spermatagonia
a blastocyst is a...
hollow ball of cells
exchange b/t the 2 main subdivisions of ECF occurs primarily at the...
capillaries
the surge in LH that occurs during the middle of the ovarian cycle triggers...
ovulation
which glands secrete fructose to nourish the sperm?
seminal vesicles/glands
during amphimixis
the male and female pronuclei fuse
which hormone is released by heart muscle in response to excessive chamber volumes
natriuretic peptides (ANP and BNP)
in response to respiratory alkalosis...
the kidneys retain more H+ ions
ICF is found only within...
the cells of the body
which hormone plays a central role in determining the rate of Na+ reabsorption and K+ secretion
aldosterone
the penetration of the endometrium by the blastocyst is referred to as...
implantation
which period of gestation is characterized by rapid fetal growth and fat deposition?
the 3rd trimester
the erectile tissue that surrounds the urethra is the...
corpus spongiosum
when water is lost in the ECF, but electrolytes are retained...
osmosis moves water from the ICF to the ECF
what is the order that sperm pass from the testis to the urethra?
epididymis, vas deferens, ejaculatory duct, urethra
hypoventilation leads to...
respiratory acidosis
the thick muscular layer of the uterus is the...
myometrium
sperm cannot fertilize an oocyte until they...
undergo capacitation
interstitial cells produce...
androgens
what is the best description for B lymphocytes?
produce antibodies in response to antigens
what controls the release of glucocorticoids?
ACTH
hemolytic disease of the newborn may result if...
an Rh-negative mother carries an Rh positive fetus
Acetylcholine slows the heart because...
it opens potassium ion channels in SA node cells
the chief differences b/t plasma and interstitial fluid involves the...
concentration of proteins
blood returning from the systemic circuit first enters the...
right atrium!
the pulmonary semilunar valve prevents backward flow into the...
right ventricle
steroid hormones...
bind to receptors in the nucleus of their target cells
contractions of the papillary muscles...
prevent the AV valves from reversing into the atria
what stimulates milk production?
PRL (prolactin)
each hemoglobin molecule contains...
4 iron atoms
liver cells respond to growth hormone by releasing hormones called...
somatomedins
the visceral pericardium is the same as...
the epicardium
all circulating RBCs originate in the...
red bone marrow
in cardiac muscle, the fast depolarization phase of the action potential is the result of...
increased membrane permeability to SODIUM (NA+) ions
the c-cells of the thyroid gland produce...
calcitonin
the long plateau phase of the cardiac muscle action potential is due to...
calcium channels remaining open
RBC production is regulated by the hormone...
erythropoietin (EPO)
where does the reaction between thyroglobulin and iodine take place?
in the lumen of the thyroid follicle
what stimulates egg development in the ovaries?
FSH (Follicle-stimulating hormone)
Shelly has a hormone-secreting tumor of the suprarenal gland that is causing her to have a deep voice and to grow extensive body hair. This tumor involves cells of the...
zona reticularis
increased activity of phosphodiesterase in a target cell would decrease its level of...
cAMP
the conversion of fibrinogen to fibrin is catalyzed by the enzyme...
thrombin
the waste product bilirubin is produced from...
heme molecules lacking iron
the link b/t a first messenger and a 2nd messenger in a cell that responds to peptide hormones is usually...
a G-protein
drugs that block the beta-one andrenergic receptors will...
decrease heart rate
platelets are pinched off from giant multinucleated cells in the bone marrow called...
megakaryocytes
the extrinsic pathway of coagulation is initiated by the...
release of tissue factor (TF) by damaged endothelium
the first heart sound ("lub")...
is associated w/ the closing of the mitral valve
the innermost layer of the blood vessel is the...
tunica intima
compared to arteries, veins...
have thinner walls
when the diaphragm and external intercostals contract...
the volume of the thoracic cavity increases
most of the lymph returns to the venous circulation by way of the...
thoracic duct
the 3 main APC's (antigen presenting cells) are...
macrophages, dendritic cells, B cells
most of the carbon dioxide in the blood is transported as...
bicarbonate ions
the release of endogenous pyrogen (interleukin-1) by active macrophages would...
produce a fever
what factor would INCREASE the amount of oxygen released by hemoglobin to peripheral tissues
decreased pH (more acidic)
the blood colloid osmotic pressure depends mostly on the...
concentration of plasma proteins
the cells responsible for the circulating immunoglobulins (antibodies) are...
plasma cells
air moves out of the lungs when the pressure inside the lungs is...
greater than the pressure in the atmosphere
stimulation of the aortic baroreceptors reflexly results in...
increased activity by the parasympathetic nervous system
the cells that kill cancer cells or virally infected cells are the...
NK cells
the layer b/t the tunica media and the tunica externa in a large artery is the...
external elastic membrane
for MAXIMUM loading (saturation) of hemoglobin w/ oxygen at the lungs, the...
pO2 should be high
when an antigen is bound to a class 1 MHC protein, it can stimulate a...
cytotoxic T-cell
elastic fibers in the walls of these vessels are stretched during systole
arteries
immunity is provided by...
B and T memory cells
how will respiratory minute volume be affected if tidal volume is kept constant and respiratory rate is increased?
respiratory minute volume will increase
elevated levels of the hormones ANP and BNP will produce increased...
salt and water loss through the kidneys
all types of T-cells are MHC restricted which means...
T-cells cannot recognize antigen unless it is presented by an MHC receptor
chief cells secrete...
pepsinogen
in transamination, the amino group of an AA is ...
transferred to a keto acid
the process of filtration is driven by...
blood hydrostatic pressure
chloride ion is reabsorbed in the ascending limb by...
cotransport with Na and K ions
an intestinal hormone that stimulates the gall bladder to release bile is...
cholecystokinin
one mechanism the kidney uses to raise systemic BP is to...
increase the secretion of renin by the juxtaglomerular complex
the overall function of the TCA cycle is to...
complete the oxidation of pyruvate
energy released by the electron transport chain is used to pump H+ ions into which location?
mitochondrial intermembrane space
the part of the digestive tract that plays the primary role in the absorption of nutrients is the...
jejunum
a drug that blocks the action of carbonic anhydrase in parietal cells would result in...
a higher pH during gastric digestion
most of the energy from glycolysis is...
in pyruvate
CO2 is released during which stages of cellular respiration?
oxidation of pyruvate to acetyl coA and the TCA cycle
if the plasma pH gets too high, the collecting duct will...
secrete bicarbonate ions into the tubular fluid and pump H+ into peritubular fluid
double sheets of peritoneal membrane that suspend the visceral organs and carry nerves, lymphatics, and blood vessels
mesenteries
the ability to form concentrated urine depends on...
the collecting duct and the loop of Henle/nephron loop
what cleaves trypsinogen into its active form?
enteropeptidase
podocytes are...
large cells that wrap around glomerular capillaries
the whole point of cellular respiration is...
to make ATP!