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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
the process of cell division that divides the cytoplasm of the zygote among blastomeres is called...
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
which hormone is released by heart muscle in response to excessive chamber volumes
natriuretic peptides (ANP and BNP)
which hormone plays a central role in determining the rate of Na+ reabsorption and K+ secretion
which period of gestation is characterized by rapid fetal growth and fat deposition?
the 3rd trimester
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
hemolytic disease of the newborn may result if...
an Rh-negative mother carries an Rh positive fetus
in cardiac muscle, the fast depolarization phase of the action potential is the result of...
increased membrane permeability to SODIUM (NA+) ions
the long plateau phase of the cardiac muscle action potential is due to...
calcium channels remaining open
where does the reaction between thyroglobulin and iodine take place?
in the lumen of the thyroid follicle
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...
the link b/t a first messenger and a 2nd messenger in a cell that responds to peptide hormones is usually...
platelets are pinched off from giant multinucleated cells in the bone marrow called...
the extrinsic pathway of coagulation is initiated by the...
release of tissue factor (TF) by damaged endothelium
when the diaphragm and external intercostals contract...
the volume of the thoracic cavity increases
what factor would INCREASE the amount of oxygen released by hemoglobin to peripheral tissues
decreased pH (more acidic)
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 layer b/t the tunica media and the tunica externa in a large artery is the...
external elastic membrane
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
one mechanism the kidney uses to raise systemic BP is to...
increase the secretion of renin by the juxtaglomerular complex
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...
a drug that blocks the action of carbonic anhydrase in parietal cells would result in...
a higher pH during gastric digestion
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
the ability to form concentrated urine depends on...
the collecting duct and the loop of Henle/nephron loop
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