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A&P Lab Final
Terms in this set (31)
myofilament composed of the contractile and the regulatory proteins troponin, and tropomyosin
a rapid series of changes in the membrane potential of the muscle fiber sacrolemma
series of events during which actin and myosin bind and detach cyclically resulting in generation of tension during a contraction
the amount of tension generated by a contraction is influenced by how much the thick and thin filament overlap when the muscle fiber is at rest
which hormone does the thyroid gland secrete?
thyroxine, triiodothyronine, calcitonin
which hormone does the pancreas secrete?
insulin and glucagon
which hormone does the adrenal cortex secrete?
aldosterone and cortisol
which hormone does the adrenal medulla secrete?
epinephrine and norepinephrine
which defines S1?
the first heart sound. caused by the closure of the mitral and tricuspid valves at the beginning of the ventricular systole
which defines S2?
the second heart sound. caused by the closure of the aortic and pulmonary valves at the beginning of the ventricular diastole
which defines pulse point?
point on the body where an artery can be palpated with the fingertips to determine the rate, rhythm, and regularity of the heart
which defines respiratory capacity?
the sum of two or more respiratory volumes
which defines total lung capacity?
total amount of exchangeable and nonexchangeable air in the lungs
which defines functional residual capacity?
volume of air in the lungs after a tidal expiration
what defines vital capacity?
maximum amount of exchangeable air that can be ventilated with forced inspiration and expiration
which defines tidal volume?
volume of air exchanged with normal quiet breathing
a restrictive disease causes?
a obstructive disease causes?
which defines pancreatic islet?
endocrine cells of the pancreas that secrete hormones such as insulin into the bloodstream
which defines digestive enzymes?
enzymes produced by organs of the digestive system that catalyze reactions that break down food chemically into smaller molecules
which defines chemical digestion?
process by which the chemical bonds between food molecules are broken into chemical reactions
which defines emulsification?
the first step in the lipid digestion, it breaks up the fat globules into smaller pieces with the help of bile salts
which defines bile?
fluid produced by the liver and stored in the gallbladder that contains bile salts which are amphipathic molecules that emulsify fats in the small intestine and aid in their digestion
which defines glomerular filtration?
process by which the glomeruli produce the filtrate that enters the proximal tubule
wich defines glomerular filtration rate?
the rate at which the glomeruli produce filtrate (avg. 120 mL/min)
which defines tubular reabsorption?
process by which he nephron and collecting ducts return water and solutes to the blood
which defines tubular secretion?
process by which the nephron and collecting ducts add substances to the filtrate
which defines prostate gland?
a small gland that surrounds the neck of the bladder and urethra. produces seminal fluid
which defines ovaries?
female gonads that produce female gametes and hormones
which defines cervix?
the inferior, narrower portion of the uterus
which hormone initiates the changes in puberty?
the shedding and bleeding of the decider during menses is directly cause by low levels of ?
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