AP Flashcards

6516639012	The entire length of the thick filament going to be referred to as the	A-band	0
6516641199	a proteinasious disc	zline	1
6516647543	so the a band of the sarcomere extendst entire lenghth of the	thick filament	2
6516659736	part that extends from the ends of the thick filament to the zdics	I band	3
6516660931	i band consists all of	thin filament	4
6516667597	each sarcomere has	1 a band 2 i bands 2 z-dics	5
6516681828	Right in the center of the sarcomere have something called the	M-Line	6
6516685401	Is another proteinnasious disc	M-Line	7
6516688885	Is what anchors the thick filament to the center of the sarcomere	M-Line	8
6516694064	the z disc and m line both	anchor the thin filaments to the ends of the sarcomere	9
6516736673	Extends from the ends of 1 filament over to the begining of the next filament	H-Zone	10
6516738196	In H zone only have	thick filaments	11
6516740102	i zone only have	thin filaments	12
6516746395	theres one other protien in a sarcomere	titin	13
6516748789	IT is a really loose molecule	titin	14
6516750369	titin constists of 30 thousand	amino acids	15
6516752333	Highlyy strechy like a rubber band	titin	16
6516757662	If i overstretch a sarcomere it will	elastically return to its resting length. (titin)	17
6516761737	a sarcomere can stretch beyond its	resting legnth and elastically rebound	18
6516765391	connective titin extends from	1 z disc to the next z disc as well	19
6516775114	thin filament transects the	zdisc goes in both direction	20
6516780038	We can link our sarcomeres toghther	a band i band h zone m line	21
6516806171	In a zdisc the thin filament extends	this direciton and that direciton	22
6516822807	we have lots of lots of what in a sarcomere	thick filaments	23
6516834269	there is a what region that overlap between thick and thin filaments	interactional relationship	24
6516838877	Each thick filament is surrounded by how many thin filaments	6	25
6516844249	again this is a single thickness if you add those up youll notice that there are	6 thin filaments surrounding that.	26
6516848111	Globosin mysoin heads in a sarcoere are radiating out in all diff	direcitions	27
6516851677	this globular head on this thick filament will	radiate out in all diff directions. and attatch to all 6 of the thin filaments.	28
6516860539	a single thick filament is much more thick then a	thin filament	29
6516865096	and this is just 1 single muscle cell im gonna have lots of	myofibrils	30
6516873317	proteins themselves arnt shortening rather thin filaments sliding past thick filaments we refer to this as the	slight pull mechanism	31
6516874686	as a result of the thin filament pulling on the thin filament youull knotice now its gonna be these	globular myosin heads locking onto this actin	32
6516889001	globular myosin heads locking onto actin form the	power and recover strokes to pull these up	33
6516894312	sarcomeres are shortening thin filaments are sliding past the thick filaments	slight pull mechanism	34
6516904850	slight pull mechanism what shortens	sarcomeres will shorter all sarcomeres in myofibrils will shortern the myoribril shortens when all the myofibrils shorten in a muscle the muscle shortens	35
6516918116	What region would you expect to shorten as contraction occurs	both i bands the h zone also	36
6516941013	what lay side by side in a relaxed muscle	actin, myosin, and myofilaments	37
6516944383	in relaxed muscle what are at max width	h band izone	38
6516950522	during contraction the actin and myosin myofilament interact with the	actin slide toward the center of the myosin fliament as a result the sarcomere shortens.	39
6516954592	In a fully contracted muscle the ends of the actin myofilaments overlap the	h zone dissapear and the i band becomes very narrow	40
6516980446	when muscle relaxes we reomove calsium from the	tropoin c	41
6516985385	when myosin heads can no longer bind to active site	muscle returns to resting	42
6516991932	muscle contraciton requires what to shorten	atp	43
6516994040	muscle contraction	actin process	44
6516995214	relaxation	pasive process	45
6516999552	doesnt require atp for it to be	linked	46
6517003234	relaxation block all of the	myosin heads from being linked to binding site	47
6517040352	1 single muscle cell gonna have lots of	myofibrils in it	48
6517054954	the ends of the actin myofilaments overlap in a	fully contracted muscle	49