Structural Component Of Muscle Cell Flashcards
Sarcolemma has 2 types of protein, integral : ______ and sarcogylcan ; _____ : dystrophin and _______
dystroglycan; peripheral, dystrobrevin
Invagination of sarcolemma, with _________ receptor and is nothing but a _________ channel
T-tubule; dihydropridine receptor (DHPR), voltage-gated Ca++
Is the SR and the portion nearest to T-tubule is called ______, which is a site of ______ release
L-tubules; terminal cisternae, Ca++
The L-tubule cistern has ______ receptor which is a ______ channel 2 cistern at each side of L-tubule in skeletal muscle are _____ while ____ in cardiac muscle
Ryanodine receptor (RyR), ligand-gated; triad, diad
In contractile, this it the thick filament with 3 regions and the globular head has _____ and _____ binding site
Myosin; ATP and Actin
Contractile, thin filament made up of _____, ______ and troponin ,,_. The active sites are covered with _______
Actin; Actin, Tropomyosin, I,T,C; Tropomyosin
Regulatory (relaxing), ______ extends actin filament, covers myosin-binding sites, preventing attachment of ____ and _____
Tropomyosin; actin, myosin
Troponin has 3 types. ___ binds with tropomyosin. ___ inhibition of actin and myosin. C has ______ binding sites
T; I; 4 Ca++
Anchors thin filament to the Z line
α-actinin, capZ protein
Determines the elasticity of the muscle, extends from M-Z line and the largest protein
Titin (connectin)
Determines the cytoskeletal integrity by linking ____ bands to plasma membrane
Desmin; Z-bands
Anistrophic, dark, made up of _____
A-band; myosin
Isotropic, light, made up of ____
I-band, actin
lighter side of A-band, no overlap of actin and myosin
H-band
disk in the middle of sacromere
M-line
