Muscle Fiber aka Muscle Cell

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Biology Muscle Flashcards on Muscle Fiber aka Muscle Cell, created by dancedrill on 02/07/2013.
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Flashcards by dancedrill, updated more than 1 year ago
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Created by dancedrill about 11 years ago
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Question Answer
The plasma membrane of a muscle fiber is called? Sarcolemma
The cytoplasm of a sarcolemma is called? Sarcoplam
The sarcoplasm is occupied mainly by long protein bundles called? myofibrils
Myofibrils are about what size in diameter? 1 um
Myofibrils contain an abundance of ? glycogen.
why are myofibrils filled with a lot of glycogen? It provides energy for the cell during heightened levels of exercise.
why are myofibrils filled with a lot of glycogen? It provides energy for the cell during heightened levels of exercise.
What is the function of myoglobin? stores oxygen until needed for muscular activity. red pigmented.
Describe a myoblast multiple muscle fibers that have flattened nuclei pressed against the inside of the sarcolemma.
function of myoblast? their unusual multinuclear condition results from their embryonic development, several stem cells called myoblast. The myoblasts fuse to produce each muscle fiber.
Describe a myoblast multiple muscle fibers that have flattened nuclei pressed against the inside of the sarcolemma.
describe sarcoplasmic reticulum (SR) smooth ER that forms a network around each myofibril. calcium storage. calcium activates the muscle contraction process.
function of myoblast? their unusual multinuclear condition results from their embryonic development, several stem cells called myoblast. The myoblasts fuse to produce each muscle fiber.
Describe T tubules tubular infolding of the sarcolemma which penetrate through the cell and emerge on the other side. Release of Ca2+ into cell.
function of myoblast? their unusual multinuclear condition results from their embryonic development, several stem cells called myoblast. The myoblasts fuse to produce each muscle fiber.
Describe Triad a T tubule and two terminal cisterns
function of myoblast? their unusual multinuclear condition results from their embryonic development, several stem cells called myoblast. The myoblasts fuse to produce each muscle fiber.
Terminal cisternae the dilated ends of sarcoplasmic reticulum adjacent to a T tubule.
function of myoblast? their unusual multinuclear condition results from their embryonic development, several stem cells called myoblast. The myoblasts fuse to produce each muscle fiber.
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