muscle tissue Flashcards
fasicle
tubes, group of muscle cells
muscle cell (fiber)
multiple nuclei, striated
a bicep is an
organ
sarcolemma
Muscle fiber has a phospholipid bilayer, cell membrane
myofibrils (organelle)
tubes full of contractile proteins
hypertrophy
An enlargement of existing muscle
fibers
sacroplasm
muscle cell cytoplasm and contains organelles like
mitochondria and a large amount of glycogen for energy production and
myoglobin for oxygen storage.
sarcoplasmic reticulum
modified endoplasmic reticulum (stores calcium Ca++)
-neuron triggers SR to release calcium
sacromeres
basic unit of contraction in skeletal muscle
myosin
the main component of thick filaments, functions as
a motor protein. (contractile protein)
actin
the main component of thin filaments, connects to the
myosin for the sliding together of the filaments. (contractile protein)
tropomyosin
keeps us from spasms (regulatory protein)
troponin
Protein that sits on top of tropomyosin, calcium binds to (regulatory protein)
titin
elastic protein that helps a sarcomere return to its
resting length after a muscle has contracted or been
stretched. (structural protein)
dystrophin
attaches tubes of contractile proteins to cell membrane