muscle contraction terms Flashcards
What is the messenger that tells your muscles it’s time to move?
acetylcholine
The places where neurons connect and communicate with each other
synapse
helps nerves talk and connect to each other
neurotransmitter
cell membrane that surrounds a cell
sarcolemma
when an energy change occurs inside a cell
depolorization
storage area for which your muscles retain and store calcium
SR
a tiny bubble in your cells that carries and delivers important stuff, such as neurotransmitters, helping messages move around in your body
vesicle
tiny tunnels in your body that helps to get all parts of the muscle to contract and move together
t-tubules
sensors in your body that catch signals, such as messages from nerves, allowing your body to understand and respond to what’s happening around it
receptors
long, thin wire that helps messages travel from one nerve cell to another in your body
axon
motor protein that converts chemical energy to mechanical energy
myosin
stretchy part in your muscles that helps them squeeze together when you move or play
actin
a switch in your muscles that helps the muscles move and contract
troponin
a protein that regulates muscle contraction and relaxation
tropomyosin
the basic unit of a muscle
sarcomere
