The ability to receive and respond to a stimulus
The ability to shorten (forcibly) when an adequate stimulus is received
One neuron and all the skeletal muscle cells it stimulates (figure 6.4)
When a long threadlike extension of the neuron, called the nerve fiber or exon, reaches the muscle, it branches into a number of axonal terminals, each of which forms junctions with the sarcolemma of a different muscle cell (figure 6.5)
The gap between the endings of the muscle cells' membrane.
Filled with tissue (interstitial) fluid
A chemical released when the nerve impulse reaches the axonal terminals
Acetylcholine or ACh
The specific neurotransmitter that stimulates the muscle cell.
Defuses across the synaptic cleft and attaches to receptors (membrane proteins), which are part of the sarcolemma.
The "upset" caused by a rushing intake of sodium ions (Na+) through the muscle cell
Please allow access to your computer’s microphone to use Voice Recording.
We can’t access your microphone!
Click the icon above to update your browser permissions and try again
Reload the page to try again!
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Your microphone is muted
For help fixing this issue, see this FAQ.