Chapter 9 Important Reading Questions

12 terms by TashaNicole 

Create a new folder

Advertisement Upgrade to remove ads

What is the neurotransmitter that causes contraction in skeletal muscle?

acetylcholine

When calcium increases in the cytosol, what happens to tropnin and tropomyosin?

calcium ions bind to the troponin, changing its shape and altering the position of the tropomyosin

What breaks down extra ACh in the synapse?

acetylcholinesterase

What is the purpose of creatine phosphate?

stores energy released from the mitochondria

Rigor mortis is caused when what happens to calcium ions?

increase in membrane permeability to calcium ions

Rigor mortis is casued when what happens to ATP?

decrease in availability of ATP in muscle fibers

What happens to the cross bridges in rigor mortis?

they stay attached

If an individual has MG, what structures are they lacking?

acetycholine receptors

What is the second transmitter, unique to smooth muscles?

norepinephrine

Apart from the 2 neurotransmitters, what else can cause muscle contraction?

hormones, stretching of smooth muscle fibers

What is the function of the intercalated disk?

help join cells and transmit the force of contraction from the cell to cell

What is a syncytium?

network responds to stimulation in an all or none matter

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again

Example:

Reload the page to try again!

Reload

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.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording

Create Set