Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.


Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.

Remove ads
Don't know
Know
remaining cards
Save
0:01
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
Retries:
restart all cards




share
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Bio 203 muscular

Muscular System review

QuestionAnswer
cardiac action potential *sodium enters/depolarization to threshhold *thershold opens vgate sodium, more sodium enters *Sodium gates close, K channels open *PLATEAU
plateau is due to influx of Ca which is + ion, which flows in from ECF to ICF to this effect maintains/extends AP time by keeping cell at +20mV
repolarization of cardiac muscle occurs due to due to closure of Ca channels and K outflow when additional Vgate K channels open
smooth muscle also uses Ca from ECF to effect *digestive/urinary processes to expel
Ca blocking drugs used for anti-HTN: block Ca channels in sm musc of blood vessels --> unable to constrict, therefore vasodilation remains
Beta Blockers will decrease bp bwo decreased CO
heart can switch to anaerobic metabolism by this rxn ADP + creatine kinase --> ATP + creatine
lab test for creatine kinase tells us what if myocardial muscles have died, as evidenced by creatine generated by anaerobic metab prior to death (thereby liberating the enzyme to blood)
CK isoenzymes include sk muscle (CKmm), heart (CK MB), brain (CKbb)
cardiac muscle is loaded with these ATP producing cells mitochondria
*Troponin is released from myocardium @ death *CK released @ myocardium death heart muscle dies and these markers are present
Created by: lorrelaws