Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

Username is available taken
show password


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.
Don't know
remaining cards
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:
restart all cards
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

Muscles by SCI

key muscles by segmental innervation

C1-C2 Facial muscles, partial SCM, capital muscles
C3 SCM, partial diaphragm, upper trapezius
C4 Diaphragmatic, partial deltoid, SCM, upper trapezius
C5 Deltoid, biceps, rhomboids, brachioradialis, teres minor, infraspinatus, serratus anterior
C6 Extensor carpi radialis, pectoralis major (clavicle part), teres major, supinator, serratus anterior, weak pronator
C7 Triceps, flexor carpi radialis, latissimus, pronator teres
C8 Flexor carpi ulnaris, extensor carpi ulnaris, pt. may have some hand intrinsics.
T1-T8 Hand intrinsics, top half of intercoastals, pectoralis major (sternal part).
T7-T9 Upper abdominals
T9-T12 Lower abdominals
T12 lower abdominals, weak quadratus lumborum
L2 Iliopsoas, weak sartorius, weak adductors, weak rectus femoris.
L3 Sartorius, rectus femoris, adductors
L4 Gluteus medius, tensor fascia latae, hamstrings, tibialis anterior
L5 Weak gluteus maximus, long toe extensors, tibalis posterior
S1 Gluteus maximus, ankle plantar flexors (Gastrocnemius, soleus)
S2 Anal Sphincter
Created by: lcurtis