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.
Didn't know it?
click below
Knew it?
click below
Don't know
Remaining cards (0)
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

Muscle O I A

Muscular System Origin, Insertions, and Action

Origin: Occipital Bone and Upper Ligamentum Nuchae Trapezius I
Insertion: Lateral and posterior 1/3rd of Clavicle Trapezius I
Action: From above, elevate the shoulder girdle; From below, hyperextend the neck Trapezius I
Origin: ligamentum nuchae Trapezius II
Insertion: top of the acromion process Trapezius II
Action: Force couple with Trapezius IV to upwardly rotate the scapula Trapezius II
Origin: T1-T4 Trapezius III
Insertion: Upper margin of the spine of the scapula Trapezius III
Action: Adduction of the scapula Trapezius III
Origin: T5-T12 Trapezius IV
Insertion: Root of the spine of the scapula Trapezius IV
Action: Upward rotation of the scapula with Trapezius II; alone- depress the scapula Trapezius IV
Origin: Posterior surface of ilium between crest, posterior gluteal line and anterior gluteal line Gluteus Medius
Insertion: Oblique ridge and dorso-lateral surface of the greater trochanter Gluteus Medius
Action: Abducts with gluteus minimus; posterior fibers ER Gluteus Medius
Origin: Lateral condyle and upper 2/3rds of the lateral surface of the tibia Tibialis Anterior
Insertion: Plantar surface of base of the 1st metatarsal and medial surface of 1st cuneiform Tibialis Anterior
Action: Dorsi-flexion of ankle; supination (Adduction and Inversion) of foot Tibialis Anterior
Origin: Iliac crest and iliolumbar ligaments (ligaments connects iliac crest w/ transverse processes L4-L5) Quadratus Lumborum
Insertion: Last rib and the transverse processes of the upper four lumbar vertebrae. Quadratus Lumborum
Action: Bilateral they depress the ribs; one side alone produces ipsilateral flexion or stabilizes the pelvis when the ipsilateral foot is off the floor. Quadratus Lumborum
Origin: Transverse and costal processes of C2-C7 Scalenes - Anterior, Middle and Posterior
Insertion: Superior surface of rib 1 Scalenes - Anterior and Middle
Insertion: Superior surface of rib 2 Posterior Scalene
Action: From above, elevates the ribs; From below, forward flex neck; one side alone contract to ipsilaterally flex the neck. Scalenes - Anterior, Middle and Posterior
Origin: External and inferior borders of ribs 5-12 External Abdominal Oblique
Insertion: Via aponeurosis of the rectus abdominus to the linea alba from the ribs to the pubis, and anterior 1/2 of iliac crest External Abdominal Oblique
Action: Together - Compresses the abdomen and flexes the trunk; one side (force couple with contralateral internal oblique) acting from above contralaterally rotates and flexes lumbar vertebra to lift pelvis; Below rotates and flexes trunk. External Abdominal Oblique
Origin: Inner margins of the pubis Pubococcygeus
Insertion: Coccyx and median raphe (ligament where muscles attach to each other) Pubococcygeus
Action: Assists iliococcygeus and coccygeus to elevate and retract anus; medial fibers from the pubovaginalis and puboanalis and act as the sphincter urethrae Pubococcygeus
Origin: Outer surface or upper 9 ribs at the side of the chest. Serratus Anterior
Insertion: Anterior surface of the upper veterbal border through inferior angle of the scapula. Serratus Anterior
Action: Upper 1-4, 5 bands attaching to upper vertebral border abduct the scapula; Lower (4, 5-9) attached to inferior angle upwardly rotate; Together they hold the vertebral border of the scapula against the ribs Serratus Anterior
Created by: 1519275428



Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!

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