Advertisement Upgrade to remove ads


Orbicularis oris

Kissing Muscle

Masseter & Temporalis

Two muscles that close (elevate) the mouth


Paired muscle that flexes head and rotates head to side


Extends head

Pectroalis major

Adducts and flexes arm


Anterior portion flexes arm; lateral portion abducts arm

Serratus anterior

Abducts scapula and rotates it upward (boxer's muscle).

Rectus abdominis

Flexes vertebral column and compresses abdomen

External & Internal Obliques

Two muscle pairs that flex vertebral column, compress abdomen, and laterally flex vertebral column

Transversus abdomen

Compresses abdomen only

Teres major & Latissimus dorsi

Extends, adducts, and rotates arm.


Posterior portion extends arm; lateral portion abducts arm


Superior portion elevates scapula, middle portion adducts scapula, inferior portion depresses scapula

Triceps brachii

extends forearm at elbow and extends arm

Biceps brachii

Flexes forearm at elbow and flexes arm

Flexor Carpi Ulnaris

Flexes and adducts hand


Flexes forearm and pronates and supinates forearm

Rectus Femoris

Extends leg at knee and flexes thigh at hip

Vastus intermedius, lateralis, and medialis

Three muscles that extend leg only


Flexes leg and flexes, abducts, and laterally rotates thigh (allows us to flex and cross the legs).


Adducts thigh and flexes leg

Gluteus medius

abducts thigh

Tensor fasciae latae

Flexes and abducts thigh

Gluteus maximus

extends thigh

Biceps femoris, Semitendinosus, and Semimembranosus

Three muscles that flex leg and extend thigh


Plantar flexes foot and flexes leg


Plantar flexes foot only

Tibialis anterior

Dorsiflexes and inverts foot

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


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.

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