muscles

19 terms by bowers1234 

Ready to study?
Start with Flashcards

Create a new folder

Advertisement Upgrade to remove ads

origins and actions

Rhomboid Major

Action: adduct scapula (scapulothoracic Joint)
elevate the scapula (STJ)
Downwardly rotate scapula (STJ)

Masseter

Elevates mandible
Assists in protracting the Mandible

Sternocleidomastiod (SCM)

Actions include neck flexion
Lateral Flexion s/s
rotate head o/s
assist in inhalation

Temporalis

elevate Mandible
retract Mandible

Occipitalis (occipitofrontalis)

anchor and retract galea aponeurotica

Frontalis (occipitofrontalis)

raise the eyebrows
wrinkle forehead

Platysma

depress Mandible
tighten fascia of neck
draw down corner of mouth

Rhomboid Minor

adduct the scapula (STJ)
elevate scapula
scapula

Teres Minor

lateral rotate the shoulder (G/H )
adduct the shoulder
stabilize the Humerus in Glenoid cavity

Supraspinatus

abduct the shoulder (G/H)
stablize head of Humerus in Glenoid Cavity

Levator Scapula

Unilaterally: elevate scapula
downwardly rotate scapula
laterally flex head and neck
Bilaterally: extend head and neck
rotate head and neck s/s

Latissimus Dorsi

extend shoulder (G/H)
adduct G/H
medially rotate G/H

Serratus Anterior

abduct the scapula
upwardly rotate scapula
depress scapula
hold medial border of the scapula against rib cage

Pectoralis Major

ALL FIBERS: adduct shoulder
Medial rotation
assist elevation during inhalation
UPPER FIBERS: flex shoulder
horizon adduction
LOWER FIBERS: extend shoulders

Teres Major

adduct shoulder G/H
extend G/H
Medially rotate G/H

Infraspinatus

laterally rotate shoulder (G/H)
adduct G/H
stablize the head of Humerus in Glenoid Cavity

Trapezius

Unilaterally: extend head and neck
lateral flexion of head and neck s/s
rotate head and neck o/s
elevate scapula
upwardly rotate

Subscapularis

medially rotate the shoulder (G/HJ)
stablize the head of Humerus in Glenoid cavity

Deltoid

ALL FIBERS: abduct shoulder (G/H)
ANTERIOR FIBERS: Flex G/H
medially rotate G/H
horizontally adduct G/H
POSTERIOR FIBERS: extend G/H
laterally rotate G/H
horizontally abduct

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