Term
|
Definition
origin: Manubrium of
sternum & medial
clavicle
insertion: Mastoid process
action: Bilateral action:
flexes head &
neck
Unilateral action:
laterally flexes
head & neck
innervation: accessory n. |
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Term
|
Definition
origin: Occipital bone &
spinous processes
of cervical &
thoracic vertebrae
insertion: Acromion
process, spine of
scapula, & lateral
clavicle
action: Superior fibers:
elevates scapula
Middle fibers:
retracts scapula
Inferior fibers:
depresses scapula
innervation: accessory n. |
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|
Term
|
Definition
origin:Outer surfaces of
ribs
insertion: medial border of scapula
action: protracts and depress scapula
innervation: brachial plexus |
|
|
Term
|
Definition
origin: Spinous processes
of vertebrae C7 –
T5
insertion: medial border of scapula
action: elevate and retracts scapula
innervation: brachial plexus |
|
|
Term
|
Definition
origin: Transverse
processes of
vertebrae C1 – C4
insertion; medial border of scapula
action: elevates scapula
innervation: brachial plexus |
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|
Term
|
Definition
origin: Spinous processes
of thoracic,
lumbar, & sacral
vertebrae, iliac
crest, lower ribs
insertion: Crest of lesser
tubercle &
intertubercular
groove
action: Extends, adducts,
medially rotates
humerus
innervation: brachial plexus |
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|
Term
|
Definition
origin: Lateral border of
scapula
insertion: Crest of lesser
tubercle
action: Extends, adducts,
medially rotates
humerus
innervation: brachial plexus |
|
|
Term
|
Definition
origin: Subscapular fossa
insertion: Lesser tubercle
action: Adducts and
medially rotates
humerus
innervation: brachial plexus |
|
|
Term
|
Definition
origin: Acromion process,
spine of scapula,
lateral clavicle
insertion: Deltoid tuberosity
action: Abducts, flexes,
extends, medially
rotates, and
laterally rotates
humerus
innervation: Axillary nerve |
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|
Term
|
Definition
origin: Lateral border of
scapula
insertion: Posterior greater
tubercle
action: Laterally rotates
humerus
innervation: axillary n. |
|
|
Term
|
Definition
origin: Sternum, costal
cartilages, and
medial clavicle
insertion: Crest of greater
tubercle
action: Adducts, medially
rotates, & flexes
humerus
innervation: brachial plexus |
|
|
Term
|
Definition
origin: Ribs 3-5
insertion: Coracoid process
action: Depresses &
protracts scapula
innervation: brachial plexus |
|
|
Term
|
Definition
origin: Supraspinous fossa
insertion: Superior greater
tubercle
action: Abducts humerus
innervation: brachial plexus |
|
|
Term
|
Definition
origin: Infraspinous fossa
insertion: Posterior greater
tubercle
action: Laterally rotates
humerus
innervation: brachial plexus |
|
|
Term
|
Definition
origin: Long head: inferior
glenoid tubercle
Medial & Lateral heads:
posterior surface of
humerus
insertion: Olecranon process
action: Extends forearm
innervation: Radial nerve |
|
|
Term
|
Definition
origin: Coracoid process
insertion: Medial surface of
humerus
action: Adducts &
flexes humerus
innervation: musculocutaneous n. |
|
|
Term
|
Definition
origin: Anterior surface of
humerus
insertion: Coronoid process &
ulnar tuberosity
action: Flexes forearm
innervation: musclocutaneous n. |
|
|
Term
|
Definition
origin: Long head: superior
glenoid tubercle
Short head: coracoid
process
insertion: Radial tuberosity action: Flexes forearm;
supinates hand
innervation: musclocutaneous n. |
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|
