Shoulder + Scap Random Flashcards
Random information about g/h jt and s/t jt
What do all rotator cuff muscles do?
stabilize the head of the humerus in the glenoid cavity
What are the actions of teres minor and Infrapinatus?
- Laterally rotate g/h jt,
- Adduct g/h jt
- Stabilize the head of the humerus in glenoid cavity
What muscle is referred to as “lats little helper?”
Teres major
Which muscle is in the minor league?
Teres minor- in the minor league- a rotator cuff muscle
Which muscles are the handcuff muscles?
Teres MAJOR + Latissimus Dorsi
What do the handcuff muscles do?
- extend the g/h
- adduct g/h
- medially rotate g/h
(lats and teres MAJ accomplish these)
What 3 muscles attach to the coracoid process?
- coracobrachialis (later border)
- biceps brachii short head
- pectoralis minor ( medial border)
The deltoid has the same origin point as the insertion of the trapezius- what is it?
- lateral 1/3 of clavicle
- acromion
- spine of scapula
The upper and lower fibers of the traps act as own antagonist in which 2 actions?
- upper fibers elevate scapula
- lower fibers depress scapula2¸‹ª
In the SITS muscles, how many actions do the ‘s’ have?
S+S each have 2 actions->
supraspinatus- ABducts g/h jt
supscap-medially rotates g/h
—both–> stabilize the head of the humerus in the glenoid cavity
What action do all the SITS muscles do?
Stabilize the head of the humerus in the glenoid cavity
The Supraspitus muscle for SITS are antagonists of IT for which actions?
supraspinatus- ABDuct
Infra + Tminor- Adduct
which muscle origin is 3rd, 4th, and 5th ribs?
pectoralis minor
what 2 actions do serratus ant + pec minor have in common?
- depress S/T jt
- ABduct S/T jt
What actions are antagonists for serratus ant + pec minor?
- serratus ant- upwardly rotates S/T jt
- Pec minor- downwardly rotates S/T jt
What action with scapula fixed does serr ant + pec minor perform?
With scapula fixed, serr ant + pec minor MAY act to elevate the thorax during forced inhalation
for Pec MAJ- what 2 actions are antagonists?
upper fiber- flex g/h jt
lower fiber- extend g/h jt
which antagonist actions are performed by triceps and biceps (2)
biceps- flex elbow (humeroulnar jt)
triceps- extend elbow ((humeroulnar jt)
coracobrachialis has what 2 actions?
- flex g/h jt
- adduct g/h jt
what is a protuberance?
something that sticks out
what is aponeurosis?
broad, flat tendon- like a tarp
what is sub =
deep like submarine
what are spinous processess?
part of vertebrae that stick out
what are dimples of the venus?
Your SSI- sagittally symmetrical indentations
landmark for back drape
