Shoulder muscles Flashcards
1
Q
Deltoid
- Origin
- Insertion
A
Origin:
- Clavicle (ant.)
- Acromion process (post.)
- Spine of scapula (lat.)
Insertion:
- Deltoid tuberosity (lat. Humerus)
2
Q
Deltoid
- Actions
- Innervation
A
Action(s)
- Arm abduction
- Flexion + medial rotation (ant.)
- Extension + lateral rotation (pos.)
Innervation:
- Axillary n.
(C5, C6)
3
Q
Teres major
- Origins
- Insertion
A
Origin
- Pos. inferior angle of scapula
Insertion
- Medial bicipital groove
4
Q
Teres Major
- Actions
- Innervations
A
Actions
- Medial rotation (All of arm)
- Adduction
- Extension
Innervation
- Lower subscapular n.
(C5, C6, C7)
5
Q
SUPRASPINATUS
- Origin
- Insertion
A
Origin:
- Supraspinous fossa
Insertion:
- Superior greater tubercle
6
Q
SUPRASPINATUS
- Action(s)
- Innervation
A
Actions:
- Arm abduction
- Stabilises humerus
Innervation:
- Suprascapular n. (C5, C6)
7
Q
INFRASPINATUS
- Origin
- Insertion
A
Origin:
- Infraspinous fossa
Insertion:
- Middle greater tubercle
8
Q
INFRASPINATUS
- Action(s)
- Innervation
A
Actions:
- Lateral rotation of arm
- Stabilises humerus
Innervation:
- Suprascapular n. (C5, C6)
9
Q
TERES MINOR
- Action(s)
- Innervation
A
Actions:
- Lateral rotation of arm
- Adduction of arm
Innervation:
- Axillary n. (C5, C6)
10
Q
TERES MINOR
- Origin
- Insertion
A
Origin:
- Lateral scapula (above teres major)
Insertion:
- Inferior greater tubercle
11
Q
SUBSCAPULARIS
- Action(s)
- Innervation
A
Action:
- Medial rotation of arm
- Stabilises shoulder
Innervation:
- Upper/lower subscapular n. (C5, C6, C7)
12
Q
SUBSCAPULARIS
- Origin
- Insertion
A
Origin:
- Subscapular fossa (ant.)
Innervation:
- Lesser tubercle
