muscles of the upper limb MP Flashcards

1
Q

Rhomboid major

origin

A

Spinous processes of the T2 to T5 vertebrae

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Rhomboid major

Insertion

A

Medial border of the scapula

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Rhomboid major

action

A

Retracts (retract=draw bak) the scapula, rotates it to depress the glenoid cavity.
also fixes the scapula to the thoracic wall.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Rhomboid major

INNERVATION

A

Dorsal

scapular nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Rhomboid minor

Origin

A

spinous processes of C7–T1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Rhomboid minor

insertion

A

Medial border of scapula

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Rhomboid minor

Actions

A

Retracts and rotates scapula,

fixes scapula to thoracic wall

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Rhomboid minor

INNERVATION

A

Dorsal

scapular nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Levator scapulae

Origin

A

transverse processes of C1 - C4 vertebrae

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Levator scapulae

Insertion

A

Superior part of medial border of scapula

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Levator scapulae

Actions

A

Elevates scapula and tilts

its glenoid cavity inferiorly by rotating scapula

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Levator scapulae

INNERVATION

A

Dorsal scapular
and cervical
(C3 and C4)
nerves

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Serratus anterior

Origin

A

upper 8-9 ribs

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Serratus anterior

Insertion

A

medial margin of the scapula

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Serratus anterior

Actions

A

Protracts (protract= draw out/lengthen ) and stabilizes scapula
Rotates scapula upward, and
pulls it anterior
toward thoracic wall

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Serratus anterior

INNERVATION

A
long thoracic
(C05-C07)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Pectoralis minor

Origin

A

Third to fifth ribs, near their costal cartilages

18
Q

Pectoralis minor

Insertion

A

coracoid process of the scapula

19
Q

Pectoralis minor

Actions

A

Depresses scapula

& stabilises it (by drawing it inferiorly and anteriorly against the thoracic wall

20
Q

Pectoralis minor

INNERVATION

A

Medial pectoral

nerve

21
Q

Subclavius

Origin

A

Junction of first rib and

costal cartilage

22
Q

Subclavius

Insertion

A

inferior surface of middle third of clavicle)

23
Q

Subclavius

Actions

A

depresses clavicle

24
Q

Subclavius

INNERVATION

A

Nerve to

subclavius

25
Trapezius | Origin
1. external occipital protuberance, 2. nuchal ligament, 3. medial superior nuchal line, 4. spinous processes of vertebrae C7-T12
26
Trapezius | Insertion
1. lateral third of the clavicle, 2. acromion process, and 3. spine of scapula
27
Trapezius | Actions
rotation, retraction, elevation, depression of scapula
28
Trapezius | Innervation
Spinal root of accessory nerve (cranial nerve XI) | and cervical nerves (C3 and C4)
29
Sternocleidomastoid (SCM) | Origin
Manubrium | sterni and medial portion of the clavicle
30
Sternocleidomastoid (SCM) | Insertion
Mastoid process of the temporal bone, | superior nuchal line
31
Sternocleidomastoid (SCM) | Actions
``` Tilts head to one side, i.e., laterally flexes and rotates head so face is turned superiorly toward opposite side; acting together, muscles flex neck ```
32
Sternocleidomastoid (SCM) | Innervation
Spinal root of cranial nerve CN XI and C2-C3
33
Omohyoid | Origin
Upper border of the scapula
34
Omohyoid | Insertion
inferior border of Hyoid bone
35
Omohyoid | Actions
depresses, move backwards, n fixes hyoid | bone
36
Omohyoid | Innervation
C1-C3 from ansa cervicalis (a loop of nerves that are part of the cervical plexus)
37
Pectoralis major | Origin
``` 4 origins 1. Medial half of clavicle; 2. sternum; 3. superior six costal cartilages; 4. aponeurosis of external abdominal oblique (extra info on doc) ```
38
Pectoralis major | Insertion
Intertubercular (bw tubercles) groove of humerus
39
Pectoralis major | Actions
1. Clavicular head: flexes the humerus. 2. Sternocostal head: extends the humerus. 3. As a whole, adducts and medially rotates the humerus. 4. It also draws the scapula anteriorly and inferiorly
40
Pectoralis major | Innervation
Lateral and medial pectoral nerves