Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

OAU Anatomy > Muscles Of The Shoulder Girdle > Flashcards

Muscles Of The Shoulder Girdle Flashcards

1
Q

The only bony articulation between the upper limb and axial skeleton?

A

Sternoclavicular joint

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

Bones of the shoulder girdle

A

1) Scapula

2) Clavicle

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

Anatomical joints of the shoulder girdle

A

1) Glenohumeral joint

2) Sternoclavicular joint

3) Acromioclavicular joint

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

Physiological joints of the shoulder girdle

A

Scapulothoracic joint

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

What joint in the upper limb is supported by muscles

A

Scapulothoracic joint

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

Which of these is not an extrinsic muscle:

a) Serratus anterior
b) Teres minor
c) Levator scapulae
d) Pectoralis minor

A

Teres minor

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

Extrinsic muscle

A

Suspends scapula from the trunk. Stabilizes and/or actively moves the scapula

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

Examples of extrinsic muscle

A

Serratus anterior
Levator scapulae
Trapezius
Pectoralis minor
Rhomboid major
Rhomboid minor

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

Intrinsic muscles

A

Attach the scapula to the humerus

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

Examples of intrinsic muscles

A

Deltoid
Teres major
Rotator cuff muscles (supraspinatus, infraspinatus, teres minor, subscapularis).

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

Muscles that attach trunk to the humerus

A

Latissimus dorsi

Pectoralis major

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

Anterior axioappendicular muscles

A

Serratus anterior
Pectoralis minor
Pectoralis major
Subclavius

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

Posterior axioappendicular muscles

A

Trapezius
Latissimus dorsi
Rhomboid minor
Rhomboid major
Levator scapulae
Deltoid
Teres major
Rotator cuff muscles

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

Trapezius:
Origin
Insertion
Innervation

A

a) Medial third of the nuchal line, external occipital protuberance, ligamentum nuchae, spinous process of C7-T12

b) Superior fiber - Lateral third of clavicle
Middle fiber - acromion process of scapula
Inferior fiber - Spine of scapula

c) Accessory nerve (CN XI) (motor fibers) & C3, C4 spinal nerve (pain & proprioceptive fibers)

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

Action of trapezius

A

Superior fiber - Elevates scapula

Middle fiber - Retracts scapula

Inferior fiber - Depresses scapula

(Superior & inferior fibers act together to rotate glenoid cavity superiorly).

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

Strap-like muscle in the upper limb?

A

Levator scapulae

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Levator scapulae:
Origin
Insertion
Innervation

A

a) Posterior tubercules of transverse process of C1-C4

b) Medial border of scapula superior to the root of the spine of the scapula

c) Dorsal scapula (C5), cervical nerves (C3 & C4)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

The inferior third of levator scapulae is deep to what muscle?

A

Trapezius

19
Q

Superior third of levator scapulae is deep to what muscle?

A

Sternocleidomastoid

20
Q

The rhomboid muscles have a rectangular shape

A

False.

Rhomboid appearance

21
Q

________ forms broad parallel bands that pass inefriolaterally from the vertebrae to the medial boarder of the scapula

A

The Rhomboid muscles

22
Q

The rhomboid muscles pass superiolaterally from the vertebrae to the medial boarder of the scapula?

True

False

A

False.

Inferiolaterally.

23
Q

Rhomboid major is ____ & _____ times wider than rhomboid minor

A

Thin

2

24
Q

Rhomboid minor is the thinner muscle of the two rhomboid muscles

A

False.

Thicker than rhomboid major but not as wide

25
Q

Which of the two rhomboid muscles is the superior one?

A

Rhomboid minor

26
Q

Rhomboid minor
Origin
Insertion
Innervation

A

1) Nuchal ligament, spinous process of C7 - T1 vertebrae

2) Smooth triangular area at the end of the spine of the scapula

3) Dorsal scapula (C4, C5)

27
Q

Rhomboid major
Origin
Insertion
Innervation

A

1) Spinous process of T2 - T5

2) Medial boarder of scapula from level of spine to inferior angle

3) Dorsal scapula (C4, C5)

28
Q

Action of rhomboid minor

A

Retracts scapula (adducts scapula)

Fixes scapula to thoracic wall

Rotates scapula to depress its glenoid cavity

29
Q

Action of rhomboid major

A

Retracts scapula (adducts scapula)

Fixes scapula to the thoracic wall

Rotates scapula to depress its glenoid cavity

30
Q

What makes the medial wall of the axilla?

A

Serratus anterior

31
Q

Serratus anterior overlies the medial boarder of the thorax

A

False.

It lies on the lateral part of the thorax

32
Q

Serratus anterior
Origin
Insertion
Innervatiom

A

1) External surface of the lateral portion of the 1st - 8th ribs

2) Anterior portion of the medial boarder of the scapula

3) Long thoracic nerve (C5, C6 & C7)

33
Q

Action of serratus anterior

A

Protracts scapula (abduction)

Holds scapula against thoracic wall

Rotates scapula at the inferior angle

34
Q

What clinical ailment is the medial end of the scapula away from the thorax?

A

Winged scapula

35
Q

What leads to winged scapula?

A

Insufficiency of the serratus anterior

Damage/lesions to the long thoracic nerve

36
Q

Pectoralis minor and ____ form a bridge under which nerves and vessels must pass to the arm

A

Coracoid process of the scapula

37
Q

Pectoralis minor is a fan-shaped muscle

A

False.

Triangular muscle.

38
Q

The bulk of muscles on the shoulder is the _____?

A

Deltoid

39
Q

Deltoid:
Origin
Insertion
Nerve supply

A

1) Lateral third of clavicle, acromion process of scapula & spine of scapula

2) Deltoid tuberosity on the humerus

3) Axillary nerve (C5 & C6)

40
Q

Action of deltoid muscle

A

Anterior fiber: Flexion and medial rotation of the humerus

Middle fiber: Elevation (abduction)

Posterior fiber: Extension and lateral rotation of the arm

41
Q

Teres major:
Origin
Insertion
Nerve supply

A

1) Posterior surface of inferior angle of scapula

2) medial lip of intertubercular sulcus

3) Lower subscapular nerve (C5 & C6)

42
Q

Structures found around the suprascapular notch

A

Superior transverse suprascapular ligament

Suprascapular nerve which runs through the ligament

Suprascapular vein and artery which run above the ligament

43
Q

Ligaments around the shoulder joint

A

Inferior transverse suprascapular ligament

Coracoacromial ligament

Superior scapulohumeral ligament

Middle scapulohumeral ligament

Inferior scapulohumeral

Conoid ligament

Acromioclavicular ligament

Trapezius ligament

Transverse humeral ligament

OAU Anatomy (6 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions