Brainscape's Knowledge GenomeTM

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


See full index

ANAT 315 - human musculoskeletal > pectoral girdle > Flashcards

pectoral girdle Flashcards

1
Q

What are the bones of the pectoral girdle?

A

Scapula
Clavicle

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

In average, how long is the shaft of the clavicle?

A

12-15 cm

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

What muscle is attached to groove of the clavicle?

A

Subclavius muscle

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

Name the ends of the clavicle

A

Sternal end (medial end)
Acromial end (lateral end)

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

Name the borders and angles of the scapula

A

Borders:
Medial border
Superior border
Lateral border

Angles:
Inferior angle
Lateral angle
SUPERIOR angle

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

Name the different fossas of the scapula

A

Subscapular fossa
Supraspinous fossa
Infraspinous fossa
GLENOID fossa

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

What connect the infraspinous fossa to the supraspinous fossa

A

Great scapular notch

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

Name the tubercles & processes of the scapula

A

Acromion
Coracoid process
SUPRA-glenoid tubercle
INFRA-glenoid tubercle

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

At what level of the vertebral column are the surface anatomy landmarks of the scapula?

A

Spine of the scapula at T3
Inferior angle at T7

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

Name the joints of the pectoral girdle and their classification

A

Acromioclavicular jt: synovial, plane/gliding
Sternoclavicular jt: synovial, saddle (biaxial)
Scapulothoracic jt: Synovial, plane/gliding
Glenohumeral jt: synovial, ball/socket

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

What movement is the accromioclavicular jt responsible for?

A

Not much mvmt
some rotation of acromion about the lateral end of the clavicle

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

What are the ligaments that support the acromioclavicular jt?

A

Coracoclavicular ligament
-trapezoid ligament
-CONOID ligament
Acromioclavicular
Coraco-acromial ligament

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

Which ligament from the acromioclavicular jt does not cross the jt?

A

Coraco-acromial ligament (roof)
It links 2 parts of the scapula

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

What is the clinical significance of the coraco-acromial ligamnet?

A

Prevents superior dislocation of humerus

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

Name the articular surfaces of the sternoclavicular jt

A

3 articular surfaces
Sternal end
Manubrium
1st costal cartilage

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

Name the ligaments of the sternoclavicular jt

A

Interclavicular ligament
Anterior sternoclavicular ligament
Costoclavicular ligament

17
Q

What are the movements from the sternoclavicular jt?

A

elevation/depression
retraction/protraction
very minimal rotation

18
Q

Which joint of the pectoral girdle is not an anatomical joint? And why?

A

Scapulothoracic jt
Physiological/functional jt since it has
-no capsule
-no articular cartilage
-no ligaments

19
Q

What is the region of the scapulothoracic “joint”?

A

Anterior surface of the scapula lying on the posterior surface of rib 2-7
*landmarks of scapula on spine

20
Q

Name the 2 opposed surfaces of the scapulothoracic joint

A

SA & SS
Serratus anterior & subscapularis with loose connective tissue on btw to facilitate gliding

21
Q

What is the function of the scapulothoracic joint?

A

Provides dynamic stability of shoulder jt to enable full glenohumeral elevation and abduction

22
Q

Name the mvmts of the pectoral girdle at the scapulothoracic joint

A

elevation/depression
retraction(adduction) /protraction(abduction)
upward/downward rotation

23
Q

Where is most of the mvmt at the scapulothoracic joint mainly happening?

A

Anteriorly at the sternoclavicular jt
*less so at acromial jt

24
Q

Name the anterior muscles of the pectoral girdle

A

Subclavius
Scapularis minor

25
Q

Which anterior muscle of the pectoral girdle depresses the clavicle & supports the sternoclavicular jt?

A

Subclavius

26
Q

Which anterior muscle of the pectoral girdle protract, depresses the clavicle & allows its downward rotation?

A

Subscapularis minor

27
Q

Which muscle is aka the boxers muscle?

A

Serratus anterior

28
Q

Name the anterior muscle of the pectoral girdle that acts the most on the scapula

A

Scapularis minor

29
Q

Which muscle literally means below the clavicle?

A

Subclavius

30
Q

What is the innervation of the serratus anterior and what is its clinical significance?

A

Long thoracic n. (C5-7)
When injured causes weakness or paralysis in the serratus anterior = inability/weakness in protracting scapula

31
Q

Name the condition where there is an inability/weakness in protracting scapula

A

Medial winging scapula
*when pushing against a wall inability to protract on affected side

32
Q

Name the posterior muscles of the pectoral girdle

A

Trapezius
Levator scapulae
Rhomboid major & minor
Latissimus dorsi

33
Q

Why does the latissimus dorsi have actions on the scapula motion?

A

Crosses the SCAPULOTHORACIC jt

34
Q

Name the different functions of the trapezius on the scapula

A

Upper 1/3: elevation & upward rotation
Mid 1/3 or all parts: retraction
Lower 1/3: depression & upward rotation

35
Q

Which posterior muscles act on the elevation of the scapula?

A

Levator scapulae

36
Q

What are the palpable landmarks of the pectoral girdle?

A

Anterior:
clavicle
coracoid process
acromion

Posterior:
Spine of the scapula
Inferior angle
Medial border
Acromion

37
Q

Which of the joints of the pectoral girdle does not produce much mvmt?

A

Acromioclavicular jt

ANAT 315 - human musculoskeletal (13 decks)

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