Brainscape's Knowledge GenomeTM

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


See full index

Musculoskeletal > Anterior and Posterior Axio-Appendicular Muscles (Quiz 1) > Flashcards

Anterior and Posterior Axio-Appendicular Muscles (Quiz 1) Flashcards

1
Q

Which ribs attach to the pectoralis major?

potential test q

A

ribs 1-6

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

What ribs attach to the pectoralis minor?

potential test q

A

ribs 3-5

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

What ribs attach to the subclavius?

potential test q

A

rib 1 only

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

What ribs attach to the serratus anterior?

potential test q

A

ribs 1-8

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

What are the 4 muscles that make up the anterior axio-appendicular muscles?

A

-pectoralis major
-pectoralis minor
-subclavius
-serratus anterior

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

What is the origin/proximal attachment for the pectoralis major?

A

2 head attachments
-clavicular head (anterior surface of the medial half of clavicle)
-sternocostal head (anterior surface of sternum)

superior 6 costal cartilages (ribs 1-6)

aponeurosis of external oblique muscle

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

What is the insertion/distal attachment of the pectoralis major?

A

lateral lip of the inter-tubercular sulcus of the humerus

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

What are the innervation points of the pectoralis major?

A

-lateral and medial pectoral nerves (at the clavicular head and sternocostal head)

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

What are the main actions of the pectoralis major?

A

-adducts and medially rotates the humerus
-draws scapula anteriorly and inferiorly

ACTING ALONE:
-the clavicular head flexes the humerus
-the sternocostal head extends it from the flexed position
-note: these 2 heads are opposites of each other when acting alone

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

What muscle’s inferior border forms the anterior axillary fold?

A

pectoralis major

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

The pectoralis major and deltoid form the deltopectoral groove for what vein?

A

cephalic vein

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

What are the 2 muscle tests for the pectoralis major?

A

1) clavicular head- abduct arm 90 degrees and move it anteriorly against resistance
2) sternocostal head- abduct 60 degrees and adduct against resistance

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

What is the origin/proximal attachment for the pectoralis minor?

A

ribs 3-5 costal cartilage

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

What is the insertion/distal attachment for the pectoralis minor?

A

medial border and superior surface of the coracoid process of the scapula

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

What innervates the pectoralis minor?

A

medial pectoral n.

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

What is the main action of the pectoralis minor?

A

stabilizes scapula by drawing it inferiorly and anteriorly against the thoracic wall

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

What muscle stabilizes the scapula when outstretching the upper limb (ex: to touch something out of reach)?

A

pectoralis minor

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

What muscle elevates the ribs for deep inspiration when pectoral girdle is fixed or elevated?

A

pectoralis minor

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What muscle forms a bridge with the clavicle for neurovascular vessels in the arm?

A

pectoralis minor

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What is the origin/proximal attachment for the subclavius?

A

rib 1 junction and its costal cartilage

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What is the insertion/distal attachment for the subclavius?

A

inferior surface of the middle third of the clavicle (at the clavicular groove)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

What innervates the subclavius?

potential test q!

A

nerve to subclavius

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

What is the main action of the subclavius?

A

anchors and depresses the clavicle

24
Q

What muscle is known as the “boxer’s muscle”?

potential test q

A

serratus anterior

25
Q

What is the origin/proximal attachment of the serratus anterior?

A

external surfaces of the lateral aspects of ribs 1-8

26
Q

What is the insertion/distal attachment of the serratus anterior?

A

anterior surface of the medial border of the scapula

27
Q

What innervates the serratus anterior?

A

long thoracic n.

28
Q

What are the main actions of the serratus anterior?

A

-protects scapula and holds it against the thoracic wall
-rotates scapula

29
Q

What muscle is a strong protractor muscle and is used when punching or reaching anteriorly, push-ups or pushing against resistance?

A

serratus anterior

30
Q

What muscle normally holds the scapula against the thoracic wall, but paralysis to this muscle would cause a winged scapula?

A

serratus anterior

31
Q

What is the muscle test for the serratus anterior?

A

outstretched hand pushed against a wall

32
Q

What is another name for posterior axio-appendicular muscles?

A

extrinsic shoulder muscles

33
Q

What do posterior axio-appendicular (extrinsic shoulder) muscles do?

A

-connect axial skeleton (vertebral column) to superior appendicular skeleton (pectoral girdle and humerus)
-produce and control limb movements

34
Q

What are the 2 superficial posterior axio-appendicular (extrinsic shoulder) muscles?

A

1) trapezius
2) latissimus dorsi

35
Q

What are the origins/proximal attachments for the trapezius?

A

-medial third of superior nuchal line
-external occipital protuberance (EOP)
-nuchal ligament
-SP of C7-T12 vertebrae

36
Q

What are the insertion/distal attachments for the trapezius?

A

-lateral third of clavicle
-acromion and spine of scapula

37
Q

What innervates the trapezius?

A

-spinal accessory nerve (CN XI) motor fibers
-spinal nerves (pain and proprioception fibers)

38
Q

What are the actions of the trapezius?

A

-descending part elevates the scapula
-ascending part depresses the scapula
-middle part (or all parts together) retracts the scapula

descending and ascending parts act together to rotate the glenoid cavity superiorly

39
Q

What muscle that is weak will cause drooping of shoulders?

A

trapezius

40
Q

What are the origin/proximal attachments of the latissimus dorsi?

A

-SP of inferior 6 thoracic vertebrae (T7-T12)
-thoracolumbar fascia
-iliac crest
-inferior 3-4 ribs (ribs 10-12, or ribs 9-12)

41
Q

What is the insertion/distal attachment for the latissimus dorsi?

A

floor of the inter-tubercular sulcus of the humerus (also known as the bicipital groove of the humerus)

42
Q

What innervates the latissimus dorsi?

A

thoracodorsal n.

43
Q

What are the main actions of the latissimus dorsi?

A

-extends, adducts, and medially rotates humerus
-raises body towards arms during climbing

44
Q

What muscle is important for climbing, chin-ups, chopping wood, paddling canoe, or swimming?

A

latissimus dorsi

45
Q

What are the 3 deep posterior axio-appendicular (extrinsic shoulder) muscles?

A

1) levator scapulae
2) rhomboid minor
3) rhomboid major

46
Q

What is the origin/proximal attachment of the levator scapulae?

potential test q

A

posterior tubercles of TPs of C1-C4 vertebrae

47
Q

What is the insertion/distal attachment of the levator scapulae?

potential test q

A

medial border of the scapula superior to the root of scapula spine

48
Q

What 3 muscles are innervated by the dorsal scapular nerve?

potential test q

A

the deep posterior axio-appendicular muscles
-levator scapulae
-rhomboid major and minor

49
Q

What innervates the levator scapulae?

potential test q

A

dorsal scapular n. and cervical nerves

50
Q

What are the main actions of the levator scapulae?

potential test q

A

-elevates scapula and rotates its glenoid cavity inferiorly by rotating scapula
-bilaterally (tightened muscle) extends the neck
-unilaterally flexes the neck (lateral flexion)

51
Q

What is the origin/proximal attachment of rhomboid minor?

potential test q

A

-nuchal ligament
-SP of C7 and T1

52
Q

What is the insertion/distal attachment of rhomboid minor?

potential test q

A

smooth triangular area at the medial end of scapular spine (superior 3rd of scapular spine)

53
Q

What innervates rhomboid major/minor?

potential test q

A

dorsal scapular n.

54
Q

What are the main actions of rhomboid major/minor?

potential test q

A

-retract scapula and rotate its glenoid cavity inferiorly
-fix scapula to thoracic wall

55
Q

What is the origin/proximal attachment of rhomboid major?

A

SP of T2 and T5 vertebrae

56
Q

What is the insertion/distal attachment of rhomboid major?

A

medial border of scapula from the level of spine to the inferior angle

Musculoskeletal (17 decks)

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