Brainscape's Knowledge GenomeTM

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


See full index

Functional Human Anatomy > Lecture 5 - Shoulder girdle, Shoulder joint and Movements > Flashcards

Lecture 5 - Shoulder girdle, Shoulder joint and Movements Flashcards

1
Q

What is the difference between the axial and appendicular skeleton?

A

Axial (refers to axis):
• Skull
• Vertebral column
• Thoracic cage

Appendicular (refers to appendages,
i.e., extremities):
• Pectoral (Shoulder) girdle
• Upper limb
• Pelvic girdle
• Lower limb

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

What does the shoulder (pectoral) girdle (L and R) consist of?

A

Each shoulder (pectoral) girdle (L and R) consists of a scapula (shoulder
blade) and a clavicle (collar bone). The shoulder girdle attaches the upper limb
to the axial skeleton.

Note that humerus is not
part of the shoulder girdle.

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

What are the different parts of a scapula?

Identify the structures.

A

Parts:
• Superior and inferior angle (labelled 1 and 2)
• Spine
• Acromion
• Coracoid process
• Glenoid cavity

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

What are the different joints of the clavicle?

A

Joints:
1. Sternoclavicular joint (synovial with
fibrocartilaginous disc)
2. Acromioclavicular joint (synovial)
3. Coracoclavicular joint (syndesmosis) –
pair of short ligaments between clavicle
and coracoid process

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

What are some important notes for the clavicle?

A

Note:
• strut function
• shoulder separation (AC joint!)
• fracture—relation to major vessels and nerves of the upper extremity

  • The clavicle is the only bone that does the attachment of the axial skeleton.
  • A broken clavicle is the most common fracture on a cyclist.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What are the different possible movements of the scapula?

A
  1. Elevation
  2. Depression
  3. Protraction
  4. Retraction
  5. Lateral rotation (inferior angle* moves laterally)
  6. Medial rotation (inferior angle moves medially,
    i. e., returns to anatomical position)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What are the possible movements of the clavicle?

A

Movement is at:

  1. Sternoclavicular joint
  2. Acromioclavicular joint

Movement is in 3 planes:
• anterior – posterior
• superior – inferior
• rotation
Movements of the clavicle:
1. Elevation and depression of the distal
end of the clavicle
2. Anterior and posterior movement of
the distal end
3. Anterior and posterior rotation along
the long axis
Note: When the scapula moves so does the clavicle!

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

What are the different muscles that move the scapula?

A
  • Trapezius - elevates, retracts and depresses scapula
  • Rhomboids (major and minor) - retract scapula
  • Levator scapulae - elevates scapula
  • Serratus anterior – protracts scapula
  • Pectoralis minor – protracts and stabilizes
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

TRAPEZIUS !!!

Attachements :

Action:

Nerve:

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

RHOMBOID MAJOR AND RHOMBOID MINOR!!!

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

LEVATOR SCAPULAE!!!

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

SERRATUS ANTERIOR!!!

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

PECTORALIS MINOR!!!

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

Explain the shoulder (glenohumeral) joint.

A

Synovial joint, ball-and-socket type
• Multiaxial joint; the widest range of motion of all joints
• Articulating bones:
1. head of humerus
2. glenoid fossa of scapula
• Glenoid labrum: fibrocartilaginous rim attached to the margin of glenoid fossa,
it deepens the socket.

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

What are the movements of the arm
at the shoulder joint?

A
  • Flexion
  • Extension
  • Abduction
  • Adduction
  • Medial rotation
  • Lateral rotation
  • Circumduction
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What are the muscles that move the arm at the shoulder joint?

1) Muscles that attach upper limb to the axial skeleton:
1.

2.
2) Muscles that attach upper limb to the shoulder girdle:
1.

2.

3.

A

1) Muscles that attach upper limb to the axial skeleton:
• Pectoralis major
• Latissimus dorsi
2) Muscles that attach upper limb to the shoulder girdle:
• Deltoid
• Rotator cuff muscles (4)
• Teres major

17
Q

PECTORALIS MAJOR!!!

A
18
Q

Identify the structures on the humerus.

A
19
Q

LATISSIMUS DORSI!!!

A
20
Q

DELTOID!!!

A
21
Q

ROTATOR CUFF MUSCLES

A

Group of 4 “SITS” muscles:

  1. Supraspinatus
  2. Infraspinatus
  3. Teres minor
  4. Subscapularis
22
Q

Identify the rotator cuff muscles.

A
23
Q

What is the function and innervation of the rotator cuff muscles?

A
  1. Supraspinatus: initiates abduction of the arm (first 15 degrees; deltoid is the
    main abductor). Nerve: Suprascapular nerve (C5, C6).
  2. Infraspinatus: lateral rotation or arm. Nerve: Suprascapular nerve.
  3. Teres minor: lateral rotation or arm. Nerve: Axillary nerve (C5, C6).
  4. Subscapularis: main medial rotator of the arm. Nerve: Upper and lower
    subscapular nerves (C5, C6)
24
Q

TERES MAJOR!!!

A

Functional Human Anatomy (24 decks)

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