Brainscape's Knowledge GenomeTM

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


See full index

Yr 2 - Movement > Muscle Anatomy > Flashcards

Muscle Anatomy Flashcards

1
Q

Origin and insertion of latissimus dorsi?

A

Origin: spinous process of T7 to LV and sacrum, iliac crest, ribs 10 to 12 Inserts: floor or intertubercular sulcus of humerus (anterior aspect of humerus) Posterior origin to anterior insertion

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

What movement does the lat dorsi allow?

A
  • Extends humerus
  • Adducts humerus
  • Medially rotates humerus

Posterior origin to anterior insertion

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

Innervation of lat dorsi?

A

Thoracodorsal nerve (C6 to C8)

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

Photo of lat dorsi

A

f

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

Origin of pec major?

A

2 parts; clavicular and sternocostal part

Clavicular part: originates from anterior surface of medial 1/2 of clavicle

Sternocostal part: originates from anterior surface of sternum and costal cartilage of ribs 1-6

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

Insertion of pec major?

A

Both clavicular and sternocostal parts have same insertion point –> inserts on the (bicipital groove and deltoid tuberosity of the) humerus

I.e. clavicle and sternum to arm

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

What movement does the pec major allow?

A
  1. Flexion of humerus (e.g. throwing ball underhand) –> as clavicular fibres contract and pull humerus up
  2. Adduction of humerus (e.g. flapping arms) –> as fibres contract and pull the humerus towards the body
  3. Rotates humerus medially (e.g. arm wrestling)

Also keeps arm attached to trunk of body

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

Photo of pectoralis major

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

Origin of pec minor?

A

Anterior surface of ribs 3-5

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

Insertion of pec minor?

A

Coracoid process of scapula

I.e. ribs to shoulder blade

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

What movement does pec minor allow?

A
  • Stabilises scapula
  • Assists in protraction
  • Pulls tip of shoulder down
  • Retraction
  • Elevates ribs for deep inspiration when shoulder girdle is fixed
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Photo of pec minor

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

Origin and insertion of serratus anterior?

A

Origin: Lateral surfaces of ribs 1-8 or 9

Inserts: Costal surfaces of medial border of scapula

i.e. ribs to shoulder blade

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

What movement does serratus anterior allow?

A
  • Protraction of scapula
  • Assist in respiration when fixed shoulder girdle
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Photo of serratus anterior

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

Origin and insertion of trapezius?

A

3 parts; superior, middle inferior trapezius

Extends from back of head and neck to shoulder.

Inserts:

  • Lateral 1/3 of clavicle
  • Acromion
  • Spine of scapula
17
Q

What movement does trapezius allow?

A
  • Elevate scapula
  • Retract scapula
  • Depress scapula
18
Q

Origin and insertion of levator scapulae?

A

Origin: Transverse processes of C1-C4 (cervical vertebrae in neck)

Inserts: Upper portion of medial border of scapula

Neck –> shoulder

19
Q

Movement of levator scapulae?

A

Elevates scapula towards neck

20
Q

Photo of levator scapulae

A
21
Q

Origin and insertion of rhomboid major?

A

Origin: Spinous processes of T2-T5

Insertion: Medial border of scapula at spine of scapula

22
Q

Origin and insertion of rhomboid minor?

A

Origin: Lower portion of ligamentum nuchae, spinous processes of CVII and TI

Inserts: Medial border of scapula at spine of scapula

23
Q

What movement do the rhomboids allow?

A

Retraction of scapula (pulls it towards vertebral column)

24
Q

Origin and insertion of deltoid?

A

Origin: Lateral 1/3 of Clavicle (clavicular part), Acromion (acromial part), Spine of Scapula (spinal part) - Mnemonic: ‘Deltoid helps you carry SACS’

Inserts: Deltoid tuberosity of humerus

25
Q

What movement does deltoid muscle allow?

A
26
Q

Photo of deltoid

A
27
Q

Origin and insertion of teres major?

A

Origin: Posterior surface of inferior angle of scapula

Inserts: Anterior surface of humerus (intertubercular sulcus)

I.e. shoulder to arm

28
Q

What movement does teres major allow?

A

Medial rotation and extension of arm at the glenohumeral joint (produces movements of the arm on the shoulder joint)

By contracting, it pulls the humerus posteriorly (extension) and rotates it medially towards the trunk (medial rotation).

29
Q

Origin and insertion of teres minor?

A

Origin: Upper 2/3 of scapula

Inserts: Posterior surface of greater tubercle of humerus

30
Q

What movement does teres minor allow?

A

Lateral/external rotation of arm at glenohumeral joint –> is a rotator cuff muscle

Yr 2 - Movement (39 decks)

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