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Gross Anatomy > Shoulder > Flashcards

Shoulder Flashcards

1
Q

Trapezius (Ascending)

A

O- Spinous process T5-T12

I- Scapula Spine

Inn.- Accessory n. (CN XI) C3-C4 cervical plexus

A- Depress scapula

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2
Q

Trapezius (Transverse)

A

O- Nuchal ligament at T1-T4 spinous process
I- Acromion
Inn.- Accessory n. (CN XI) C3-C4 cervical plexus
A- Scapular Retraction

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3
Q

Trapezius (Descending)

A

O- Superior nuchal line; spinous process C1-C7
I- Lateral 1/3 of the clavicle
Inn.- Accessory nerve (CN XI) C3-C4 cervical plexus
A- Elevation and upward rotation

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4
Q

Rhomboid Major

A

O- Spinous process of T2-T5 vertebrae
I- Medial border of scapula below scapular spine
Inn.- Dorsal scapular n. (C4-C5)
A- Scapular Retraction

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5
Q

Rhomboid Minor

A

O- Spinous process of C7-T1
I- Medial border of the scapula above scapular spine
Inn.- Dorsal Scapular n. C4-C5
A- Scapular Retraction

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6
Q

Latissimus Dorsi

A

O- Spinous process T7-T12, thorocolumbar fascia, inferior angle, 9th-12th ribs, iliac crest (posterior 1/3)
I- Floor of intertubecular groove
Inn.- Thorocodorsal n. C6-C8
A- IR, ADD, EXT, respiration

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7
Q

Levator Scapulae

A

O- Transverse process C1-C4
I- Superior angle of the scapula
Inn.- Dorsal scapular. C4-C5
A- Elevation, Downward rotation, and lateral flexion of neck

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8
Q

Anterior Scalene

A

O- Anterior tubercles of transverse process of C3-C6
I- Scalene tubercle of 1st rib
Inn.- Cervical and brachial plexus C3-C8
A. Elevate ribs during forced respiration (with ribs mobile), Unil: bend CS to same side. Bil: flex neck

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9
Q

Middle Scalene

A

O-Transverse process of C1-C2 and post. tubercles of transverse process of C3-C7.
I- 1st rib posterior to groove for subclavian a.
Inn.- Cervical and brachial plexus C3-C8
A- (with ribs mobile) elevate ribs during forced respiration. (fixed ribs) Unil: bend CS to same side. Bil: flex the neck

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10
Q

Posterior Scalene

A

O- Posterior tubercles of the transverse process C5-C7
I- outer surface of 2nd rib
Inn.- cervical and brachial plexus C3-C8
A- (ribs mobile) elevate ribs during forced respiration. (fixed ribs) Unil: bend CS to same side. Bil: flex the neck.

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11
Q

Sternocleidomatoid

A

O- Manubrium, Medial 1/3 of the clavicle
I- Mastoid Process, superior nuchal line
Inn. Spinal Accessory n. CN XI
A- Bil: Extend head, Unil: Lateral flexion and contralateral rotation.

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12
Q

Supraspinatus

A

O- Supraspinous fossa of scapula
I- Superior facet of the greater tubercle on the humerus
Inn.- Suprascapular n. C4-C6
A- Initiate Abduction for first 15 degrees

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13
Q

Infraspinatus

A

O- Infraspinous fossa of scapula
I- Middle facet of the greater tubercle on the humerus
Inn.- Suprascapular n. C4-C6
A- ER of the humerus

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14
Q

Teres Minor

A

O- Lateral border of the scapula
I- Inferior facet on the humerus
Inn.- Axillary n. C5,C6
A- ER of the humerus

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15
Q

Subscapularis

A

O- Subscapular fossa on the scapula
I- Lesser tubercle
Inn.- Subscapular n. C5,C6
A- IR of the humerus

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16
Q

Trapezius (Transverse)

A

Origin- Nuchal ligament at T1-T4 spinous process

Insertion- Acromion

Innervation- Accessory n. (CN XI) C3-C4 cervical plexus

Action- Retracts scapula

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17
Q

Trapezius (Descending)

A

Origin- superior nuchal line; spinous process C1-C7

Insertion- lateral 1/3 of the clavicle

Innervation- Accessory nerve (CN XI) C3-C4 cervical
plexus

Action-Elevates scapula

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18
Q

Rhomboid Major

A

Origin- Spinous process of T2-T5 vertebrae

Insertion- Medial border of scapula below scapular spine

Innervation- Dorsal scapular n. (C4-C5)

Action- draws scapula medially upward. Stabilizes scapula

19
Q

Rhomboid Minor

A

Origin- Spinous process of C7-T1

Insertion- medial border of the scapula above scapular spine

Innervation- Dorsal Scapular n. C4-C5

Action- draws scapular medially upward. Stabilizes the scapula

20
Q

Levator Scapulae

A

Origin- Transverse process C1-C4

Insertion- superior angle of the scapula

Innervation- Dorsal scapular. C4-C5

Action- Draws scapula medially upward while moving inferior angle medially; inclines neck to same side

21
Q

Latissimus Dorsi

A

Origin-Spinous process T7-T12, thorocolumbar fascia,
inferior angle, 9th-12th ribs, iliac crest (posterior 1/3)

Insertion- Floor of intertubecular lip. Crest of lesser
tuberosity of humerous

Innervation- Thorocodorsal n. C6-C8

Action- IR, ADD, EXT, respiration

22
Q

Pectorals Major (Abdominal)

A

O- Rectus Sheath
I- Crest of the greater tubercle
Inn.- Medial and Lateral pectoral n. C5-T1
A- Add, IR

23
Q

Teres Major

A

O- Inferior Angle of Scapula
I- Crest of the lesser tubercle of the humerus
Inn.- Lower Subscapular n. C5-C7
A- Extension, ADD, IR of the humerus

24
Q

Deltoid (Clavicular)

A

O- Lateral 1/3 of the clavicle
I- Deltoid Tuberosity
Inn.- Axillary n. C5,C6
A- Flex, IR, Add, Assists Abd between 60/90 degrees

25
Q

Deltoid (Acromial)

A

O- Acromion
I- Deltoid tuberosity
Inn.- Axillary n. C5,C6
A- Abduction

26
Q

Deltoid (Scapular Spine)

A

O- Spine of the Scapular
I- Deltoid Tuberosity
Inn.- Axillary n. C5,C6
A- Ext, ER, Add, Assists Abd between 60/90 degrees

27
Q

Pectorals Major (Clavicular)

A

O- Medial half of clavicle
I- Crest of the greater tubercle
Inn.- Medial and Lateral pectoral n. C5-T1
A- Flex, Add, IR

28
Q

Pectoralis Major (Sternalcostal)

A

O- Sternum and costal cartilage 1-6
I- Crest of the greater tubercle
Inn. - Medial and Lateral pectoral n. C5-T1
A- flex, Add, IR

29
Q

Pectorals Major (Abdominal)

A

O- Rectus Sheath
I- Crest of the greater tubercle
Inn.- Medial and Lateral pectoral n. C5-T1
A- Add, IR

30
Q

Serratus Anterior

A

O- Ribs 1-9
I- Medial Border of the Scapula
Inn.- Long Thoracic n. C5-C7
A- Protraction and Upward rotation Scapula

31
Q

Subclavius

A

O- 1st rib
I- Inferior surface of the clavicle
Inn.- N. to subclavius C5,C6
A- Stabilizes clavicle in SC joint

32
Q

Omohyoid

A

O- Superior border of Scapula
I- Hyoid Bone
Inn. Ansa Cervicis C1-C3
A- Depresses hyoid, draws larynx and hyoid down

33
Q

Pectoralis Minor

A

O- Ribs 3-5
I- Coracoid process
Inn.- Medial pectoral n. C8,T1
A- Scapular depression, Inferior angle moves posteriomedially, downward rotation.

34
Q

Supraspinatus

A

O: supraspinous fossa

I: superior facet of greater tubercle

Inn: Suprascapular n. (C4-C6)

A: abduction of humerus

35
Q

Infraspinatus

A

O: infraspinous fossa

I: middle facet of greater tubercle

Inn: Suprascapular

A: External rotation humerus

36
Q

Teres Minor

A

O: lateral border of scapula

I: inferior facet of greater tubercle

Inn: Axillary n. (C5, C6)

A: external rotation, weak adduction

37
Q

Subscapularis

A

O: subscapular fossa

I: lesser tubercle

Inn: Subscapular n. (C5, C6)

A: internal rotation

38
Q

Teres Major

A

O: Inferior angle of scapula

I: Anterior angle of crest of lesser tubercle of humerus

Inn: Lower Subscapular n. (C5-C7)

A: internal rotation, adduction, extension

39
Q

Pectoralis Major

A

O: medial 1/2 clavicle, sternum and costal cartilage ribs 1-6

I: Crest of greater tubercle

Inn: Medial and Lateral pectoral nn. (C5-T1)

A: adduction, internal rotation
Clavicular/Sternocostal flexion; assist in respiration when shoulder is fixed

40
Q

Pectoralis Minor

A

O: 3-5th ribs

I: coracoid process

Inn: Medial Pectoral n.

A: depresses scapula, anterior tilt and depression of scapula, assist in respiration

41
Q

Subclavius

A

O: 1st rib

I: Inferior Surface of Clavicle

Inn: N. to subclavian (C5, C6)

A: steadies clavicle in the sternoclavicular joint

42
Q

Serratus Anterior

A

O: 1st to 9th ribs

I: medial border or scapula

Inn: Long Thoracic n. (C5-C7)

A: superior: lowers raised arm

entire: protraction; elevates 
inferior: rotates scapula laterally
43
Q

Sternocleidomastoid

A

Origin: Manubrium, Medial 1/3 of the clavicle.

Insertion: Mastoid process and superior nuchal line

Innervation: Accessory nerve (CN XI)

Action: Bil: Extend the head. Unil: Tilt head to same side and rot. to opp. side.

44
Q

Anterior Scalene

A

Origin: Anterior tubercles of transverse process of C3-C6

Insertion: Scalene tubercle of 1st rib

Innervation: Cervical and brachial plexus C3-C8

Action: elevate ribs during forced respiration (with ribs mobile), Unil: bend CS to same side. Bil: flex neck

Gross Anatomy (7 decks)

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