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Gross Anatomy > Spinal Cord And Dorsal Scapular Region > Flashcards

Spinal Cord And Dorsal Scapular Region Flashcards

1
Q

At what lvl does the spinal cord terminate by

A

L1/L2

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2
Q

The spinal dural sac terminates at what segment in the spine ?

A

S2

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3
Q

What are the spinal meninges

A

Dura mater
Arachnoid Mater
Pia mater

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4
Q

What is the deltoid purposeful action

A

Doing yoga poses with arms overhead(all fibers) reaching for (anterior fibers) and putting on ( posterior fibers) a seat belt

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5
Q

Deltoid muscular action

A

Clavicular (anterior) part flexes medially and rotates arm
Acromial (middle) part abducts arm
Spinal ( posterior) extends and laterally rotates arm

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6
Q

What nerve innervates the deltoid

A

Axillary nerve (C5- C6)

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7
Q

What are the attatchments of the deltoid

A

PA clavicle acromion and spine of scapula
DA deltoid tuberosity of humerus

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8
Q

Pectoralis major purposeful action

A

PA reaching across the body into an overhead cabinet putting on a seat belt

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9
Q

Pectoralis major muscular action

A

Humerus adductor and IR

Scapular protractor

Arm Horizontal Adduction

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10
Q

Attatchments of the pectoralis major

A

PA Clavicular head to clavicle

PA Sternocostal head
Sternum costal cartilage 1-6
External oblique muscle

DA lateral lip of intertubercular sulcus of humerus

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11
Q

Innervation of pectoralis major

A

Lateral and medial pectoral nerves
Clavicular head (C5-C6)
Sternolcostal head (C7-C8 T1)

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12
Q

Pectoralis minor purposeful activities

A

Taking a deep breath, walking on crutches

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13
Q

Pectoralis minor muscular activities

A

Scapular protraction

The scapula fixed
Assist in elevating the thorax during forced inhalation

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14
Q

Pectoralis minor attatchments

A

PA 3,4,5, ribs near their costal cartilage

DA coracoid process

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15
Q

Innervation of pectoralis minor attatchments

A

Medial pectoral nerve
(C8 T1)

Lateral pectoralis nerve (variable)

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16
Q

Infraspinatus purposeful activity

A

Playing racket sports or table tennis

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17
Q

Infraspinatus muscular activity

A

Externally rotate the shoulder
(GHJ)

Stabilize the head of humerus in glenoid cavity along with the other SITS muscles

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18
Q

Attatchements of infraspinatus

A

DA greater tubercle of humerus
PA infraspinous fossa

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19
Q

Innervation of infraspinatus

A

Suprascapular nerve (C5-C6)

20
Q

Teres minor purposeful action

A

Toileting and perineal care

21
Q

Teres major muscular action

A

Adduct shoulder (GHJ)

Internally Rotate the shoulder (GHJ)

22
Q

Teres major attatchments

A

PA posterior surface of inferior angle of the scapula

DA medial lip of intertubercular sulcus of the humerus

23
Q

Teres major innervation

A

Lower subscapular nerve
( C5-C6)

24
Q

Supraspinatus purposeful activity

A

Painting overhead or washing your head

25
Q

Supraspinatus muscle activity

A

Initiates and assits deltoid un abduction of arm
Stabilize the head of humerus in glenoid cavity along with the other SITS muscles

26
Q

Supraspinatus attatchments

A

PA Supraspinous fossa of scapula
DA greater tubercle of humerus

27
Q

Supraspinatus innervation

A

Suprascapular (C4,C5,C6)

28
Q

Teres minor purposeful action

A

Washing the back of the head and neck

29
Q

Teres minor muscular activity

A

Externally rotate the shoulder (GHJ)
Stabilize the head of humerus in glenoid cavity

30
Q

Teres minor attatchments

A

PA Lateral border of the scapula
DA greater tubercle of humerus

31
Q

Teres minor innervation

A

Axillary nerve (C5-C6)

32
Q

Subscapularis purposeful activity

A

Toileting, donning a bra, or throwing a baseball

33
Q

Subscapularis muscle activity

A

Internally rotate the shoulder
Stabilize the head in humerus in glenoid cavity

34
Q

Subscapularis of innervation

A

Upper and lower subscapular
(C5,C6,C7)

35
Q

Subscapularis attatchments

A

PA subscapular fossa
DA Lesser tuberosity of humerus

36
Q

Serrated anterior purposeful activity

A

Pushing open a heavy door

37
Q

Serratus anterior muscular activity

A

Protracts the scapula (ST joint)
Upwardly rotates the scapula ( St joint )
Holds it against thoracic wall

38
Q

Serratus anterior attatchments

A

PA lateral parts of upper 8 or 9 ribs
DA medial border of scapula

39
Q

Serratus anterior innervation

A

Long thoracic nerve (C5,C6,C7)

40
Q

Sternocleidomastoid muscle action

A

Unilaterally
Neck Unilaterally laterally flexion
Neck CONTRALATERAL rotation

Bilaterally
Neck extension
OA joints
Cervical vertebrae flexion
Superior cervical vertebrae extension with inferior vertebrae flexion
With cervical vertebrae fixed…manubrium and medial clavicle elevation

41
Q

Sternocleidomastoid innervation

A

Spinal accessory (CN XI)
Ventral rami (C3-C4)
Pain and proprioception

42
Q

Sternocleidomastoid purposeful action

A

Watching an athletic event socializing and driving

43
Q

Sternocleidomastoid attatchments

A

SA mastoid process and superior nuchal line

IA sternal head manubrium of sternum

IA clavicular head medial third of clavicle

44
Q

Platysma purposeful action

A

Facial expresion

45
Q

Platysma muscular action

A

Draws corner of mouth inferiorly and widens it
Draws skin of neck superiorly when teeth are clenched

46
Q

Platysma innervation

A

Cervical branch of facial nerve
(CN VII)

47
Q

Platysma attatchements

A

SA inferior border of mandible
Skin and subcutaneous tissues of lower face

IA pectoralis major and deltoid

Gross Anatomy (6 decks)

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