Spinal Cord And Dorsal Scapular Region

Question 1

At what lvl does the spinal cord terminate by

Answer 1

L1/L2

Question 2

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

Answer 2

S2

Question 3

What are the spinal meninges

Answer 3

Dura mater
Arachnoid Mater
Pia mater

Question 4

What is the deltoid purposeful action

Answer 4

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

Question 5

Deltoid muscular action

Answer 5

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

Question 6

What nerve innervates the deltoid

Answer 6

Axillary nerve (C5- C6)

Question 7

What are the attatchments of the deltoid

Answer 7

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

Question 8

Pectoralis major purposeful action

Answer 8

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

Question 9

Pectoralis major muscular action

Answer 9

Humerus adductor and IR

Scapular protractor

Arm Horizontal Adduction

Question 10

Attatchments of the pectoralis major

Answer 10

PA Clavicular head to clavicle

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

DA lateral lip of intertubercular sulcus of humerus

Question 11

Innervation of pectoralis major

Answer 11

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

Question 12

Pectoralis minor purposeful activities

Answer 12

Taking a deep breath, walking on crutches

Question 13

Pectoralis minor muscular activities

Answer 13

Scapular protraction

The scapula fixed
Assist in elevating the thorax during forced inhalation

Question 14

Pectoralis minor attatchments

Answer 14

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

DA coracoid process

Question 15

Innervation of pectoralis minor attatchments

Answer 15

Medial pectoral nerve
(C8 T1)

Lateral pectoralis nerve (variable)

Question 16

Infraspinatus purposeful activity

Answer 16

Playing racket sports or table tennis

Question 17

Infraspinatus muscular activity

Answer 17

Externally rotate the shoulder
(GHJ)

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

Question 18

Attatchements of infraspinatus

Answer 18

DA greater tubercle of humerus
PA infraspinous fossa

Question 19

Innervation of infraspinatus

Answer 19

Suprascapular nerve (C5-C6)

Question 20

Teres minor purposeful action

Answer 20

Toileting and perineal care

Question 21

Teres major muscular action

Answer 21

Adduct shoulder (GHJ)

Internally Rotate the shoulder (GHJ)

Question 22

Teres major attatchments

Answer 22

PA posterior surface of inferior angle of the scapula

DA medial lip of intertubercular sulcus of the humerus

Question 23

Teres major innervation

Answer 23

Lower subscapular nerve
( C5-C6)

Question 24

Supraspinatus purposeful activity

Answer 24

Painting overhead or washing your head

Question 25

Supraspinatus muscle activity

Answer 25

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

Question 26

Supraspinatus attatchments

Answer 26

PA Supraspinous fossa of scapula DA greater tubercle of humerus

Question 27

Supraspinatus innervation

Answer 27

Suprascapular (C4,C5,C6)

Question 28

Teres minor purposeful action

Answer 28

Washing the back of the head and neck

Question 29

Teres minor muscular activity

Answer 29

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

Question 30

Teres minor attatchments

Answer 30

PA Lateral border of the scapula DA greater tubercle of humerus

Question 31

Teres minor innervation

Answer 31

Axillary nerve (C5-C6)

Question 32

Subscapularis purposeful activity

Answer 32

Toileting, donning a bra, or throwing a baseball

Question 33

Subscapularis muscle activity

Answer 33

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

Question 34

Subscapularis of innervation

Answer 34

Upper and lower subscapular (C5,C6,C7)

Question 35

Subscapularis attatchments

Answer 35

PA subscapular fossa DA Lesser tuberosity of humerus

Question 36

Serrated anterior purposeful activity

Answer 36

Pushing open a heavy door

Question 37

Serratus anterior muscular activity

Answer 37

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

Question 38

Serratus anterior attatchments

Answer 38

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

Question 39

Serratus anterior innervation

Answer 39

Long thoracic nerve (C5,C6,C7)

Question 40

Sternocleidomastoid muscle action

Answer 40

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

Question 41

Sternocleidomastoid innervation

Answer 41

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

Question 42

Sternocleidomastoid purposeful action

Answer 42

Watching an athletic event socializing and driving

Question 43

Sternocleidomastoid attatchments

Answer 43

SA mastoid process and superior nuchal line IA sternal head manubrium of sternum IA clavicular head medial third of clavicle

Question 44

Platysma purposeful action

Answer 44

Facial expresion

Question 45

Platysma muscular action

Answer 45

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

Question 46

Platysma innervation

Answer 46

Cervical branch of facial nerve (CN VII)

Question 47

Platysma attatchements

Answer 47

SA inferior border of mandible Skin and subcutaneous tissues of lower face IA pectoralis major and deltoid