Lab 7: Shoulder, Brachium

Question 1

Brachium Muscles Compartment Division

Answer 1

Anterior: Brachialis, Biceps Brachii, Coracoidbrachialis

Posterior: 3 heads of triceps

Question 2

Blood supply and nerve supply for anterior/post brachium compartment?

Answer 2

Brachial A/ Musculocutaneous N

Brachial Profunda A/ Radial N

Question 3

Musculocutaneous Pathway in brachium?

Answer 3

pierce coracobrachialis, travels between biceps and brachialis, emerges laterally on LAC

Question 4

Pathway of Ulna N?

Answer 4

goes to posterior compartment through medial intramuscular septum and travels behind medial epicondyle

Question 5

Pathway of Axillary N?

Answer 5

Join PHCA to travel around surgical neck of humerus to supply deltoids

Question 6

Pathway of Radial N?

Answer 6

travels with brachial profunda into post compartment around spiral groove to supply triceps

Question 7

Border of Quadrangular Space? Contents of this space?

Answer 7

Superior: teres minor

Posterior: teres major

Lateral: Humerus

Medial: Long head of triceps

Question 8

Muscles attachments of Rotator Cuff?

Answer 8

Supraspinatus

Infraspinatus

Teres Minor

Subscapularis

Question 9

What nerve travel around spiral groove?

Answer 9

Radial N

Question 10

OIANB of biceps brachii?

Answer 10

Short head; Corachoid process of scapula

Long head: supraglenoid tubercle of scapula

Question 11

Insertions of biceps

Answer 11

Tendons: Radial Tuberosity

Bicep Aponeurosis: Deep fascia on ulna

Question 12

ANB of biceps?

Answer 12

Supination of forearm

Flexion of elbow

Short head: flexion of shoulder

Long head: Abduction of externally rotated arm

Question 13

OIANB of Coracobrachialis

Answer 13

Tip of coronoid process of scapula

Middle 1/3 of medial humerus

Flexion of shoulder

Adduction of shoulder

Musculocutaneous N

Brachial A

Question 14

OIANB of brachialis?

Answer 14

Lower half of anterior humerus

Ulnar tuberosity/ Coronoid process of ulna

Flexion of elbow

Musculocutaneous

Brachial A

Question 15

Origin of triceps?

Answer 15

Long head: Infraglenoid tubercle of scapula

Lateral: Post HUmerus above spiral groove

Medial: _________ below spiral groove

Question 16

IANB of Triceps

Answer 16

Olecranon process of ulna

Extension of elbow

long head: extension of shoulder

Radial N

Brachial Profunda

Question 17

OIANB of supraspinatus

Answer 17

Supraspinous process of scapula

Superior facet of greater tubercle of humerus

abduction of shoulder/ stabilize glenohumeral joint

suprascapular A + N

Question 18

OIANB of infraspinatus

Answer 18

Infraspinous process of scapula

Middle facet of greater tubercle of humerus

Lateral rotation of shoulder

suprascapular A + N

Question 19

OIANB of teres minor

Answer 19

Upper 2/3 of axillary border of scapula

Inferior facet of greater tubercle of humerus

lateral rotation of shoulder/ Stabilze glenohumeral Joint

Axillary N
PHCA

Question 20

OIANB of teres major

Answer 20

Dorsal surface of inferior border of scapula

Upper 1/3 of axillary border of scapula

Lesser tubercle of humerus

Extension/ Adduction/ Internal Rotation of shoulder

Lower subscapular N (C3-C6)

Circumflex Scapular A

Question 21

OIANB of Subscapularis

Answer 21

subscapular spine of scapula

Lesser tubercle of humerus

Internal rotation of shoulder/ Stabilize glenohumeral joint

Upper/Lower subscapular N

Circumflex Scapular A

Question 22

Origins/ Insertion of Deltoids?

Answer 22

Anterior: Lateral third of clavicle

Middle: lateral portion of acromion

Posterior: Spine of scapula

Deltoid tuberosity of humerus

Question 23

ANB of deltoids?

Answer 23

Ant: Flexion/Horizontal Adduction/Internal rotation of shoulder

Middle: Abduction of shoulder

Post: Extension/ Abduction/ Lateral Rotation of shoulder

Axillary N

PHCA

Question 24

What part of clavicle is this?

Answer 24

Sternal end of clavicle

Question 25

What part is this of clavicle? What side is this? Is it the right position? How do you know?

Answer 25

Acromial end of the clavicle left side Yes because acromion end of clavicle face down

Question 26

What surface of clavicle is this? Is this a right position of clavicle on body?

Answer 26

Superior Surface of Clavicle Yes because we can see superior surface of clavicle

Question 27

What muscle attach the green arrow?red arrow? What surface of clavicle is this?

Answer 27

Pec major Deltoids Superior surface

Question 28

What surface of clavicle is this? How do you know?

Answer 28

Inferior Surface of clavicle Because you can see the conoid tubercle of the clavicle

Question 29

What muscle attach to the blue arrow? Yellow arrow? What is red arrow part of clavicle?

Answer 29

Subclavius Deltoids Conoid tubercle of clavicle

Question 30

What is it called for M? K? J? I?

Answer 30

Jugular Notch of the Sternum Manubrium of Sternum Body of sternum Xiphoid Process of Sternum