LAB 7

Question 1

Joint type, articulation and movement: Sternoclavicular

Answer 1

Saddle joint

It articulates the sternal end of the clavicle with the manubrium of the sternum.

It causes up/down + ant/post scapular + clavicle movement.

Question 2

Joint type, articulation and movement: acromial clavicular

Answer 2

Plane joint

protraction-retraction, elevation-depression, and axial rotation.

Acromial end articulates with the scapula acromian

Question 3

Pec major movement

Answer 3

adducts, medially rotates, and transversely adducts arm at glenohumeral joint.

Question 4

Trapezius movement

Answer 4

trapezius elevates, depresses, and retracts the scapula

Question 5

Lats movement

Answer 5

internal rotation, adduction and extension of the arm

Question 6

Delts movement

Answer 6

Arm abduction, which means raising your arm out to the side of your body.

Question 7

Glenohumeral joint type, location and movement

Answer 7

ball and socket

glenoid fossa of scapula and humeral head

circumduction, rotation

Question 8

Origin and insertion: Bicep Brachii

Question 9

Aconeus origin, insertion and movement

Answer 9

O: lateral epicondyle of the humerus
I: lateral surface of olecranon
A: Assist in forearm extension at the elbow joint and stabilizes the elbow joint

Question 10

Origin, Insertion and action of triceps brachii

Answer 10

O: infragelnoid tubercle of scapular , posterior surface of humerus, posterior surface of the humerus

I: Olecranon of ulna and forearm fascia

Action: extension of the forearm and extension + adduction of the arm

Question 11

Origin and insertion of the biceps brachii

Answer 11

O: Coracoid process of scap supraglenoid ubercle of scap
I: Radial uberosity
A: supinates and flexes forearm

Question 12

Origin, insertion and action of flexor digitorum superficialis

Answer 12

O: medial epicondyle of the humerus and proximal half of ula
I: side of phalenges middle 2 + 5
A: metacaropophageal and proximal interphalnges joints 2 - 5 finger flexion

Question 13

Origin, insertion and action of the pronators teres

Answer 13

Medial supracondylar ridge of the humerus + coronoid process of the ulna
I: lateral radial surface
O: pronation of the forearm at the elbow

Question 14

Origin, insertion and action of the flexor carpi radialis

Answer 14

O: medial epicondyle of the humerus
I: base of metacarpal bones 2 - 5
A - Wrist abduction

Question 15

Origin, insertion and action of the palmaris longus

Answer 15

Medial epicondyle of the humerus
I: Flexor retinaculum palmer aponeurosis
A: wrist flexion

Question 16

Origin, insertion and action of the flexor carpi ulnaris

Answer 16

O: medial epicondyle of humerus and olecarnon and posterior of the ulna
I: pisiform, hamate and 5th metacarpal
A: Wrist flexion and abduction

Question 17

Origin, insertion and action of the brachioradialis

Answer 17

Lateral supracondylar ridge of the humerus
Muscular septum of the arm
I: Styloid process of the radius
A: forearm flexion

Question 18

Origin, insertion and action of the extensor carpi radialis longus

Answer 18

Lateral epicondyle and lateral supracondylar ridge of the humerus
I: dorsal surface of 2nd metacarpal of the index finger
A: hand extension and hand abduction

Question 19

Origin, insertion and action of the extensor carpi radialis brevis

Answer 19

O: lateral epicondyle of the humerus
I: Posterior part of the base of metacarpal 3
A: Hand extension and hand abdcution

Question 20

Origin, insertion and action of the extensor digitorum

Answer 20

O: lateral epicondyle of the humerus
I: Digits 2 - 4 extensor expansions
A: Finger extension

Question 21

Origin, insertion and action of the extensor digiti minimi

Answer 21

Lateral epicondyle of the humerus
I: extensor expansion of digit 5
A: finger extension

Question 22

Extensor carpi ulnaris origin, insertion and action

Answer 22

Lateral epicondylar ridge of the humerus and pos border of the ulna
I: metacarpal 5 base
A: hand extension and adduction