P2- FITB & TF ( shoulder joints& muscle)

Question 1

the most mobile joint in the body and is commonly referred to as the shoulder joint.

Answer 1

glenohumerL joint

Question 2

a ball-and-socketjoint formed between the head of the humerus and the glenoid cavity of the scapula.

Answer 2

glenohumeral joint

Question 3

a fibrocartilaginous ring that deepens the glenoid cavity and provides stability to the glenohumeral joint.

Answer 3

glenoid labrum

Question 4

a group of muscles and tendons that surround the glenohumeral joint and provide stability and movement.

Answer 4

rotator cuffs muscle

Question 5

The four muscles of the rotator cuff are

Answer 5

supraspinatus, infraspinatus, teres minor, subscapularis

Question 6

muscle responsible for initiating abductionof the arm.

Answer 6

supraspinatus

Question 7

muscle responsible for external rotation of the arm.

Answer 7

infraspinatus, and teres minor

Question 8

muscle responsible for internal rotation of arm

Answer 8

subscapularis

Question 9

a gliding joint between the acromion of the scapula and the distal end of the clavicle.

Answer 9

acromioclavicular

Question 10

the only bony connection between the upper limb and the axial skeleton.

Answer 10

sternoclavicular joint

Question 11

a functional joint between the scapula and the thoracic wall,allowing movement of the scapula.

Answer 11

scapulothoracic joint

Question 12

ligament connects the clavicle to the coracoid process of the scapula

Answer 12

coracoclavicular joint and it is provides stability to the acromioclavicular joint.

Question 13

intrinsic ligaments that contribute to the stability of the glenohumeral joint.

Answer 13

glenohumeral ligament

Question 14

muscle that has two heads

Answer 14

biceps brachii : long and short head

Question 15

Thelong head of the biceps brachiioriginates from

Answer 15

thesupraglenoid tubercleof the scapula and passes through the glenohumeral joint.

Question 16

The deltoid muscle is

Answer 16

large,triangular muscle that covers the glenohumeral joint and is responsible forabduction,flexion,andextensionof the arm.

Question 17

The pectoralis major muscle is

Answer 17

large,fan-shaped muscle that originates from the clavicle,sternum,and ribs and inserts on thehumerus.

Question 18

The pectoralis minor muscle originates from

Answer 18

the ribs and inserts on thecoracoid processof the scapula

Question 19

The latissimus dorsi muscle is

Answer 19

the largest muscle of the back and is responsible for adduction and extensionof the arm.

Question 20

The trapezius muscle is

Answer 20

a large,superficial muscle that covers the upper back and neck and is responsible for scapular movement.

Question 21

The levator scapulae muscle originates from

Answer 21

the neck and inserts on thesuperior angleof the scapula.

Question 22

The rhomboid muscles (major &minor)

Answer 22

are responsible for retraction of the scapula.

Question 23

Theserratus anterior muscle originates from

Answer 23

the ribs and inserts on the medial border of the scapula,facilitating protraction.

Question 24

The teres major muscle is responsible

Answer 24

for adduction and internal rotation of the arm

Question 25

The coracobrachialis muscle originates from

Answer 25

the coracoid process and inserts on the humerus,assisting in flexion and adduction of the arm.

Question 26

The glenohumeral joint is the most stable joint in the human body

Answer 26

**False** It is one of the most mobile but least stable joints

Question 27

The rotator cuff muscles are primarily responsible for shoulder stabilization.

Answer 27

**TRUE**

Question 28

The acromioclavicular joint is a ball-and-socket joint.

Answer 28

**false** it is gliding joint

Question 29

The coracoclavicular ligament stabilizes the acromioclavicular joint.

Answer 29

**TRUE**

Question 30

The glenoid labrum is made of hyaline cartilage.

Answer 30

**FALSE** it is made of fibrocartilage

Question 31

The long head of the biceps brachii tendon passes through the glenohumeral joint.

Answer 31

**TRUE**

Question 32

The sternoclavicular joint is the only bony connection between the upper limb and the axial skeleton.

Answer 32

**TRUE**

Question 33

The glenohumeral joint is inherently unstable due to its shallow socket.

Answer 33

**TRUE**

Question 34

The coracohumeral ligament connects the coracoid process to the humerus.

Answer 34

**TRUE**

Question 35

The glenoid cavity is deep and provides significant stability to the glenohumeral joint.

Answer 35

**FALSE** The glenoid cavity is shallow,contributing to the joint's instability.

Question 36

The deltoid muscle is the primary muscle responsible for shoulder abduction.

Answer 36

**TRUE**

Question 37

The pectoralis major muscle originates from the clavicle,sternum,and ribs and inserts on the humerus.

Answer 37

**TRUE**

Question 38

The latissimus dorsi muscle is responsible for shoulder flexion.

Answer 38

**FALSE** It is responsible for shoulder extension and adduction.

Question 39

The teres minor muscle assists in shoulder adduction.

Answer 39

**FALSE** It assists in external rotation.

Question 40

The supraspinatus muscle is responsible for initiating shoulder abduction.

Answer 40

**TRUE**

Question 41

The subscapularis muscle is part of the rotator cuff and assists in shoulder external rotation.

Answer 41

**FALSE** It assists in internal rotation.

Question 42

The trapezius muscle is responsible for scapular elevation and retraction.

Answer 42

**TRUE**

Question 43

The levator scapulae muscle is responsible for scapular depression.

Answer 43

**FALSE** It is responsible for scapular elevation.

Question 44

The rhomboid muscles are responsible for scapular retraction.

Answer 44

**TRUE**

Question 45

The serratus anterior muscle is responsible for scapular protraction.

Answer 45

**TRUE**

Question 46

The infraspinatus muscle assists in shoulder internal rotation.

Answer 46

**FALSE** it assist in external rotation

Question 47

The teres minor muscle is responsible for shoulder adduction.

Answer 47

**FALSE** t assists in external rotation.

Question 48

The subscapularis muscle originates from the subscapular fossa.

Answer 48

**TRUE**

Question 49

The supraspinatus muscle originates from the infraspinous fossa.

Answer 49

**FALSE** It originates from the supraspinous fossa.

Question 50

The deltoid muscle is innervated by the radial nerve.

Answer 50

**TRUE**

Question 51

The teres minor muscle is responsible for shoulder adduction.

Answer 51

**FALSE** It assists in external rotation.

Question 52

The pectoralis major muscle is innervated by the musculocutaneous nerve.

Answer 52

**FALSE** It is innervated by the lateral and medial pectoral nerves.

Question 53

The latissimus dorsi muscle is innervated by the thoracodorsal nerve.

Answer 53

**TRUE**

Question 54

The trapezius muscle is innervated by the accessory nerve(CN XI).

Answer 54

**TRUE**

Question 55

The levator scapulae muscle is innervated by the dorsal scapular nerve.

Answer 55

**TRUE**

Question 56

The serratus anterior muscle is innervated by the long thoracic nerve.

Answer 56

**TRUE**