The pectoral girdle

Question 1

What is another term for the arm

Answer 1

The brachium

Question 2

If you rotate the glenoid clockwise what kind of rotation is this called

Answer 2

Superior rotation

Question 3

Where does the clavicle attach to the scapula

Answer 3

At the clavicular facet on the acromion

Question 4

What is the joint going the clavicle to the scapula

Answer 4

Acromioclavicular joint

Question 5

What is the joint joining the clavicle to the sternum

Answer 5

Sternoclavicular joint

Question 6

Where does deltoid insert on the clavicle

Answer 6

At the deltoid tubercle on the anterior lateral part of clavicle

Question 7

Where does trapeziums insert on clavicle

Answer 7

Posterior lateral surface of clavicle

Question 8

What attaches tot he medial anterior surface of clavicle

Answer 8

Pec major

Question 9

What are the borders of the scapula called

Answer 9

Superior, medial and lateral

Question 10

What are the angles of the scapula called

Answer 10

Superior inferior and glenoid fossa

Question 11

What are the protuberances of the scapula called

Answer 11

The acromion and the coracoid process and the spine

Question 12

What kind of joint is the sternoclavicular joint

Answer 12

A synovial joint, a saddle shaped joint that allows for a lot movement.

Question 13

What are the ligaments of the sternoclavicular joint

Answer 13

Anterior and posterior sternoclavicular ligaments. Costoclavicular ligament. Interclavicular ligament.

Question 14

Name the muscle that sits underneathh the clavicle lateral to the costoclavicular ligmanet

Answer 14

Subclavius (inserts in subclavian groove in clavicle)

Question 15

What kind of joint is the acromioclavicular joint

Answer 15

Synovial joint which holds an intraarticular disc.

Question 16

What are the ligaments supporting the acromioclavicular joint

Answer 16

The coracoclavicular ligament (two parts the conoid and the trapezoid) and the acromioclavicular ligament

Question 17

What is the third joint of the pectoral girdle

Answer 17

The conceptual joint. Between medial border of scapula and thorax.

Question 18

Describe the trapezius muscle

Answer 18

Origin from the skull down spine to T12. Inserts in the anatomical horse shoe which is made from the superior border of the clavicle and acromium and spine of the scapula. Broken into superior middle and inferior portions. Can work together or separately.
Nerve is a cranial nerve ‘accessory’

Question 19

Describe levator scapulae

Answer 19

Origin from transverse processes of cervical vertebra. Inserts into acromium. Elevates the scapula.
Dorsal scapula nerve

Question 20

Describe rhomboid minor and major

Answer 20

Origin down spinous processes to about T6. Insert along medial border of scapula. Retract scapula. Dorsal scapula nerve.

Question 21

Describe latissimus dorsi

Answer 21

Origin spinous processes T7-S5. But with big broad aponeurosis. Inserts into the intertubucular groove anterior humerus. Adducts the humerus. Internally rotates humerus. Nerve thoracodorsal.

Question 22

What muscle is well developed in surfers and swimmers

Answer 22

Latissmus dorsi and pectoralis major as lots of arm adduction against resistance

Question 23

Describe pectoralis major

Answer 23

Origin anterior medial clavicle and sternum. .. Inserts lateral lip of intertubercular grove (anterior humerus). Humerus adductionInternal rotation. Nerve lateral and medial pectoral n.

Question 24

Describe pectoralis minor

Answer 24

Origin ribs 3-5. Insertion coracoid process. Depresses and protracts scapula. N. medial pectorial n.

Question 25

Describe subclavius

Answer 25

Origin 1st rib cartilage insertion lateral clavicle. Stabilises clavicle. N C5

Question 26

What occurs in ‘saturday night palsy’

Answer 26

There is a neurovascular bundle that runs inferior to the coracoid process deep to pec. minor. If the arm is abducted for too long/ too far pec minor compresses the bundle against the process.

Question 27

Describe serratus anterior

Answer 27

origin ‘serrated edge’ lateral anterior surface of ribs. Runs superficial to the scapula and inserts on its lateral border. The boxers muscle as it protracts the scapula. N. Long thoracic nerve.