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Anatomy of the Limbs > The shoulder and arms > Flashcards

Flashcards in The shoulder and arms Deck (71)
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1

What are the two main processes coming off the scapula?

Coracoid process
Acromion process

2

What are the differences between the anatomical and surgical necks of the humerus?

Anatomical – between the head of the humerus and everything else
Surgical – the main narrowing of the distal humerus – it is the most common site for fractures of the humerus

3

What are the three fossae of the scapula?

Supraspinous
Infraspinous
Subscapular

4

Which part of the scapula articulates with the humerus?

Glenoid cavity

5

On which bones are deltoid tubercles found?

Spine of the scapula
Humerus

6

What is the name given to the distinctive notch on the scapula?

Suprascapular notch

7

What is the name given to the groove between the greater and lesser tubercles of the humerus?

Intertubercular sulcus (bicipital groove)

8

What are the two distinctive protrusions on the lateral third of the clavicle and what are their roles?

Conoid tubercle
Trapezoid line
They are the point of attachment of the conoid ligament and trapezoid ligament (both part of the coracoclavicular ligament)

9

What are the names of the three fossae at the distal end of the humerus?

Anterior – coronoid and radial fossae
Posterior – olecranon fossa

10

What are the names given to the two ridges on either side of the distal end of the humerus?

Medial supracondylar ridge
Lateral supracondylar ridge

11

What are the five muscle compartments of the region?

Anterior pectoral
Posterior pectoral
Intrinsic shoulder
Anterior compartment of arm
Posterior compartment of arm

12

Which muscles make up the anterior pectoral compartment?

Pectoralis major
Pectoralis minor
Serratus anterior
Subclavius

13

What are the attachments of pectoralis major?

Medial 1/2 of the clavicle + sternum + part of costal margin
Lateral lip of intertubercular sulcus

14

What are the actions of pectoralis major?

Adducts and medially rotates the shoulder

15

Which nerve innervates pectoralis major?

Lateral pectoral nerve

16

What are the attachments of pectoralis minor?

Ribs 2-5
Coracoid process

17

Which nerve innervates pectoralis minor?

Medial pectoral nerve

18

What are the attachments of subclavius?

1st costochondral joint
Clavicle

19

Which nerve innervates subclavius?

Subclavian nerve

20

What are the attachments of serratus anterior?

Medial border of the costal surface of the scapula
Anteriorly attaches to the ribs (1-9)

21

Which nerve innervates serratus anterior?

Long-thoracic nerve

22

What can damage to the long thoracic nerve cause?

Winging of the scapula

23

Which muscles make up the posterior pectoral compartment?

Trapezius
Latissimus dorsi
Levator scapulae
Rhomboids (minor and major)

24

What is the motor supply to trapezius?

Accessory nerve (CN XI)

25

Describe the attachments of latissimus dorsi.

Thoracolumbar fascia and posterior 1/3 of the iliac crest
Floor of the intertubercular sulcus

26

Which nerve innervates latissimus dorsi?

Thoraco-dorsal nerve

27

What movement is latissimus dorsi responsible for?

Extends, adducts and rotates the humerus

28

Describe the attachments of the rhomboids.

Both attach distally to the medial border of the scapula
Rhomboid minor attaches proximally to the spinous processes of C7 and T1
Rhomboid major attaches proximally to the spinous processes of T2-T5

29

Which nerve supplies the rhomboids?

Dorsal scapular nerve

30

What movement are the rhomboids responsible for?

Retracts, rotates and fixes the scapula