Week 2: Upper limb anatomy

Question 1

What is the point of attachment of the upper limb and the rest of the skeleton?

Answer 1

Clavicle to manubrium

Question 2

What bones make up the pectoral girdle?

Answer 2

Clavicle and scapula

Question 3

What bones make up the arm?

Answer 3

Humerus

Question 4

What are the joints in the upper limb defined as structurally?

Answer 4

Synovial

Question 5

What are the features of synovial joints?

Answer 5

1. space between joints. 2. joint cavity (contains synovial fluid) 3. Articular cartilage 4. Synovial membrane 5. Joint capsule 6. Ligament

Question 6

How many axes of rotation does a ball and socket joint have? Example.

Answer 6

3 (flex,ex, abd,add, med/lat rot) e.g. shoulder

Question 7

Axes of rotation of Condyloid/ellipsoid Joint? Example.

Answer 7

2 (flex/ex, abd/add) e.g. wrist

Question 8

Axes of rotation of Saddle Joint? Example.

Answer 8

2 (flex/ext, abd/add) e.g. 1st carpometacarpal joint at base of thumb

Question 9

Axes of rotation of Hinge Joint? Example.

Answer 9

1 (flex/ext) e.g. Elbow

Question 10

Axes of rotation of Pivot Joint?

Answer 10

1 (rotation only) e.g. proximal radioulnar

Question 11

Axes of rotation of a Plane / gliding?

Answer 11

Some gliding e.g. intercarpal joints

Question 12

How many directions can scapula move?

Answer 12

6- Elevation, depression, retraction, protraction, upward and downward roation

Question 13

Muscles that FLEX Shoulder joint

Answer 13

Deltoid (anterior fibres), biceps brachii contributes

Question 14

Muscles that EXTEND Shoulder joint

Answer 14

Deltoid (posterior fibres), Latissimus dorsi

Question 15

Muscles that ABDUCT Shoulder joint

Answer 15

Deltoid

Question 16

Muscles that ADDUCT Shoulder joint

Answer 16

Pectoralis major

Question 17

Muscles that MEDIALLY ROTATE Shoulder joint

Answer 17

Pec major, latissimuss dorsi

Question 18

Elevate scapula?

Answer 18

Trapezius - descending fibres

Question 19

Depress scapula?

Answer 19

Trapezius - ascending fibres

Question 20

Retract scapula?

Answer 20

Trapezius - transverse fibres

Question 21

Upward rotation of scapula?

Answer 21

Ascending and descending fibres of trapezius

Question 22

Flex elbow?

Answer 22

Biceps brachii, brachialis

Question 23

Extend elbow?

Answer 23

Triceps brachii

Question 24

Supinate forearm?

Answer 24

Bicepcs brachii, (others)

Question 25

Flexes wrist?

Answer 25

flexor carpi radialis, felxor digitorum superficialis

Question 26

Abducts wrist joint?

Answer 26

flexor carpi radialis

Question 27

What does flexor digitorum superficialis do?

Answer 27

Flexes proximal interphalangeal joint,

metacarpophalangeal joint, wrist joint

Question 28

Adducts wrist?

Answer 28

Extensor carpi ulnaris

Question 29

Extends wrist?

Answer 29

Extensor carpi ulnaris, extensor digitorum

Question 30

extensor digiti minimi

Answer 30

e.g. extensor digiti minimi • Extends interphalangeal joints and
metacarpophalangeal joint of the little finger

Question 31

Muscles on anterior forearm?

Answer 31

Flexor digitorum superficialis, flexor carpi radialis

Question 32

Muscles on posterior foearm?

Answer 32

Extensor digitorum, extensor carpi ulnaris, extensor digiti minimi

Question 33

Major nerves to upper limb?

Answer 33

Brachial plexus

Question 34

Major nerves of brachial plexus?

Answer 34

Musculocutaneous, ulnar , radial, median

Question 35

Motor nerve for anterior arm?

Answer 35

Musculocutaneous

Question 36

Motor nerve for posterior arm?

Answer 36

Radial nerve

Question 37

Motor nerve for posterior forearm?

Answer 37

Radial nerve

Question 38

Motor nerve for most intrinsic hand muscles?

Answer 38

Ulnar nerve

Question 39

What nerve passes near the radial nerve at elbowq?

Answer 39

Lateral cutaneous nerve of forearm

Question 40

Motor nerve for most anterior forearm?

Answer 40

Median nerve

Question 41

Motor nerve for thenar eminence?

Answer 41

Median nerve

Question 42

Lateral cutaneous nerve of forearm - Sensory

Answer 42

Lateral forearm

Question 43

Radial nerve - Sensory

Answer 43

Posterior arm, middle posterior forearm, dorsal surface lateral hand

Question 44

Ulnar nerve -Sensory

Answer 44

Medial palm and Medial 1.5 digits

Question 45

Median nerve - Sensory

Answer 45

Lateral palm; palmar surface and lateral 3.5 digits