Anatomy Limbs 4 - Hand

Question 1

Where does the palmar aponeurosis extend from?

Answer 1

The flexor retinaculum

Question 2

What are the borders of the septa of the hand

Answer 2

Septa extends from palmar aponeurosis to little finger metacarpal (medially) and middle finger metacarpal (laterally)

Question 3

On the forearm, pronators and flexors are ?

Answer 3

Anterior

Question 4

On the forearm, extensors and supinators are?

Answer 4

Posterior

Question 5

What muscles are in the superficial anterior compartment of the forearm?

Answer 5

1. Pronator teres
2. Flexor carpi radialis
3. Palmaris longus
4. Flexor carpi ulnaris
5. Flexor digitorum superficialis

Question 6

What muscles are in the deep anterior compartment of the forearm?

Answer 6

1. Flexor digitorum profundus
2. Flexor pollicis longus
3. Pronator quadratus

Question 7

What are the groups of intrinsic muscles of the hand?

Answer 7

1. Thenar muscles
2. Adductor muscle
3. Hypothenar muscles
4. Interossei and lumbricals

Question 8

What muscles form the thenar muscles

Answer 8

1. Abductor pollicis brevis
2. Flexor pollicis brevis
3. Opponens pollicis

Question 9

What muscle forms the adductor muscle

Answer 9

Adductor pollicis

Question 10

What muscle forms the hypothenar muscles

Answer 10

1. Abductor digiti minimi
2. Flexor digiti minimi
3. Opponens digiti minimi

Question 11

What do lumbricals do?

Answer 11

Flex MCPS, extend IPJs

Question 12

What do palmar interossei do?

Answer 12

Adduct digits

Question 13

What do dorsal interossei do?

Answer 13

Abduct the digits

Question 14

In thumb movements, which movements have a long and short muscle acting?

Answer 14

Abduction (APL /APB)

Extension (EPL / EPB / APL)

Flexion (FPL/FPB)

Question 15

“Pollicis” muscles are supplied by which nerve?

Answer 15

Ulnar

Question 16

Thenar muscles are supplied by which nerve?

Answer 16

Median nerve

Question 17

Lumbricals extend from the palmar region to the dorsal region

Answer 17

Y

Question 18

Describe what PAD and DAB refers to?

Answer 18

PAD = Palmar interossei ADDUCT (thumb and little finger have their0 own adductors)

DAB = Dorsal interossei ABDUCT (there is no dorsal interossei by the thumb because the thumb has its own abductor)

Question 19

Explain the path of the flexor digitorum profundus and superficialis

Answer 19

FDP and FDS tendons pass underneath carpal tunnel beneath flexor retinaculum

Enters common synovial sheath then common digital sheath

Question 20

Does the thumb have its own sheath?

Answer 20

Y

Question 21

The fibrous digital sheath consists of 2 parts, which are?

Answer 21

Annular and cruciform

Question 22

FDP and FDS, which one runs further?

Answer 22

FDP goes more distally, to the distal phalanx

FDS goes more proximally to the middle phalanx

Question 23

What does the extensor expansion also attach to?

Answer 23

The lumbrical

Question 24

Which muscles are involved in radial deviation?

Answer 24

APL, FCR, ECRB, ECRL

Question 25

Which intercarpal joint articulates with the triquetrium but not the wrist?

Answer 25

Pisiform (it is a sesamoid bone)

Question 26

Lateral to medial, proximal row mnemonic for the intercarpal bones?

Answer 26

Some lovers try positions that they can't handle Scaphoid, lunate, triquetrium, pisiform Trapezium, trapezoid, capitate, hamate

Question 27

What do metacarphophalangeal joints do? | MCP

Answer 27

1. Flexion and extension 2. Abduction and adduction 3. Ulnar collateral ligament of the thumb

Question 28

What do interphalangeal joints do? IPJ

Answer 28

1. Flexion and extension only

Question 29

In the hand, there are palmar arches which anastomose with?

Answer 29

Deep arches

Question 30

The basilic vein join which structures to form axillary vein in the arm?

Answer 30

Venae comitantes

Question 31

Cephalic vein joins the axillary vein where?

Answer 31

In the axilla

Question 32

Where does superficial venous return of the hand begin?

Answer 32

Dorsal venous arch (network)

Question 33

Which nerve supplies all of the posterior muscles of the forearm?

Answer 33

Radial nerve

Question 34

Which nerve is the main nerve of the anterior compartment of the forearm?

Answer 34

Median nerve

Question 35

What does the ulnar nerve supply?

Answer 35

Main nerve of hand, also supplies FCU and ulnar Half of FDP

Question 36

What is the median nerve motor to?

Answer 36

Thenar muscles (APB, FPB, OP) and lumbricals 1 and 2

Question 37

What is the median nerve sensory to?

Answer 37

Palmar surface of the thumb, IF, MF, and half of RF

Question 38

How does the ulnar nerve enter the hand?

Answer 38

Over the flexor retinaculum (lateral to pisiform)

Question 39

The ulnar nerve divides into the superficial and deep branch. What is the superficial branh sensory to?

Answer 39

Palmar surfaces of LF and half of RF

Question 40

What is the deep branch of the ulnar nerve motor to?

Answer 40

1. Hypothenar muscles 2. Adductor pollicis 3. Lumbricals 3 and 4 4. All interossei

Question 41

Where does the radial nerve divide into the deep branch and superficial branch?

Answer 41

Just above the level of the elbow

Question 42

What does the deep branch of the radial nerve become?

Answer 42

Posterior interesses nerve (motor)

Question 43

What does the superficial branch of the radial nerve become?

Answer 43

Superficial radial nerve

Question 44

Does the radial nerve have any motor supply in the hand?

Answer 44

NO

Question 45

Which nerve gives sensory supply to the dorsum of the hand?

Answer 45

Radial nerve

Question 46

Which carpal bones have bony attachment for the flexor retinaculum?

Answer 46

Scaphoid, trapezium, pisiform, hamate

Question 47

What does the carpal tunnel contain?

Answer 47

1. Median nerve 2. FPL tendon 3. 4 tendons of FDP 4. 4 tendons of FDS

Question 48

What muscles does the power grip involve?

Answer 48

1. Long flexors of finger and thumb 2. Intrinsic muscles of palm 3. Extensors of wrist joint

Question 49

What muscles does the precision grip involve?

Answer 49

1. Wrist & fingers held in place by long flexors and extensors 2. Intrinsic muscles of hand carry out fine movements

Question 50

What muscles are mainly involved in the hook grip

Answer 50

Long flexors of the digits