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Advanced Anatomy > Forearm > Flashcards

Forearm Flashcards

1
Q

Forearm anterior compartment has how many muscles?

A

8

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2
Q

All the forearm anterior muscles are innervated by what nerve? All except?

A

median

1.5 muscles

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3
Q

Forearm posterior compartment has how many muscles?

A

11

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4
Q

All the posterior compartment muscles are innervated by the …nerve.

A

radial

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5
Q

Anterior and posterior compartments of the forearm are separated by the …

A

interosseous membrane

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6
Q

Two major groups of the anterior forearm muscles

A

superficial

deep

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7
Q

Superficial group forearm muscles

A 
pronator teres
flexor carpi radialis
palmaris longus
flexor carpi ulnaris
flexor digitorum superficialis
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8
Q

Deep group of forearm muscles

A

flexor digitorum profundus
flexor pollicis longus
pronator quadratus

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9
Q

The superficial group of forearm muscles attach via the medial epicondyle through a common …. and they all cross at the …joint.

A

flexor tendon

elbow

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10
Q

What muscle is a strong pronator?

A

pronator teres

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11
Q

What muscle flexes and radially deviates the wrist simultaneously?

A

flexor carpi radialis

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12
Q

What muscle is absent in 17% caucasians?

A

palmaris longus

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13
Q

What muscle inserts on the pisiform and hook of hamate?

A

flexor carpi ulnaris

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14
Q

What is the function of flexor carpi ulnaris?

A

flex and adduct the hand/wrist

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15
Q

What nerve innervates the flexor carpi ulnaris?

A

ulnar nerve

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16
Q

What does the flexor digitorum superficialis do and what nerve innervates it?

A

flexes the proximal interphalangeal joint and median nerve

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17
Q

Where does the flexor digitorum profundus originate?

A

ulna and anterior interosseous membrane

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18
Q

What does the digitorum profundus do?

A

flexes the distal interphalangeal joint

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19
Q

The lateral part of the digitorum profundus that serves the 2nd and 3rd digits, is innervated by .. nerve. The medial part that serves the 4th and 5th digits is innervated by the …nerve.

A

median

ulnar

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20
Q

Flexor pollicis longus originates from..

A

radius and anterior interosseous membrane

21
Q

What is the only muscle that flexes the distal interphalangeal joint of the thumb?

A

flexor pollicis longus

22
Q

What nerve innervates the flexor pollicis longus?

A

median

23
Q

What does the pronator quadratus do?

A

pronates the forearm

24
Q

The ulnar nerve innervates the … muscle of the ….

A

flexor carpi ulnaris

flexor digitorum profundus

25
Q

Muscular branch of the median nerve innervates all the … muscles except the flexor carpi ulnaris and the medial half of FDP.

A

flexor forearm

26
Q

Branches of the median nerve

A

anterior interosseous nerve
palmar cutaneous branch of median nerve
recurrent branch of median nerve

27
Q

What is anterior interosseous syndrome?

A

inability to form an okay sign. There is an impairment of the innervation of flexor digitorium profundus and flexor pollicis longus muscle

28
Q

The recurrent branch of the median nerve loops around the distal border of the ligament and supplies the 3… muscles.

A

thenar

29
Q

The palmar carpal ligament is the continuation of the…

A

extensor reticulum

30
Q

Median nerve injury sign

A

hand of benediction when asked to form a fist

31
Q

Ulnar nerve continues in between the … and …

A

flexor carpi ulnaris

FDP

32
Q

Ulnar canal or canal of guyon is a …

A

groove between the pisiform and the hook of hamate bones

33
Q

Muscular branches of the ulnar nerve supplies the…

A

flexor carpi ulnaris and the meidal/unlar half of the FDP

34
Q

Ulnar nerve injury characterisitc

A

clawhand

35
Q

Cubital tunnel syndrome

A

ulnar nerve compression by flexor carpi ulnaris muscle

36
Q

Branches of the ulnar artery

A

anterior interosseous artery

posterior interosseous artery

37
Q

Radial artery is used as a ….for the separation of the flexors and extensor of the forearm.

A

demarcation

38
Q

3 lateral posterior forearm muscles

A

brachioradialis, extensor carpi radialis longus, extensor carpi radialis brevis

39
Q

3 posterior forearm muscles for the thumb

A

abductor pollicis longus
extensor pollicis brevis
extensor pollicis longus

40
Q

3 posterior forearm muscle for the digits

A

extensor digitorum
extensor digiti minimi
extensor indicis
plus the extensor carpi ulnaris

41
Q

Which muscle flexes the elbow joint: drinking muscle?

A

brachioradialis

42
Q

What muscle extends, abducts, the wrist when clenching a fist?

A

extensor carpi radialis longus

and extensor carpi radialis brevis

43
Q

Where is extensor carpi radialis in relation to brevis?

A

shorter nd deeper

44
Q

Which muscle abducts and extends the thumb?

A

abductor pollicis longus

45
Q

What muscle extends the thumb and forms the palmar border of the anatomical snuff box?

A

extensor pollicis brevis

46
Q

What muscle adducts the thumb and forms the dorsal border of the anatomical snuff box?

A

extensor pollicis longus

47
Q

Contents of the anatomical snuff box

A

extensor pollicis longus and brevis
radial artery
scaphoid

48
Q

What muscle is the principle extensor of the medial/ulnar four digits?

A

extensor digitorum

Advanced Anatomy (38 decks)

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