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Anatomy Dissection > Ch 50 Consolidated Regions and Musculature of Upper Limb > Flashcards

Ch 50 Consolidated Regions and Musculature of Upper Limb Flashcards

1
Q

Regions of the upper limb (8 items)

A

Pectoral Region
Shoulder
Axilla
Arm
Elbow
Forearm
Wrist
Hand

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2
Q

“Humerus”

A

shoulder

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3
Q

“axilla”

A

armpit

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4
Q

“brachium”

A

arm

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5
Q

“cubitis”

A

elbow

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6
Q

“antebrachium”

A

forearm

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7
Q

“carpus”

A

wrist

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8
Q

“manus”

A

hand

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9
Q

“palma”

A

palm

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10
Q

“digiti manus”

A

fingers

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11
Q

“pollex”

A

thumb

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12
Q

The upper limb is connected to the trunk by the _ _

A

shoulder girdle

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13
Q

The shoulder girdle is a C shaped ring made of 5 bones:

A

Manubrium
Right and Left Scapulae
Right and Left Clavicles

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14
Q

Pectoral region muscles:

A

Pectoralis major
Pectoralis minor
Serratus anterior

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15
Q

The 6 muscles in the shoulder group are

A

Deltoid
Supraspinatus
Infraspinatus
Teres minor
Subscapularis
Teres major

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16
Q

The 4 muscles involved with the rotator cuff are

A

Supraspinatus
Infraspinatus
Teres minor
Subscapularis

think SITS

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17
Q

The 4 muscles in the arm group are

A

Triceps brachii (long, lateral, medial head)
Biceps brachii (long and short head)
Coracobrachialis
Brachialis

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18
Q

The 4 muscles in the anterior superficial forearm group are

A

Pronator teres
Flexor carpi radialis
Palmaris longus
Flexor carpi ulnaris

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19
Q

Anterior intermediate forearm muscle: (1 item)

A

Flexor digitorum superficialis

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20
Q

The 3 muscles in the anterior deep forearm group are

A

Flexor pollicis longus
Flexor digitorum profundus
Pronator quadratus

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21
Q

The 7 muscles in the Posterior superficial forearm group are

A

Brachioradialis
Extensor carpi radialis longus
Extensor carpi radialis brevis
Extensor digitorum
Extensor digiti minimi
Extensor carpi ulnaris
Anconeus

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22
Q

The 5 muscles in the posterior deep forearm group are

A

Supinator
Abductor pollicis longus
Extensor pollicis brevis
Extensor pollicis longus
Extensor indicis

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23
Q

The 3 sub-groups of the hand muscles are

A

Thenar
Hypothenar
Small hand

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24
Q

Thenar muscles (4 items)

A

Abductor pollicis brevis
Flexor pollicis brevis
Opponens pollicis
Adductor pollicis

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25
Q

Hypothenar muscles (4 items)

A

Abductor digiti minimi
Flexor digiti minimi brevis
Opponens digiti minimi
Palmaris brevis

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26
Q

Small hand muscles (3 items)

A

Lumbricals 1-4
Dorsal interossei 1-4
Palmar interossei 1-4

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27
Q

Pectoralis major
Group
Action
Innervation

A

Pectoral Group

ADDuct, medially rotate, and flex arm at shoulder.

Medial pectoral nerve+
Lateral pectoral nerve

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28
Q

Pectoralis minor
Group
Action
Innervation

A

Pectoral

Depress scapula

Medial pectoral nerve

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29
Q

Serratus anterior
Group
Action
Innervation

A

Pectoral

Upward rotation of scapula

Long thoracic nerve

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30
Q

Deltoid
Action
Innervation

A

Flex, extend, medially and laterally rotate, and abduct arm at shoulder

Axillary nerve

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31
Q

Supraspinatus
Action
Innervation

A

Abduct arm at shoulder

Suprascapular nerve

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32
Q

Infraspinatus
Action
Innervation

A

Lateral rotation of arm at shoulder

Suprascapular nerve

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33
Q

Teres minor
Group
Action
Innervation

A

Shoulder

Lateral rotation of arm at shoulder

Axillary nerve

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34
Q

Subscapularis
Group
Action
Innervation

A

Shoulder

Medial rotation of arm at shoulder

Upper and lower subscapular nerves

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35
Q

Teres major
Group
Action
Innervation

A

Shoulder

ADDuct and medially rotate arm at shoulder

Lower subscapular nerve

36
Q

Triceps brachii (long, lateral, and medial head)
Group
Action
Innervation

A

Arm group

Extend forearm at elbow

Radial nerve

37
Q

Biceps brachii (long and short head)
Action
Innervation

A

Flex and supinate forearm at elbow

Musculocutaneous nerve

38
Q

Coracobrachialis
Group
Action
Innervation

A

Arm group

Flex arm at shoulder

Musculocutaneous nerve

39
Q

Brachialis
Action
Innervation

A

Flex forearm at elbow

Musculocutaneous nerve

40
Q

Pronator teres
Group
Action
Innervation

A

Anterior Superficial Forearm

Pronate forearm at elbow

Median nerve

41
Q

Flexor carpi radialis
Group
Action
Innervation

A

Anterior Superficial Forearm

Flex and ABDuct hand at wrist

Median nerve

42
Q

Palmaris longus
Group
Action
Innervation

A

Anterior Superior Forearm

Flex hand at wrist

Median nerve

43
Q

Flexor carpi ulnaris
Group
Action
Innervation

A

Anterior Superficial Forearm

Flex and ADDuct hand at wrist

Ulnar nerve

44
Q

Flexor digitorum superficialis
Group
Action
Innervation

A

Anterior Intermediate Forearm (all alone)

Flex digits 2-5

Median nerve

45
Q

Flexor pollicis longus
Action
Innervation

A

Flex thumb

Anterior interosseous nerve (AIN)

46
Q

Flexor digitorum profundus
Group
Action
Innervation

A

Anterior Deep Forearm

Flex digits 2-5

AIN +
Ulnar nerve

47
Q

Pronator quadratus
Group
Action
Innervation

A

Anterior Deep Forearm

Pronate hand at wrist

AIN

48
Q

Brachioradialis
Group
Action
Innervation

A

Posterior Superficial Forearm

Flex forearm at elbow

Radial nerve

49
Q

Extensor carpi radialis longus
Action
Innervation

A

Extend and abduct hand at wrist

Radial nerve

50
Q

Extensor digitorum
Group
Action
Innervation

A

Posterior Superficial Forearm

Extends digits 2-5

Posterior interosseous nerve (PIN)

51
Q

Extensor digiti minimi
Group
Action
Innervation

A

Posterior Superficial Forearm

Extend digit 5

PIN

52
Q

Extensor carpi ulnaris
Group
Action
Innervation

A

Posterior Superficial Forearm

Extend and ADDuct hand at wrist

PIN

53
Q

Anconeus
Group
Action
Innervation

A

Posterior Superficial Forearm

Extend forearm at elbow

Radial nerve

54
Q

Supinator
Group
Action
Innervation

A

Deep Posterior Forearm

Supinate forearm at elbow

PIN

55
Q

Abductor pollicis longus
Action
Innervation

A

Abduct thumb

PIN

56
Q

Extensor pollicis brevis
Group
Action
Innervation

A

Posterior Deep Forearm

Extend thumb

PIN

57
Q

Extensor pollicis longus
Group
Action
Innervation

A

Postrior Deep Forearm

Extend thumb

PIN

58
Q

Extensor indicis
Action
Innervation

A

Extend index finger

PIN

59
Q

Compartments of the arm: (3 items)

A

Anterior, medial, posterior

60
Q

Deep to skin and subcutaneous tissue is the _____ _____ which forms a tubular investment for the muscles of the arm.

Has inward extensions which course between muscles to the humerus

A

Brachial fascia

61
Q

Three inward extensions of brachial fascia

A

Lateral intermuscular septum

Medial intermusuclar septum, anterior lamina

Medial intermuscular septum, posterior lamina

62
Q

The ___ ___ is a depression on the anterior aspect of the elbow

A

Cubital fossa

63
Q

Cubital fossa boundaries

Lateral:
Medial:
Superior:

A

Brachioradialis

Pronator teres

Imaginary line between the medial and lateral epicondyles of the humerus

64
Q

The two muscles that make the floor of the cubital fossa are

A

Supinator and Brachialis

65
Q

4 contents of cubital fossa (lateral to medial)

A

Radial nerve and its terminal branches

Tendon of biceps brachii muscle

Brachial artery and its terminal branches

Median nerve

66
Q

The ____ is the portion of the upper limb distal to the forearm

A

Hand

67
Q

Areas of the hand (4)

A

Palm

Thenar - ball of the thumb

Hypothenar - ball of the little finger

Fingers

68
Q

Numbers and names of fingers

A

digit 1 = thumb (pollex)
digit 2 = index
digit 3 = middle
digit 4 = ring
digit 5 = little

69
Q

The hand has ____ carpal bones arranged in two rows

_____ row of ____
_____ row of ____

A

8
Proximal; 4
Distal; 4

70
Q

From lateral to medial, the proximal row consists of the following carpal bones (4)

A

Scaphoid
Lunate
Triquetrum
Pisiform
Straight line to pinky

71
Q

From lateral to medial, the distal row consists of the following carpal bones(4)

A

Trapezium
Trapezoid
Capitate
Hamate
Here comes the thumb (going backwards to what’s above)

72
Q

The carpal bones are arranged in the form of an ____, which is _____ anteriorly

A

arch, concave

73
Q

The ____ _____ is a triangular connective tissue membrane between the subcutaneous tissue of the palm and the tendons of the palm

A

Palmar Aponeurosis

74
Q

True or false

The apex of palmar aponeurosis is the insertion of the palmaris longus muscle and it is fused with underlying flexor retinaculum

A

True

75
Q

True or false

The base of palmar aponeurosis attaches via pretendinous bands to the fibrous digital sheaths of digits 3 to 5

A

False, digits 2 to 5

76
Q

The _____ _____ is a transverse fibrous structure anterior to the carpals

A

Flexor retinaculum

77
Q

Lateral attachment of flexor retinaculum

A

Scaphoid and trapezium

78
Q

Medial attachment of flexor retinaculum

A

Pisiform, triquetrum, hook of hamate

79
Q

Flexor retinaculum converts

A

the arch of the carapal bones into a canal, the carpal canal

80
Q

What is contained in the carpal canal?

A

9 tendons
2 bursae
1 nerve

81
Q

9 tendons in the carpal canal

A

4 tendons of flexor digitorum superficials

4 tendons of flexor digitorum profundus

1 tendon of flexor pollicis longus

82
Q

The ____ ____ surrounds the eight tendons of flexor digitorum superficials and flexor digitorum proundus

A

Ulnar bursa

83
Q

The ____ ____ surrounds the one tendon of flexor pollicis longus

A

Radial bursa

84
Q

____ ____ ____ are strong connective tissue structures that arch over the tendons flexing the digits

A

Fibrous digital sheaths

85
Q

____ ____ are loose connective tissue bursae located wherever tendons are retained by retinacula (eg. within the flexor retinaculum and fibrous digital sheaths).

A

Synovial sheaths

86
Q

The ____ ____ is a transverse fibrous structure located on the posterior surface of the distal forearm that retain the tendons extending the wrist and digits

A

Extensor retinaculum

Anatomy Dissection (39 decks)

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