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Anatomy Course : ) > Week 3 Lecture 5 > Flashcards

Week 3 Lecture 5 Flashcards

1
Q

What are the superficial Muscles from the posterior side?

A

Brachioradialis, extensor carpi radialis longus, extensor carpi radialis brevis, extensor digitorum, extensor carpi ulnaris

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2
Q

1

A

Head of humerus

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3
Q

What is instrinsic muscles?

A

Muscles of the hand

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4
Q

2

A

Anatomical Head

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5
Q

3

A

Greater tubercle

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6
Q

4

A

Lesser Tubercle

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7
Q

5

A

Intertubercular sulcus/groove

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8
Q

6

A

Surgical neck

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9
Q

7

A

Deltoid Tuberosity

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10
Q

8

A

Radial Groove

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11
Q

Do the reposition movement of the thumb

A

-

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12
Q

What are the deep posterior muscles?

A

Supinator, Abductor pollicis longus, Extensor pollicis longus, Extensor pollicis brevis, extensor indicis

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13
Q

Brachioradialis Action

A

Flexes the forearm

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14
Q

Brachioradialis Innervation

A

Radial Nerve

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15
Q

Extensor Carpi Radialis Longus (Superficial) Action

A

Extends and abducts (radial deviation) hand at wrist joint

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16
Q

Extensor Carpi Radialis Longus (Superficial) Innervation

A

Radial Nerve

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17
Q

Extensor Carpi Radialis Brevis (Superficial) Action

A

Extends and abducts (radial deviation) hand at the wrist joint

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18
Q

Extensor Carpi Radialis Brevis (Superficial) Innervation

A

Radial Nerve

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19
Q

Extensor Digitorum (Superficial) Origin

A

Lateral epicondyle of humerus

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20
Q

Extensor Digitorum (Superficial) Insertion

A

Extensor expansions of medial four digits

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21
Q

Extensor Digitorum (Superficial) Action

A

Extends the medial 4 fingers at the metacarpophalangeal joints and extends hand at the wrist joint

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22
Q

Extensor Digitorum (Superficial) Innervation

A

Radial Nerve

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23
Q

Extensor Carpi Ulnaris (Superficial) Origin

A

Lateral Epicondyle of humerus and posterior border of ulna

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24
Q

Extensor Carpi of Ulnaris (Superficial) Insertion

A

Base of 5th metacarpal

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25
Extensor Carpi Ulnaris (Superficial) Action
Extends and adducts (ulnar deviation) hand at the wrist joint
26
Extensor Carpi Ulnaris (Superficial) Innervation
Radial Nerve (OMG REMEMBER THIS BECAUSE THE FLEXOR CARPI ULNARIS IS FOR THE
27
What muscles make up the deep layer of the posterior part of the hand?
Supinator, Abductor pollicis longus, extensor pollicis longus, extensor pollicis brevis, extensor indicis
28
Supinator (Deep) Origin
Lateral Epicondyle of humerus, radius collateral and annular ligaments, supinator fossa and crest of ulna
29
Supinator (Deep) Insertion
Wraps around and inserts on proximal 1/3 of radius
30
Supinator (Deep) Action
Supinates the forearm
31
Supinator (Deep) Innervation
Radial Nerve
32
Extensor Indicis (Deep) Origin
Posterior Surface of Ulna and interosseous membrane
33
Extensor Indicis (Deep) Insertion
Extensor expansion of 2nd digit (the index finger)
34
Extensor Indicis (Deep) Action
Extends the index finger and helps to extend the hand
35
Extensor Indicis (Deep) Innervation
Radial Nerve
36
Abductor Pollicis Longus (Deep) Origin
Posterior surface of ulna, radius and interosseous membrane
37
Abductor Pollicis Longus (Deep) Insertion
Base of 1st Metacarpal
38
Abductor Pollicis Longus (Deep) Action
Abducts the thumb and extends it at carpo-metacarpal joint
39
Abductor Pollicis Longus (Deep) Innervation
Radial Nerve
40
Extensor Pollicis Longus (Deep) Origin
Posterior Surface of Middle 1/3 Ulna and Interosseous Membrane
41
Extensor Pollicis Longus (Deep) Insertion
Base of Distal Phalanx of Thumb
42
Extensor Pollicis Longus (Deep) Action
Extends distal Phalanx of thumb at carpometacarpal and interphalangeal joints
43
Extensor Pollicis Longus (Deep) Innervation
Radial Nerve
44
Extensor Pollicis Brevis (Deep) Origin
Posterior Surface of radius and interosseous membrane
45
Extensor Pollicis Brevis (Deep) Insertion
Base of proximal Phalanx of thumb
46
Extensor Pollicis Brevis (Deep) Action
Extends proximal phalanx of thymb at carpometacarpal joint
47
Extensor Pollicis Brevis (Deep) Innervation
Radial Nerve
48
What run underneath the anatomical snuff box?
Radial Artery, Terminal Branches of the Radial Nerve, Cutaneous br of Raidal Nerve, Scaphoid bone
49
What does Extrinsic Muscles Mean?
Have Muscle bellies located outside the hand
50
List all of the Extrinsic Muscles
Flexor Pollicis Longus, Abductor Pollicis Longus, Extensor Pollicis Longus, Extensor Pollicis Brevis
51
What are intrinsic muscles of hand (thenar muscles)?
Abductor pollicis brevis, flexor pollicis brevis, opponens pollicis, adductor pollicis
52
What does intrinstic Muscles mean?
Responsible for fine movements of hand
53
What are the groups of muscles for the hand?
1. Thenar muscles (4) 2. Hypothenar muscles (3) 3. Palmar muscles - Lumbricals (worm-like) - Interosseous - 3 Palmar (3 PAD) - 4 dorsal (4 DAB)
54
Abductor Pollicis Brevis (thenar) Origin
Flexor Reticulum and tubercles of scaphoid and trapezium
55
Abductor Pollicis Brevis (thenar) Insertion
Lateral side of base of proximal phalax of thumb
56
Abductor Pollicis Brevis (thenar) Action
Abducts thumb and helps oppose it
57
Abductor Pollicis Brevis (thenar) Innervation
Recurrent Branch of Median Nerve
58
Flexor Pollicis Brevis (thenar) Origin
Flexor retinaculum and tubercles of scaphoid and trapezium
59
Flexor Pollicis Brevis (thenar) Insertion
lateral side of base of proximal phalanx of thumb
60
Flexor Pollicis Brevis (thenar) Action
Flexes thumb
61
Flexor Pollicis Brevis (thenar) Innervation
recurrent branch of Median Nerve
62
Opponens Pollicis (thenar) Origin
Flexor retinaculum and tubercles of scaphoid and trapezium
63
Opponens Pollicis (thenar) Insertion
Lateral side of 1st Metacarpal
64
Opponens Pollicis (thenar) action
draws first metacarpal laterally to oppose thumb towards centre of palm and rotates it medially
65
Opponens Pollicis (thenar) Innervation
recurrent branch of Median Nerve
66
Adductor Pollicis (thenar)* Origin
2nd and 3rd Metacarpal
67
Adductor Pollicis (thenar)* Insertion
proximal phalanx and 1st metacarpa
68
Adductor Pollicis (thenar) Action
Adductions thumb
69
Adductor Pollicis (thenar)* Innervation
deep branch of Ulnar Nerve
70
Hypothenar muscles (act on the pinky!)
Abductor digiti minimi * Opponens digiti minimi * Flexor digiti minimi
71
Abductor Digiti Minimi (hypothenar) Origin
pisiform
72
Abductor Digiti Minimi (hypothenar) Insertion
medial side of base of proximal phalanx of little finger (5th digit)
73
Abductor Digiti Minimi (hypothenar) Action
abducts the little finger
74
Abductor Digiti Minimi (hypothenar) Innervation
deep branch of Ulnar Nerve
75
Flexor Digiti Minimi Brevis (hypothenar) Origin
hook of hamate and flexor retinaculum
76
Flexor Digiti Minimi Brevis (hypothenar) Insertion
medial side of base of proximal phalanx of little finger
77
Flexor Digiti Minimi Brevis (hypothenar) Action
flexes proximal phalanx of little finger
78
Flexor Digiti Minimi Brevis (hypothenar) Innervation
deep branch of Ulnar Nerve
79
Opponens Digiti Minimi (hypothenar) Origin
hook of hamate and flexor retinaculum
80
Opponens Digiti Minimi (hypothenar) Insertion
medial border of 5th metacarpal
81
Opponens Digiti Minimi (hypothenar) Action
draws 5th metacarpal anteriorally and rotates it, bringing the pinky into opposition with the thumb
82
Opponens Digiti Minimi (hypothenar) Innervation
deep branch of Ulnar Nerve
83
Palmar Muscles
1. Lumbricals 2. Interosseus (between bones) - 3 PAD (palmar) - 4 DAB (dorsal)
84
Palmar Interossei Function
adduct the fingers towards the middle finger (uni-pennate) PAD
85
Palmar Interossei Insertion
Proximal Phalanx
86
Dorsal Interossei Functions
abduct the fingers away from the middle finger (bi-pennate) DAB
87
Dorsal Interossei Origin
Metacarpal
88
Dorsal Interossei Insertion
Proximal Phalanx
89
Lumbricals Functions
Allow flexion at the metacarpophalangeal joints (MCP) * While maintaining extension at the interphalangeal joints (IP) * 4 lumbricals located in each hand
90
Lumbricals Origin
Proximal attachment to the tendons of flexor digitorum profundus
91
Lumbricals Insertion
Distal attachment to extensor expansions on the dorsal surface
92
Lumbricals Innervation
1-2 lumbricals = median nerve, 2-4 lumbricals = ulnar nerve
93
Radial nerve most likely to be damaged. Extensor pollicus longus
94
A B C
A = radius, B = ulna, C = base of 2nd matacarpal
95
Flexor digitorum superficialis, Flexor digitorum profundus, Flexor pollicis longus (median nerve)
96
A male rugby player suffered a fractured digit when the ball tipped off of his 4th digit. The radiograph is shown here. What muscle will be impacted by this fracture and innervation?
Flexor Digitorum Profundus, ulnar nerve, Median Nerve (C8, T1) for 2nd and 3rd digits. Ulnar Nerve (C8, T1) for 4th (this fracture) and 5th digits.
97
In this anterior view of the elbow, identify the muscle that is indicated by the arrow and innervation.
supinator . Feedback: Supinator originates on the lateral epicondyle of the humerus (and part of the ulna) and spirals around the radius. It is innervated by the radial nerve.
98
Coracobrachialis - Flexion and adduction of the arm
99
1
Brachioradialis
100
2
Pronator Teres
101
3
Flexor carpi radialis
102
4
Palmaris longus
103
5
Flexor carpi ulnaris
104
6
Flexor digitorum superficialis
105
7
Flexor digitorum profundus
106
8
Flexor pollicis longus
107
If the musculocutaneous nerve is severed at its origin from the brachial plexus, flexion at the elbow is greatly weakened but not abolished. What muscle remains operative and can contribute to flexion?
Brachialis

Anatomy Course : ) (14 decks)

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