human anatomy S1 > muscles > Flashcards

muscles Flashcards

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1
Q

which muscles are in the anterior thoracic wall?

A

pectoralis major and minor
serratus anterior

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2
Q

what is the role of pectoralis major?

A

flexes, adducts, extends and medially rotates arm
depresses and protracts scapula

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3
Q

what is the role of pectoralis minor?

A

stabilises scapula by drawing it inferiorly and anteriorly against the thoracic wall

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4
Q

what innervates pectoralis major and minor?

A

medial and lateral pectoral nerves

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5
Q

what is the role of serratus anterior?

A

stabilises and protracts scapula

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6
Q

what innervates serratus anterior?

A

long thoracic nerve

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7
Q

which muscles make up the posterior superficial thoracic wall?

A

latissimus dorsi
trapezius
deltoid

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8
Q

what is the role of latissimus dorsi?

A

adducts, extends and medially rotates arm

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9
Q

what innervates latissimus dorsi?

A

thoracodorsal nerve

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10
Q

what is the role of trapezius?

A

rotates, retracts, elevates and depresses scapula

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11
Q

what innervates trapezius?

A

accessory nerve

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12
Q

what is the role of deltoid?

A

flexes (anterior fibres)
extends (posterior fibres)
abducts (lateral fibres)

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13
Q

what is the innervation of deltoid?

A

axillary nerve

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14
Q

which muscles make up the posterior deep thoracic wall?

A

levator scapulae
rhomboids major and minor
teres major

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15
Q

what is the role of levator scapulae?

A

elevates scapula

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16
Q

what innervates levator scapula?

A

dorsal scapular nerve

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17
Q

what is the role of rhomboids major and minor?

A

retract, elevate and rotate scapula downwards

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18
Q

what innervates rhomboids major and minor?

A

dorsal scapular nerve

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19
Q

what is the role of teres major?

A

adducts, medially rotates and extends arm

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20
Q

what innervates teres major?

A

lower subscapular nerve

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21
Q

which muscles make up the anterior compartment of the arm?

A

biceps brachii
brachialis
coracobrachialis

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22
Q

what is the role of biceps brachii?

A

flexes arm and forearm

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23
Q

what is the role of brachialis?

A

flexes forearm

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24
Q

what is the role of coracobrachialis?

A

flexes arm at shoulder

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25
what is the innervation and blood supply of the anterior compartment of the arm?
musculocutaneous nerve and brachial artery
26
which muscle makes up the posterior compartment of the arm?
triceps brachii
27
what is the innervation and blood supply of the posterior compartment of the arm?
radial nerve deep brachial artery
28
which muscles make up the anterior superficial compartment of the forearm?
pronator teres flexor carpi radialis palmaris longus flexor carpi ulnaris
29
what is the role of pronator teres?
pronates and flexes forearm
30
what is the role of flexor carpi radialis?
flexes and abducts wrist
31
what is the role of palmaris longus?
flexes wrist
32
what is the role of flexor carpi ulnaris?
flexes and adducts wrist
33
what is the innervation and blood supply of the anterior superficial compartment of the forearm?
radial and ulnar artery median nerve
34
which muscle makes up the anterior intermediate compartment of the forearm?
flexor digitorum superficialis
35
what is the role of flexor digitorum superficialis?
flexes digits 2-5 at proximal IP joints
36
what is the innervation and blood supply of flexor digitorum superficialis?
radial and ulnar arteries median nerve
37
which muscles make up the anterior deep compartment of the forearm?
flexor pollicis longus pronator quadratus flexor digitorum profundus
38
what is the role of flexor pollicis longus?
flexes digit 1
39
what is the role of pronator quadratus?
pronates forearm
40
what is the role of flexor digitorum profundus?
flexes wrist and digits 1-5 at IP joints
41
what is the innervation and blood supply of the anterior deep compartment of the forearm?
radial and ulnar arteries and medial nerve
42
which muscles make up the mobile wad (posterior superficial compartment of the forearm)?
brachioradialis extensor carpi radialis longus and brevis
43
what is the role of brachioradialis?
flexes, supinates and pronates forearm
44
what is the role of extensor carpi radialis longus?
extends and abducts wrist and weak elbow flexor
45
what is the role of flexor carpi ulnaris brevis?
extends and adducts wrist and weak elbow flexor
46
what is the innervation and blood supply of the anterior deep compartment of the forearm?
radial and ulnar arteries median nerve
47
which muscles make up the posterior superficial compartment of the forearm?
anconeous extensor digitorum extensor carpi ulnaris extensor digiti minimi extensor expansion
48
what is the role of anconeus?
prevents elbow joint capsule being pinched in olecranon in elbow extension
49
what is the role of extensor digitorum?
extends wrist and digits 2-5
50
what is the role of extensor carpi ulnaris?
extends and adducts wrist
51
what is the role of digiti minimi?
extends wrist and digit 5
52
what is the extensor expansion?
aponeurosis of extensor muscles on phalanges
53
what is the innervation and blood supply of the posterior superficial compartment of the forearm?
deep brachial artery radial nerve
54
which muscles make up the posterior deep compartment of the forearm?
supinator extensor indices abductor pollicis longus extensor pollicis longus and brevis
55
what is the role of supinator?
supinates forearm
56
what is the role of extensor indices?
extends wrist and digit 2
57
what is the role of abductor pollicis longus?
abducts digit 1
58
what is the role of extensor pollicis longus?
extends digit 1 at MCP and IP joint
59
what is the role of extensor pollicis brevis?
extends digit 1 at MCP and IP joints
60
which muscles make up the thenar eminence?
abductor pollicis brevis flexor pollicis brevis opponens pollicis
61
what is the blood supply and innervation of the thenar eminence?
superficial palmar arch median nerve
62
which muscles make up the hypothenar eminence?
abductor digiti minimi flexor digiti minimi opponens digiti minimi
63
what is the innervation and blood supply of the hypothenar eminence?
ulnar artery and nerve
64
what are the other intrinsic muscles of the hand?
palmaris brevis adductor pollicis palmar interossei
65
what is the role of palmaris brevis?
pulls skin over hypothenar eminence to improve grip
66
what is the role of adductor pollicis?
adducts digit 1
67
what is the role of palmar interossei?
adducts digits 2, 4 and 5 towards digit 3
68
what is the blood supply and innervation of the intrinsic muscles of the hand?
deep palmar arch ulnar nerve
69
what is the role of the lumbricals?
flexes MCP and extends IP joints of digit 2-5
70
what is the blood supply and innervation of the lumbricals?
deep palmar arch ulnar and median nerves
71
what is the role of dorsal interossei?
abducts digits 2, 4 and 5 away from digit 3 assists in flexion at MCP and extension in IP joints
72
what is the blood supply and innervation of the dorsal interossei?
dorsal carpal arch ulnar nerve
human anatomy S1
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