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Anatomy- Muscles > 2nd Midterm Fall 2017 Semester > Flashcards

2nd Midterm Fall 2017 Semester Flashcards

(53 cards)

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1
Q

Brachioradialis

A

O: lateral supracondylar ridge

I: Styloid process of the radius

N: Radial Nerve

A: flexion when forearm in midposition

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2
Q

Aconeus Muscle

A

O: laretal epicondyle of humerus

I: lateral surface of ulna

N: radial

A: extension & pronation

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3
Q

Radial-ulnar joint

A

Supination and pronation
Radius rotates around ulna distally
Radius rotates into radial notch proximal

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4
Q

Elbow Joints

A 
Radial collateral
Ulnar collateral
-anterior bundle
-posterior bundle
-transverse bundle
Angular ligament of the radius
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5
Q

Arches of Hand

A

Proximal
Distal
Longitudinal
Arch btwn thumb and index finger

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6
Q

Bones of Thumb (Distal to Proximal)

A 
2nd phalanx 
1st phalanx
1st metacarpal
Trapezium 
Scaphoid
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7
Q

Joints of Thumb (4)

A

Scapho-trapezium
Trapezo-metacarpal

Metacarpal-phalanx
Interphalanx

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8
Q

Intrinsic Hand Muscles

-Muscles of opposition

A

Opponens

  • digiti minimi (pinky)
  • pollicis (Thumb)

Flexor:

  • digiti minimi brevis (pinky)
  • pollicis brevis (Thumb)

Abductor:

  • digiti minimi brevis (pinky)
  • pollicis brevis (Thumb)

Adductor:
-pollicis

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9
Q

Types of Hand Function

A 
Prehension 
-static grips or dynamic grips
Percussion
Gesture
Weight Support
Exploration & touch communication
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10
Q

Palm Muscles

A 
Lumbricals
Dorsal & Palmar Interossei
-DAB: Dorsal AB-Duct
-PAD: Palmar AD-duct
Adductor Pollicis
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11
Q

Thenar Muscles (Thumb)

A

Flexor Pollicis Brevis
ABductor Pollicis Brevis
Opponens Pollicis

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12
Q

Hypothenar (pinky)

A

Palmaris Brevis
Flexor Digiti Minimi
AB-ductor Digiti Minimi
Opponens Digiti Minimi

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13
Q

Blood & Nerve Supply of Hand

A

Arteries:
Radial Artery (take pulse)
Ulnar Artery

Nerves:
Ulnar
-medial 1 1/2 digits
-palmar and dorsal innervation

Median

  • only nerve through carpal tunnel
  • palmar and dorsal side of 3 1/2 fingers
  • dorsal innervation, over finger tips stop at DIP Joint

Radial

  • dorsal lateral aspect of hand
  • dorsal 3 1/2 fingers from DIP JOINT and continues proximally
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14
Q

Anterior Forearm Muscles (Flexors)

***4-1=3
4-superficial (PFPF)
1-intermediate
3-deep

A
  • Pronator Teres
  • Flexor Carpi Radialus
  • Palmaris Longus
  • Flexor Carpi Ulnaris

-Flexor Digitorium Superficialis

  • Flexor Digitorium Profundus
  • Flexor Pollicis Longus
  • Pronator Quadratus
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15
Q

Pronator Teres

A

O:

  • Humeral head: proximal to medial epicondyle, common flexor tendon
  • Ulnar head:coronoid process

I: radius, midway along lateral shaft

N: median nerve

A: pronates FA, SECONDARY elbow flexor

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16
Q

Flexor Carpii Radialis

A

O: medial epicondyle of humerus by CTF, adjacent internuscular septum & antebrachial septum
I: palmar aspect of 2nd MC base and slip of 3rd MC base
N: Median
A: flex wrist, ABduct Radial deviation

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17
Q

Palmaris Longus

A

O: medial epicondyle by CFT, adj inter muscular septum, antebrachial fascia
I: Flexor retinaculum at wrist & palmar aponeurosis
N: Median Nerve
A: flexes wrist, tenses palmar aponeurosis

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18
Q

Flexor Carpii Ulnaris

A

O:
Humeral head- medial epicondyle by CFT
Ulnar head-medial margin of olecranon, proximal 2/3 of post border of ulna
I: pisiform & hamate bone and 5th MC by pisohamate & pisometacarpal ligament
N: ulnar Nerve
A: flex wrist, ulnar deviation

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19
Q

Flexor Digitorium Superficialis

A

O
-Humeroulnar Head: med epicondyle, UCL, intermuscular Septa & Med aspect of coronoid process

-radial head: anterior radial border
I: middle phalanges of 4 lesser fingers via 4 tendons
N: Median
A: Flexes PIP, MCP of the lesser 4 digits and wrist

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20
Q

Flexor Digitorium Profundus

A

O: Ant, Med & posterior surfaces of proximal 3/4 ulna, and med aspect of coronoid process and interosseous membrane

I: Palmar Aspect Base of distal phalanges

N:

  • Lateral 1/2: Ant Interosseous
  • Medial 1/2: Ulnar

A: flexes DIP of lesser 4 digits, secondarily PIPs, MCPs and wrist

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21
Q

Flexor Pollicis Longus

A

O: Ant surface of radius b/t the tuberosity & pronator quadratus muscle, adjacent Interosseous membrane

I: distal phalanx of Thumb, volar surface

N: Anterior Interosseous

A: Flexes IP joint of Thumb

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22
Q

Flexor Quadratus

Study These Flashcards
A

O: Anterior surface of ulna along oblique ridge

I: Anterior border and surfaces of radius along distal 1/4

N: Anterior Interosseous

A: pronates forearm, opposes separation of ulna and radius

23
Q

Dorsal Forearm Muscles (Extensors)

Laws of 3: wrist, thumb, fingers and (Aconeus, brachioradialis & supinator)

Study These Flashcards
A 
Superficial:
Brachioradialis
Extensor Carpii Radialis Longus
Extensor Carpii Radialis Brevis
Extensor Digitorium 
Extensor Digiti Minimi
Extensor Ulnaris

Deep:
Anconeus 
Supinator
ABdor pollicis Longus
Extensor Pollicis Brevis
Extensor Pollicis Longus
Extensor indices
24
Q

Brachioradialis

Study These Flashcards
A

O: sup 2/3 of lateral supracondylar ridge of humerus & lateral intermuscular septum

I:distal aspect of lateral surface of radius, proximal styloid process

N: radial

A:Flexes elbow

25
Extensor Carpi Radialis Longus
O:inf 1/3 lateral supracondylar ridge, intermuscular septum, lateral epicondyle I: base of 2nd MC on dorsal lat aspect N: radial A: Ext wrist, ABduct hand (radial deviation)
26
Extensor Carpi Radialis Brevis
O: lateral epicondyle of humerus by CET, radial collateral ligament, adjacent and intermuscular septum I: base of 3rd MC on dorsal lateral aspect N: radial Nerve A: Ext wrist, ABduct hand
27
extensor Digitorium
O: lateral epicondyle by CET, intermuscular septum, antebrachial fascia I: dorsal digital expansion of lesser 4 digits N: deep branch of the radial A: ext wrist & IP’s and MCPs of lesser 4 digits
28
Extensor Digiti Minimi
O: lateral epicondyle by CET & adjacent antebrachial fascia I: dorsal digital expansion of 5th digit N: Deep Branch of Radial Nerve A: Ext wrist & 5th Digit
29
Extensor Carpi Ulnaris
O: lateral epicondyle by CET, post border of ulna, overlying antebrachial fascia I: base of 5th MC @ medially located tubercle N: Deep Branch of Radial Nerve A: Ext wrist, ADducts hand (Radial deviation)
30
Aconeous
O:lateral epicondyle I: lat aspect of olecranon process N: radial A: assist w/ elbow extension
31
Supinator 4 syllables = 4 origins 2 insertions
O: lat epicondyle, Radial collateral lit, annular lig, supinator crest of ulna I: proximal 1/3 of radius along post & lateral surface N: Deep branch of Radial Nerve A: supinator FA
32
ABdor Pollicis Longus | 3 words = 3 origin sites
O: ulna, Interosseous membrane & post surface of radius I: base of 1st MC N: radial A: Abds Thumb at 1st CMC joint
33
Extensor Pollicis Brevis
O: post surface of radius, adjoining Interosseous membrane I: base of proximal phalanx of 1st digit N: radial A: ext 1st MCP & CMC joint
34
Extensor Pollicis Longus
O: Middle 1/3 of post surface of ulna & interroseous membrane I: distal phalanx of Thumb on dorsal surface N: radial A: ext IP
35
Extensor Digiti indices
O: post distal surface of ulna I: base of distal phalanx of index N: radial A: ext 2nd digit & wrist
36
ABductor Pollicis Brevis
O: Flexor retinaculum, scaphoid & trapezium I: base of proximal phalanx of Thumb & extensor hood N: Median A: ABD thumb
37
Flexor Pollicis Brevis
O: Superficial: Flexor retinaculum & tubercle of trapezium Deep: trapezoid, capitate & palmar carpal lig I: proximal phalanx of Thumb N: Median Nerve A: flex 1st MCP & CMC
38
Opponens Pollicis
O: Flexor retinaculum & trapezium I: lat border & palmar surface of 1st MC N: Median A: rotates Thumb into opposition
39
ADDuctor Pollicis
O: Oblique Head: capitate bone, bases of 3rd MC Tranvs Head: volar aspect of 3rd MC I: base of proximal phalanx of Thumb, volar side N: ulnar A: ADDs Thumb
40
Opponens Digiti Minimi
O: hook of hamate, flexor retinaculum I: 5th MC along entire ulnar side N: ulnar A: opposes 5th digit
41
Flexor Digiti Mini
O: hook of hamate, Flexor retinaculum I: proximal phalanx of 5th digit N: ulnar A: Flexes 5th digit
42
ABDuctor Digiti Minimi
O: pisiform bone, FCU I: base of proximal phalanx at 5th digit N: Ulnar A: ABDs 5th digit at MCP
43
Palmaris Brevis
O: lat attach-Flexor ret, medial aspect of Palmar aponeurosis I: dermis of hand medial border N: ulnar A: wrinkles skin medial side palm, deepens concavity of palm
44
Lumbricals
O: blends w/ FDP tendons I: extensor hoods digits 2-5 N: ulnar A: Flexes MCPs & ext IPs of lesser 4 digits
45
Palmar Interossei
O: sides of MCs I: extensor hoods of digits 1-5, prod phalanx of Thumb N: ulnar A:ADDs digits toward 3rd digit
46
Dorsal Interossei
O: adjacent sides of MCs I: extensor hoods & proximal phalanx of digits 2-4 N: ulnar A: ABDs digits 2-4
47
Coracobrachialis
O: coracoid process I: humerus midway along med border N: musculocutaneous A: flex & horizontal add of humerus
48
Biceps Brachii
``` short head O: Corachoid process I: flat tendon radial tuberosity A: flex elbow/humerus & supinator of forearm N: Musculocutaneous ``` long head O: Glenoid labrum & supraglenoid tubercle I: flat tendon radial tuberosity A: flex elbow/humerus & supinator of forearm N: Musculocutaneous
49
Brachialis
O:ant surface of humerus along distal 1/2, I: coronoid process & ulna tuberosity A: flex of elbow N: musculocutaneous
50
Triceps Brachii
Long Head (O: scapula @ infraglenoid tubercle) Lateral Head (O: narrow obliq area post surface humerus, sup spiral line & lat intermuscular septum) Medial Head (O: large area post surface humerus, inf spiral line & med intermuscular septum) I (all): common tendon to olecranon processof ulna (CTOPU) N: radial A (all): ext elbow; long Head-add humerus
51
Rectus Abdominus
Action: flexion of lumbar spine w/ fixed pelvis, Posterior pelvic tilt w/fixed rib cage, expiration, intra-dominal pressure Fibers run vertically
52
Transverse Abdominus
Stabilize lumbar spine and pelvis before movement of upper/lower limbs occur Fibers run horizontally Wraps around to the back of body
53
External Obliques
Action:contraction there's ipsilateral flexion of spine and contralateral trunk rotation

Anatomy- Muscles (2 decks)

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