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Anatomy > Thoracic Limb > Flashcards

Thoracic Limb Flashcards

0
Q

Teres Major

A 
O: Caudal border scapula
I: Teres major tuberosity
A: Flex shoulder jt
Innervation: axillary n.
Gp: Medial mm. shoulder
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1
Q

Superficial Digital Flexor

A

O: Medial epicondyle humerus
I: Middle phalanges, proximopalmar parts, of digits 2-5
A: flex carpal & digital jts (EXCEPT the distal interphalangeal jts)
Innervation: median & ulnar nn.
Gp: caudomedial antebrachial

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2
Q

Biceps Brachii m.

A 
O: Superglenoid tubercle
I: Proximal & medial aspects of radius & ulna
A: flex cubital jt, extend shoulder jt.
Innervation: Musculocutaneous n.
Gp: cranial m. of arm
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3
Q

Common Digital Extensor

A 
O: Lateral epicondyle
I: Extensor process of all distal phalanges
A: extend the carpal & digital jts
Innervation: Deep branch of radial n.
Gp: Craniolateral antebrachial mm
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4
Q

Trapezius m.

A 
O: Dorsal neck & thorax
I: Spine of scapula
A: Elevate the limb
Innervation: Accessory n. (CN 11)
Gp: attaches to scapula
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5
Q

Infraspinatus m.

A

O: Infraspinous fossa
I: Greater tubercle
A: flex shoulder jt., abduct limb at shoulder jt., act as lateral collateral lig.
Innervation: suprascapular n.
Gp: lateral m. of shoulder
(Bursa lies b/n its tendon & greater tubercle)

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6
Q

Lateral Digital Extensor m.

A 
O: Lateral epicondyle
I: distal phalanges of lateral digits
A: extend carpal jt & digital jts 3-5
Innervation: Deep branch of radial
Gp: craniolateral m. of forearm
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7
Q

Flexor carpi ulnaris m.

A 
O: medial epicondyle humerus, olecranon
I: Accesory carpal bone
A: Flex carpal jt.
Innervation: median & ulnar n.
Gp: caudomedial antebrachial
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8
Q

Brachialis m.

A 
O: Proximal, lateral humerus
I: proximal & medial aspects of radius & ulna
A: flex elbow jt.
Innervation: Musculocutaneus n.
Gp: cranial m. of bracium
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9
Q

Brachiocephalicus m.

A

O: Clavicle/Clavicular intersection
I: Brachial-cranial distal humerus, Cervical-dorsal neck, Mastoid-mastoid process
A: pull limb cranially, extend shoulder jt, draw head/neck laterally or ventrally
Innervation: cervical & thoracic spinal nn, accessory n.,
Gp: Extrinsic mm. of thoracic limb

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10
Q

Rhomboideus m.

A

O: occipital bone, dorsal neck & thorax
I: dorsal border scapula &/or scapular cartilage
A: elevate limb, pull scapula to trunk
Innervation: cervical & thoracic spinal nn, peripheral nn, accessory n
Gp: extrinsic mm. thoracic limb

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11
Q

Omotransversarius m.

A

O: wing of atlas
I: distal spine of scapula
A: advance thoracic limb, lateral and deep flexion of neck
Innervation: cervical & thoracic nn, peripheral nn, accessory n
Gp: extrinsic mm of thoracic limb

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12
Q

Superficial pectoral m

A

O: cranial sternum
I: crest of greater tubercle of humerus & cranial border humerus
A: adduct limb
Innervation: cervical & thoracic nn, peripheral nn, accessory n.
Gp: extrinsic mm of thoracic limb

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13
Q

deep pectoral m.

A

O: sternum
I: greater and lesser tubercles of humerus
A: adduct limb & pull it caudally
Innervation: cervical and thoracic nn, peripheral nn, accessory n
Gp: extrinsic mm of thoracic limb

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14
Q

latissimus dorsi m.

A

O: thoracolumbar fascia
I: teres major tuberosity
A: draw limb caudally or trunk cranially, flex or extend shoulder jt.
Innervation: cervical & throacic nn, peripheral nn, accessory n
Gp: extrinsic mm of thoracic limb

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15
Q

serratus ventralis m

A

O: cervical vertebrae, thoracic wall (ribs)
I: serrated face scapula
A: support and elevate trunk
Innervation: cervical & thoracic nn, peripheral nn, accessory n.
Gp: extrinsic mm of thoracic limb

16
Q

supraspinatus m

A 
O: supraspinous fossa
I: greater tubercle humerus
A: lateral stability shoulder jt (lateral collateral lig), extend shoulder jt
Innervation: suprascapular n
Gp: lateral shoulder mm
17
Q

Deltoideus m

A 
O: spine and acromion of scapula
I: deltoid tuberosity
A: flex shoulder jt
Innervation: axillary n
Gp: lateral shoulder mm.
18
Q

subscapularis m

A 
O: subscapular fossa
I: lesser tubercle humerus
A: medially stabilize shoulder jt, adduct at shoulder
Innervation: subscapular n
Gp: medial shoulder mm
19
Q

tensor fasciae antebrachii m.

A 
O: latissimus dorsi m. & fascia on caudal border scapula
I: tuber olecrani
A: extend elbow jt
Innervation: radial n
Gp: caudal brachium mm
20
Q

triceps brachii m

A

O: long = caudal border scapula, all others = proximal humerus
I: tuber olecrani
A: all extend elbow jt, long-flex shoulder jt
Innervation: radial n
Gp: caudal brachium mm

21
Q

extensor carpi radialis m

A 
O: lateral supracondylar crest humerus
I: dorsoproximal end metacarpals 2-3
A: extend carpal jts, flex cubital jts minimally
Innervation: deep branch radial n
Gp: craniolateral antebrachial mm
22
Q

ulnaris lateralis m

A 
O: lateral epicondyle humerus
I: proximolateral metacarpal 5, accessory carpal bn
A: abduct manus, flex carpal jts
Innervation: deep branch radial n
Gp: craniolateral antebrachial mm
23
Q

abductor pollicus longus m

extensor carpi obliquus m

A 
O: body of ulna
I: proximal metacarpal 1
A: extend carpal jts, abduct digit 1
Innervation: deep branch radial n
Gp: craniolateral antebrachial mm
24
Q

supinator m

A 
O: lateral epicondyle humerus
I: body of radius
A: supinate manus
Innervation: deep branch radial n
Gp: craniolateral antebrachial mm
25
Q

flexor carpi radialis m.

A 
O: medial epicondyle humerus
I: palmaroproximal aspect of metacarpal bns 2-3
A: flex carpal jts
Innervation: median & ulnar nn
Gp: caudomedial antebrachial mm
26
Q

Deep digital flexor m.

A 
O: medial epicondyle humerus, radius & ulna
I: distal phalanges, palmar aspect
A: flex carpal jts and digital jts
Innervation: median & ulnar nn
Gp: caudomedial antebrachial
27
Q

Pronator teres m

A 
O: medial epicondyle humerus
I: body of radius
A: pronate manus
Innervation: median & ulnar nn
Gp: caudomedial antebrachial
28
Q

Interosseus mm

A

O: palmar, bae metacarpals 2-5
I: axial & abaxial base proxmial phalanges 2-5 (via sesmoidean lig)
A: support metacarpophalangeal jts, flex metacarpophalangeal jts 2-5
Innervation: deep branch of median and ulnar nn
Gp: palmar manus

29
Q

Teres minor m.

A 
O: Caudal border scapula
I: Teres minor tuberosity
A: Flex shoulder jt. 
Innervation: suprascapular & axillary nn.
Gp: Lateral mm. of Shoulder
30
Q

Coracobrachialis m.

A 
O: Coracoid process of scapula
I: Crest of lesser tubercle of humerus
A: Adduct limb at shoulder jt, act as medial collateral lig.
Innervation: 
Gp: Medial mm. of shoulder
31
Q

Anconeus m.

A 
O: caudal aspect of distal humerus
I: tuber olecrani
A: extend elbow jt.
Innervation: radial n.
Gp: caudal mm of arm
32
Q

Brachioradialis m.

A 
O: lateral epicondyle humerus
I: fascia near carpus
A: flex cubital jts. & supinate manus
Innervation:
Gp: craniolateral antebrachial
33
Q

pronator quadratus m

A

Attachments: apposed surface of radius & ulna
Action: pronation of manus
Innervation:
Gp: caudomedial antebrachial

Anatomy (13 decks)

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