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Anatomy > Muscles > Flashcards

Muscles Flashcards

1
Q

Trapezius

A

ORI: upper neck to mid back
INS: clavicle, scapular spine
ACT: varied because so large

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2
Q

Rhomboids

A

Minor (superior), Major (inferior)
ORI: mid spine (upper back)
INS: medial border of scapula
ACT: adduction of scapula

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3
Q

Levetor Scapulae

A

ORI: top 4 vertebrae
INS: medial border of scapula
ACT: elevates scapula (shrugging)

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4
Q

Serratus Anterior

A

ORI: Ribs 1-8
INS: Medial border of scapula
ACT: Protraction, abduction of scapula

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5
Q

Subclavius

A

ORI: Rib 1
INS: Clavicle (inferior side)
ACT: Depression of shoulder and protraction

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6
Q

Pectoralis Minor

A

ORI: ribs 3-5
INS: coracoid process
ACT: depression/protraction of shoulder and medial rotation of the scapula

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7
Q

Deltoid

A 
ORI: Clavicle, scapular spine and acromion 
INS: deltoid tuberosity (humerus)
ACT: abduction of the shoulder
anterior - flexion, medial rotation
posterior - extensions, lateral rotation
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8
Q

Supraspinatus

A 
Supra - Super - hero - helps the deltoid (lol) 
Posterior, superficial
ORI: Supraspinous fossa
INS: Greater tubercle (humerus)
ACT: abduction of the shoulder
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9
Q

Subscapularis

A

Anterior
ORI: Subscapular fossa
INS: lesser tubercle (humerus)
ACT: medial rotation of shoulder adduction

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10
Q

Teres Major

A

ORI: Inferior angle (scapula)
INS: Intertubercular sulcus (humerus)
ACT: Extension, medial rotation of shoulder

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11
Q

Infraspinatus

A

Posterior
ORI: Infraspinous fossa
INS: Greater tubercle (humerus)
ACT: lateral rotation of the shoulder

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12
Q

Teres Minor

A

ORI: lateral border scapula
INS: Greater tubercle (humerus)
ACT: lateral rotation (adduction)

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13
Q

Coracobrachialis

A

ORI: Coracoid process
INS: Medial shaft (humerus)
ACT: adduction, flexion at shoulder

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14
Q

Pectoralis Major

A

ORI: ribs 2-6, sternum, medial clavicle
INS: greater tubercle (humerus) and intertubercular sulcus
ACT: flexion and medial rotation, adduction

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15
Q

Latissimus Dorsi

A

Posterior
ORI: Inferior thorax and sacral vertebrae, ribs 8-12
INS: Intertubercular sulcus (humerus)
ACT: Extension, adduction, medial rotation

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16
Q

Triceps Lateral Head

A

ORI: superior, lateral humerus
INS: olecranon (ulna)
ACT: extensions of the elbow

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17
Q

Triceps Long Head

A

ORI: Infraglenoid tubercle
INS: olecranon (ulna)
ACT: extension at the elbow AND extension/adduction at the shoulder

18
Q

Triceps Medial Head

A

ORI: posterior humerus
INS: olecranon
ACT: extension at the elbow

19
Q

Anconeus

A

ORI: posterior of the lateral epicondyle
INS: olecranon
ACT: extension of the elbow

20
Q

Biceps Brachii

A

Short Head ORI: coracoid process
Long Head ORI: supraglenoid tubercle
INS: radial tuberosity
ACT: flexion and suppination (soup-up)

21
Q

Brachialis

A

ORI: distal anterior humerus
INS: ulnar tuberosity and coronoid process (ulna)
ACT: flexion

22
Q

Brachioradialis

A

ORI: Ridge above lateral epicondoyle (humerus)
INS: Styloid process of the radius
ACT: flexion at the elbow

23
Q

Superficial muscles that move the hand/fingers from superior to distal (PFPF) anterior

A

Pronator Teres
Flexor Carpi Radialis
Palmaris Longus
Flexor Carpi Ulnaris

24
Q

Pronator Teres

A

ORI: medial epicondyle (humerus) and coronoid process (ulna)
INS: middle of lateral surface of radius
ACT: flexion at elbow, pronation or forearm/hand

25
Q

Flexor Carpi Radialis

A

ORI: medial epicondyle (humerus)
INS: metacarpals 2 and 3
ACT: flexion, abduction of wrist

26
Q

Palmaris Longus

A

ORI: medial epicondyle (humerus)
INS: palmar aponeurosis and flexor retinaculum
ACT: flexion at the wrist

27
Q

Flexor Carpi Ulnaris

A

ORI: medial epicondyle (humerus), olecranon
INS: pisimform, hamate, 5th metacarpal
ACT: flexion/adduction at wrist

28
Q

Flexor Digitorum Profundus

A

ORI: interosseous membrane, coronoid process, medial and posterior ulna
INS: to bases of distal phalanges digits 2 to 5
ACT: flexion at distal interphalangeal joints

29
Q

Flexor Digitorum Superficialis

A

ORI: medial epicondyle of humerus, coronoid process (ulna)
INS: bases of middle phalanges 2 to 5
ACT: flexion at proximal interphalangeal joints and wrist joints

30
Q

Flexor Pollicis Longus

A

ORI: anterior shaft of radius, intersseous membrane
INS: base of distal phalanx of thumb
ACT: flexion at thumb joints

31
Q

Extensor carpi radialis longus

A

ORI: lateral supercondylar ridge of humerus
INS: base of metacarpal 2
ACT: Extension/adbduction at wrist

32
Q

Extensor carpi radialis brevis

A

ORI: lateral epicondyle of humerus
INS: base of metacarpal 3
ACT: extension/abduction at wrist

33
Q

Extensor carpi ulnaris

A

ORI: lateral epicondyle of humerus and adjacent dorsal surface of ulna
INS: base of metacarpal 5
ACT: extension/adduction at wrist

34
Q

Superficial muscles that move the hand/fingers posterior

A

Extensor carpi radialis longus
Extensor carpi radialis brevis
Extensor carpi ulnaris

35
Q

Middle posterior muscles that move the hand/ fingers

A

Extensor digitorum

Extensor digiti minimi

36
Q

Extensor digitorum

A

ORI: lateral epicondyle (humerus)
INS: posterior phalanges, digits 2-5
ACT: extension at finger joints and wrist

37
Q

Extensor digiti minimi

A

ORI: from extensor tendon to lateral epicondyle, intermuscular septa
INS: proximal phalynx of little finger
ACT: extension at joints of little finger and wrist

38
Q

Deep posterior muscles that move hand/fingers

A

Abductor pollicis longus
Extensor pollicis longus
Extensor indicus
Extensor pollicis brevis

39
Q

Abductor pollicis longus

A

ORI: dorsal surface of radius and ulna
INS: lateral margin of metacarpal bone 1 and trapezium
ACT: Abduction at thumb and wrist

40
Q

Extensor pollicis longus

A

ORI: ulna and interserrous membrane
INS: distal phalynx of thumb
ACT: Extension at thumb and abduction of wrist

41
Q

Extensor Indicus

A

ORI: ulna and interosseous membrane
INS: proximal phalynx of digit 2 with tendon of extensor digitorum
ACT: Extension, adduction at joint of index finger (2)

42
Q

Extensor pollicis brevis

A

ORI: interossesous membrane and radius
INS: proximal phalynx of thumb
ACT: extension at the thumb, abduction at wrist

Anatomy (3 decks)

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