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Musculoskeletal Anatomy 1 > Muscles > Flashcards

Muscles Flashcards

1
Q

Muscles of the head (3)

A

Scalp, facial expression, mastication

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2
Q

Muscles of the scalp

A

move the scalp, ears, and eyebrows

Occipitalis, frontalis

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3
Q

Muscles of facial expression

A

muscles of the eyes, nose, and mouth, to move the fascia/skin of the face
occipitalis, frontalis,

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4
Q

Muscles of mastication

A

move the mandible

temporalis, masseter

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5
Q

Temporalis

A

Ori: temporal fossa
Ins: coronoid process and anterior border of the ramus of the mandible
Fun: mastication

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6
Q

Masseter

A

Ori: zygomatic arch
Ins: angle and ramus of mandible
Fun: mastication

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7
Q

Occipitofrontalis (occipitalis)

A

Ori: superior nuchal line of occipital bone, mastoid process of temporal bone
Ins: galea aponeurotica
Fun: raise eyebrows

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8
Q

Occipitofrontalis (frontalis)

A

Ori: galea aponeurotica
Ins: Fascia and skin superior to the eye and the nose
Fun: raise eyebrows

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9
Q

Zygomaticus major

A

Ori: zygomatic bone
Ins: angle of the mouth
Fun: natural smile

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10
Q

Risorius

A

Ori: facia over the parotid gland
Ins: angle of the mouth
Fun: retracts mouth laterally for fake smile

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11
Q

Buccinator

A

Ori: the outer surfaces of the alveolar processes of the maxilla and mandible
Ins: deep into the musculature of the lips, lateral to the angle of the mouth
Fun: compresses cheek against teeth

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12
Q

Platysma

A

Ori: the fascia covering the upper parts of the pectoralis major and deltoid
Ins: mandible and subcutaneous fascia of the lower face
Fun: depression of the mandible (or lower lip), draws up the skin of the superior chest + neck, creating ridges of skin of the neck

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13
Q

Sternocleidomastoid (SCM)

A

Ori: medial1/3 of clavicle, manubrium of sternum
Ins: mastoid process of temporal bone, lateral 1/2 of the superior nuchal line of occipital bone
Fun: extension of head @ AOJ, extension of upper neck @ spinal joint, lateral flexion of head/neck, rotation of head, elevation of sternum/clavicle during forced breathing

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14
Q

Upper trapezius

A

Ori: External occipital protuberance and medial superior nuchal line from the ligamentum nuchae, C7
Ins: Lateral clavicle, acromion of scapula
Nerve: Spinal accessory nerve (CN XI)

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15
Q

Middle trapezius

A

Ori: T1-T5
Ins: Acromion and spine of scapula
Nerve: Spinal accessory nerve (CN XI)

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16
Q

Lower trapezius

A

Ori: T6-T12
Ins: Tubercle at the root of the spine of scapula
Nerve: Spinal accessory nerve (CN XI)

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17
Q

Rhomboids minor

A

Ori: C7 & T1
Ins: Medial border of scapula at root of spine
Nerve: Dorsal scapular nerve

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18
Q

Rhomboids major

A

Ori: T2-T5
Ins: Medial border of scapula inferior to spine
Nerve: Dorsal scapular nerve

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19
Q

Levator Scapulae

A

Ori: Transverse processes C1-C4
Ins: Medial border of scapulae (above the spine of scapula)
Nerve: Dorsal scapular nerve

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20
Q

Pectoralis minor

A

Ori: Anterior ribs 3-5
Ins: Coracoid process
Nerve: Medial pectoral nerves

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21
Q

Subclavius

A

Ori: First rib
Ins: Subclavian groove of clavicle (middle 1/3)
Nerve: subclavian nerve

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22
Q

Serratus anterior

A

Ori: upper nine ribs
Ins: anterior surface of vertebral (medial) border of scapula
Nerve: long thoracic nerve

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23
Q

Pectoralis major

A

Ori: medial half of clavicle, sternum (costal cartilages R1-7)
Ins: Lateral lip of bicipital groove (intertubercular sulcus) of humerus
Nerve: Medial & lateral pectoral nerves

24
Q

Latissimus dorsi

A

Ori: T7-L5, crests of ilium & sacrum, lowest 4 ribs
Ins: Floor of bicipital groove of humerus
Nerve: Thoracodorsal nerve

25
Q

Deltoid

A

Ori: Lateral clavicle, acromion, spine of scapula
Ins: Deltoid tuberosity of humerus
Nerve: Axillary nerve

26
Q

Subscapularis

A

Ori: Subscapular fossa
Ins: Lesser tubercle of humerus
Nerve: Upper and lower subscapular nerves

27
Q

Supraspinatus

A

Ori: Supraspinous fossa
Ins: Superior facet of greater tubercle of humerus
Nerve: Suprascapular nerve

28
Q

Infraspinatus

A

Ori: Infraspinous fossa
Ins: middle facet of greater tubercle of humerus
Nerve: Suprascapular nerve

29
Q

Teres minor

A

Ori: Superior lateral border of scapula
Ins: Inferior facet of greater tubercle of humerus
Nerve: Axillary nerve

30
Q

Teres Major

A

Ori: inferior lateral border of scapula
Ins: Medial lip of bicipital groove of humerus
Nerve: Lower subscapular

31
Q

SITS muscles

A

supraspinatus, infraspinatus, teres minor, subscapularis

32
Q

Biceps brachii

A

Ori: Short head- Coracoid process of scapula
Long head- supraglenoid tubercle of scapula
Ins: Radial tuberosity and bicipital aponeurosis
Nerve: Musculocutaneous nerve

33
Q

Coracobrachialis

A

Ori: coracoid process of scapula
Ins: middle portion of the medial surface of humerus
Nerve: Musculocutaneous nerve

34
Q

Brachialis

A

Ori: distal half of the anterior surface of humerus
Ins: Ulnar tuberosity, coronoid process of ulna
Nerve: Musculocutaneous nerve

35
Q

Triceps brachii

A

Ori: Long head- infraglenoid tubercle
Lateral head- lateral, posterior humerus (superior to radial groove)
Medial head: Rest of posterior surface of humerus (inferior to radial groove)
Ins: Olecranon process of ulna
Nerve: Radial nerve

36
Q

Pronator teres

A

Ori: Humeral head- medial epicondyle of humerus (via common flexor tendon)
Ulnar head- coronoid process of ulna
Ins: middle of the lateral aspect of radius
Nerve: median nerve

37
Q

Flexor carpi radialis (FCR)

A

Ori: Medial epicondyle of humerus (via common flexor tendon)
Ins: base of 2nd and 2rd metacarpals
Nerve: Median nerve

38
Q

Palmaris longus (PL)

A

Ori: medial epicondyle of humerus via common flexor tendon
Ins: palmar aponeurosis and flexor retinaculum
Nerve: Median nerve

39
Q

Flexor carpi ulnaris (FCU)

A 
Ori: 1. medial epicondyle of humerus via common flexor tendon
2. medial side of olecranon
3. superior posterior border of ulna
Ins: 1. base of 5th metacarpal
2. hook of hamate
3. pisiform
Nerve: Ulnar nerve
40
Q

Brachioradialis (BR)

A

Ori: proximal 2/3 of lateral supracondylar ridge of humerus
Ins: Superior to styloid process of radius
Nerve: Radial nerve
FLEXOR MUSCLE** “beer drinking muscle”

41
Q

Extensor carpi radialis longus (ECRL)

A

Ori: Distal 1/3 of lateral supracondylar ridge of humerus
Ins: Base of 2nd metacarpal bone
Nerve: Radial nerve
“Long conversation”

42
Q

Extensor carpi radialis brevis (ECRB)

A

Ori: lateral epicondyle of humerus via common extensor tendon
Ins: base of 3rd metacarpal bone
Nerve: Radial nerve
“Short conversation”

43
Q

Extensor digitorum (ED)

A

Ori: lateral epicondyle of humerus via common extensor tendon
Ins: distal and middle phalanges of fingers 2-5 via dorsal digital expansion
Nerve: Radial nerve

44
Q

Extensor digiti minimi (Edm)

A

Ori: Lateral epicondyle of humerus via common extensor tendon
Ins: Middle and distal phalanges of little finger via its dorsal digital expansion
Nerve: Radial nerve

45
Q

Extensor carpi ulnaris (ECU)

A

Ori: Lateral epicondyle of humerus via common extensor tendon, middle posterior border of ulna
Ins: Base of 5th metacarpal bone
Nerve: Radial nerve

46
Q

Anconeus

A

Ori: Lateral epicondyle of humerus
Ins: Lateral side of the olecranon process of ulna, proximal 1/4 posterior surface of shaft of ulna
Nerve: Radial nerve

47
Q

Supinator

A

Ori: Supinator crest of ulna, lateral epicondyle of humerus
Ins: Proximal of lateral surface of radius
Nerve: Radial nerve

48
Q

Abductor pollicis brevis (APB)

A

Ori: Flexor retinaculum, scaphoid and trapezium
Ins: Proximal phalanx of thumb
Nerve: Median nerve

49
Q

Flexor pollicis brevis (FPB)

A

Ori: Flexor retinaculum, trapezium
Ins: Proximal phalanx of thumb
Nerve: Median nerve

50
Q

Abductor digiti minimi (ADM)

A

Ori: Pisiform, tendon of FCU tendon
Ins: Proximal phalanx of the 5th finger
Nerve: Ulnar nerve

51
Q

Flexor digiti minimi brevis (FDMB)

A

Ori: flexor retiaculum and hook of hamate
Ins: Proximal phalanx of the 5th finger
Nerve: Ulnar nerve

52
Q

Adductor pollicis (AP)

A

Or: Capitate and 2nd and 3rd metacarpals
Ins: Base of proximal phalanx of thumb (tendon of muscle contains a sesamoid bone)
Nerve: ulnar nerve

53
Q

Lumbrical group: (4) “TATA”

A

Ori: Tendon of flexor digitorum profundus (FDP) of each finger
Ins: Dorsal digital expansion of four medial fingers
Nerve: 1&2 Median, 3&4 Ulnar nerve

54
Q

Dorsal interossei muscles (4)

A

Ori: Adjacent sides of metacarpals
Ins: Base of proximal phalanges and dorsal digital expansion of fingers 2,3,4
Nerve: Ulnar nerve
Does DAB and TATA

55
Q

Palmar interossei muscles (3)

A

Ori: Anterior side of metacarpal of fingers 2,4,5
Ins: Base of proximal phalanges and dorsal digital expansion of fingers 2,4,5
Nerve: Ulnar nerve

Musculoskeletal Anatomy 1 (3 decks)

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