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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
Deltoid
Ori: Lateral clavicle, acromion, spine of scapula Ins: Deltoid tuberosity of humerus Nerve: Axillary nerve
26
Subscapularis
Ori: Subscapular fossa Ins: Lesser tubercle of humerus Nerve: Upper and lower subscapular nerves
27
Supraspinatus
Ori: Supraspinous fossa Ins: Superior facet of greater tubercle of humerus Nerve: Suprascapular nerve
28
Infraspinatus
Ori: Infraspinous fossa Ins: middle facet of greater tubercle of humerus Nerve: Suprascapular nerve
29
Teres minor
Ori: Superior lateral border of scapula Ins: Inferior facet of greater tubercle of humerus Nerve: Axillary nerve
30
Teres Major
Ori: inferior lateral border of scapula Ins: Medial lip of bicipital groove of humerus Nerve: Lower subscapular
31
SITS muscles
supraspinatus, infraspinatus, teres minor, subscapularis
32
Biceps brachii
Ori: Short head- Coracoid process of scapula Long head- supraglenoid tubercle of scapula Ins: Radial tuberosity and bicipital aponeurosis Nerve: Musculocutaneous nerve
33
Coracobrachialis
Ori: coracoid process of scapula Ins: middle portion of the medial surface of humerus Nerve: Musculocutaneous nerve
34
Brachialis
Ori: distal half of the anterior surface of humerus Ins: Ulnar tuberosity, coronoid process of ulna Nerve: Musculocutaneous nerve
35
Triceps brachii
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
Pronator teres
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
Flexor carpi radialis (FCR)
Ori: Medial epicondyle of humerus (via common flexor tendon) Ins: base of 2nd and 2rd metacarpals Nerve: Median nerve
38
Palmaris longus (PL)
Ori: medial epicondyle of humerus via common flexor tendon Ins: palmar aponeurosis and flexor retinaculum Nerve: Median nerve
39
Flexor carpi ulnaris (FCU)
``` 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
Brachioradialis (BR)
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
Extensor carpi radialis longus (ECRL)
Ori: Distal 1/3 of lateral supracondylar ridge of humerus Ins: Base of 2nd metacarpal bone Nerve: Radial nerve "Long conversation"
42
Extensor carpi radialis brevis (ECRB)
Ori: lateral epicondyle of humerus via common extensor tendon Ins: base of 3rd metacarpal bone Nerve: Radial nerve "Short conversation"
43
Extensor digitorum (ED)
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
Extensor digiti minimi (Edm)
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
Extensor carpi ulnaris (ECU)
Ori: Lateral epicondyle of humerus via common extensor tendon, middle posterior border of ulna Ins: Base of 5th metacarpal bone Nerve: Radial nerve
46
Anconeus
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
Supinator
Ori: Supinator crest of ulna, lateral epicondyle of humerus Ins: Proximal of lateral surface of radius Nerve: Radial nerve
48
Abductor pollicis brevis (APB)
Ori: Flexor retinaculum, scaphoid and trapezium Ins: Proximal phalanx of thumb Nerve: Median nerve
49
Flexor pollicis brevis (FPB)
Ori: Flexor retinaculum, trapezium Ins: Proximal phalanx of thumb Nerve: Median nerve
50
Abductor digiti minimi (ADM)
Ori: Pisiform, tendon of FCU tendon Ins: Proximal phalanx of the 5th finger Nerve: Ulnar nerve
51
Flexor digiti minimi brevis (FDMB)
Ori: flexor retiaculum and hook of hamate Ins: Proximal phalanx of the 5th finger Nerve: Ulnar nerve
52
Adductor pollicis (AP)
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
Lumbrical group: (4) "TATA"
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
Dorsal interossei muscles (4)
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
Palmar interossei muscles (3)
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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