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Gross Anatomy > Exam 2 - Muscles > Flashcards

Exam 2 - Muscles Flashcards

(85 cards)

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1
Q

Origin of clavicular part of deltoid muscle

A

lateral 1/3 of clavicle

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2
Q

Insertion of clavicular part of deltoid muscle

A

deltoid tuberosity on humerus

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3
Q

Innervation of deltoid muscle

A

Axillary nerve (c5-c6)

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4
Q

Action of clavicular part of deltoid muscle

A

-Flexion, internal rotation, adduction

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5
Q

Origin of acromion part of deltoid

A

Acromion of scapula

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6
Q

Insertion of acromion part of deltoid

A

deltoid tuberosity on humerus

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7
Q

Action of acromion part of deltoid

A

Abduction

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8
Q

Origin of spinal part of deltoid muscle

A

Spine of Scapula

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9
Q

Insertion of spinal part of deltoid muscle

A

Deltoid tuberosity on humerus

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10
Q

Action of spinal part of deltoid muscle

A

Extension, External rotation, adduction

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11
Q

Muscles of the rotator cuff

A

Supraspinatous, infraspinatous, subscapularis, teres minor

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12
Q

Origin of supraspinatus

A

Supraspinous fossa on scapula

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13
Q

Insertion of supraspinatous

A

Superior facet on greater tubercle of humerus

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14
Q

Innervation of supraspinatous muscle

A

Suprascapular nerve (C4-C6)

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15
Q

Action of supraspinatus muscle

A

Abduction (initiates abduction 15 degrees)

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16
Q

Origin of infraspinatus muscle

A

Infraspinus fossa on the scapula

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17
Q

Insertion of infraspinatus muscle

A

Middle facet on greater tubercle of humerus

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18
Q

Innervation of infraspinatus muscle

A

Suprascapular nerve (C4-C6)

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19
Q

Action of infraspinatus muscle

A

External Rotation

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20
Q

Origin of teres minor

A

Lateral border of scapula

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21
Q

Insertion of teres minor

A

Inferior facet of greater tubercle on humerus

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22
Q

Innervation of teres minor

A

Axillary nerve (C5-C6)

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23
Q

Action of teres minor

A
  • External rotation

- Weak adduction

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24
Q

Origin of subscapularis muscle

A

subscapular fossa

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25
Insertion of subscapularis
Lesser tubercle of humerus
26
Innervation of subscapularis
Subscapular nerve (C5-C6)
27
Action of subscapularis muscle
Internal rotation
28
Origin of teres major
Inferior angle of scapula
29
Insertion of teres major
Crest of lesser tubercle of humerus
30
Innervation of teres major
Lower subscapular nerve (C5-C7)
31
Action of teres major
Internal rotation, adduction, extension
32
Three parts of pectoralis major
Clavicular, Sternocostal, Abdominal
33
Origin of clavicular part of pectoralis major
Medial half of clavicle
34
Insertion of pectoralis major
Crest of greater tubercle (humerus)
35
Innervation of pectoralis major
Medial and lateral branches of pectoral nerve (C5-T1)
36
Origin of sternocostal part of pectoralis major
Sternum, Costal Cartilages 1-6
37
Insertion of Sternocostal part of pectoralis major
Crest of Greater tubercle of humerus
38
Innervation of pectoralis major
Medial and lateral branches of Pectoral nerve (C5-T1)
39
Action of pectoralis major
Adduction, internal rotation, flexion, help respiration
40
Origin of abdominal part of pectoralis major
Abdominal Sheath (outer surface)
41
Insertion of Abdominal part of Pectoralis major
Crest of greater tubercle on humerus
42
Innervation of Pectoralis Major
Medial and lateral pectoral nerve (C5-T1)
43
Three parts of the deltoid muscle
Clavicular, acromial, spinal
44
Origin of subclavius
1st rib
44
Insertion of subclavius
Inferior border of clavicle
45
Innervation of subclavius
Nerve to subclavius (C5-C6)
46
Action of subclavius
Steadies clavicle in sternoclavicular joint
47
Origin of pectoralis minor
Ribs 3-5
48
Insertion of pectoralis minor
Coracoid process on scapula
49
Innervation of pectoralis minor
Medial Pectoral Nerve (C8-T1)
50
Action of pectoralis minor
Stabilizes scapula
51
Origin of serratus anterior (superior,intermediate,inferior)
Ribs 1-9
52
Insertion of serratus anterior
Medial border of scapula
53
Innervation of serratus anterior
Long thoracic nerve (C5-C7)
54
Action of serratus anterior
Protracts
55
Origin of biceps brachii | long head and short head
long head - supraglenoid tubercle of scapula | short head - coracoid process of scapula
56
Insertion of biceps brachii
Radial tuberosity
57
Innervation of biceps brachii
Musculocutaneous n. (C5-C6)
58
Action of biceps brachii
Elbow - Flexion (in supination) -Supination Shoulder - Flexion
59
Origin of brachialis
Humerus (distal half of anterior surface)
60
Insertion of brachialis
Ulnar tuberosity
61
Innervation of brachialis
Musculocutaneous n. (C5-C6)
62
Action of brachialis
Elbow: flexor (in pronation) **Major flexor
63
Origin of brachioradialis
Distal humerus (distal surface) - lateral supracondylar ridge
64
Insertion of brachioradialis
Styloid process of radius
65
Innervation of brachioradialis
Radial nerve (C5-C6)
66
Action of brachioradialis
Elbow - weak flexor (in neutral) | -semipronation
67
Origin of coracobrachialis
Coracoid process of scapula
68
Insertion of coracobrachialis
Humerus (in line with crest of lesser tubercle)
69
Innervation of coracobrachialis
Musculocutaneous n. (C5-C7)
70
Action of coracobrachialis
Flexion, adduction, internal rotation
71
Origin of triceps brachii
Long head - infraglenoid tubercle of scapula Medial head - posterior humerus; inferior to radial groove; medial intermuscular septum Lateral head - posterior humerus; proximal to radial groove; lateral intermuscular septum
72
Insertion of triceps brachii
Olecranon of ulna
73
Innervation of triceps brachii
Radial nerve (C6-C8)
74
Action of triceps brachii
``` Elbow joint - extension Shoulder joint (*long head)- extension; adduction ```
75
Origin of anconeus
Lateral epicondyle of humerus
76
Insertion of anconeus
Olecranon of ulna (radial surface)
77
Innervation of anconeus
Radial nerve (C6-C8)
78
Action of anconeus
Extends elbow and tightens joint
79
Omohyoid origin
Superior border of scapula
80
Insertion of omohyoid
Hyoid bone
81
Innervation of omohyoid
Ansa cervicalis of cervical plexus (C1-C3)
82
Action of omohyoid
Depresses hyoid and larynx (for phonation and swallowing)
83
Posterior compartment of forearm muscles
Radialis muscles, Superficial muscles, Deep muscles
84
Radialis muscles of posterior compartment of forearm
Brachioradialis, Extensor carpi radialis longus, extensor carpi radialis brevis

Gross Anatomy (11 decks)

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