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PT Anatomy Unit 1 > Test 3 Muscles > Flashcards

Test 3 Muscles Flashcards

1
Q

Biceps Brachii (both heads)

A

Short head: orig. Coracoid Process. Attach. Radial tuberosity.
Long head: orig. Supreglenoid tubercle. Attach. Forearm aponeurosis

Musculocutaneus nerve

Supinates forearm.
Flexes Supinated forearm
Flexes arm

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2
Q

Triceps Brachii (all three)

A

Origin:
Long head: Infraglenoid tubercle on scapula
long head insert: Medial and lateral heads of olecranon process on the ulna.

Lateral head: Posterior surface of the humerus superior to the radial groove.
Medial head: Posterior surface of the humerus inferior to the radial groove.
Insertion: Common tendon insertion

Radial Nerve

Extension of forearm and at glenohumeral joint (arm)
Long head: Accessory adductor

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3
Q

Long Head of the Triceps

A

Orig Infraglenoid tubercle on scapula
Insert Medial and lateral heads of olecranon process on the ulna.

Radial nerve

Extension of forearm and at glenohumeral joint(arm)
Accessory adductor**

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4
Q

Medial Head of the Triceps

A

Orig: Posterior surface of the humerus inferior to the radial groove.
Insert: Common tendon insertion

Radial nerve

Extension of the forearm and at the glenohumeral joint (arm)

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5
Q

Lateral Head of the Triceps

A

Orig: Posterior surface of the humerus superior to the radial groove
Insert: Common tendon insertion

Radial Nerve

Extension of the forearm and at the glenohumeral joint (arm)

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6
Q

Biceps Brachii (long head)

A

Orig: Supraglenoid tubercle
Insert: Forearm aponeurosis

Musculocutaneous Nerve.

Supinates forearm , Flexes supinated forearm, Flexes arm.

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7
Q

Biceps Brachii (short head)

A

Orig: Coracoid process
Insert: Radial tuberosity

Musculocutaneous Nerve.

Supinates forearm, Flexes supinated forearm, Flexes arm.

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8
Q

Brachialis

A

Orig: Distal 1/2 ANTERIOR surface of humerus, intermuscular septae.
Insert: Ulnar tuberosity

Musculocutaneous Nerve.

POWERFUL flexor of forearm in ALL positions.

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9
Q

Coracobrachialis

A

Orig: Coracoid process of scapula
Insert: Middle 1/3 of MEDIAL surface of the humerus.

Musculocutaneous Nerve.

Flexion and adduction of arm.

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10
Q

Deltoid (whole muscle)

A

Origin:
Posterior: Inferior edge of the crest of the spine of the scapula
Middle: Lateral margin of the aromion
Anterior: Anterior border of lateral 1/3 of clavicle.

Insert: Deltoid tuberosity of humerus.

Axillary Nerve.

Abductor (after initial 15 degrees)
Anterior fibers flex arm
Posterior fibers extend arm.

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11
Q

Deltoid (Anterior Fibers)

A

Orig: Anterior border of lateral 1/3 of clavicle
Insert: Deltoid tuberosity of humerus

Axillary nerve

Abductor (after initial 15 degrees)
Anterior fibers flex arm.

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12
Q

Deltoid (posterior fibers)

A

Orig: Inferior edge of the crest of the spine of the scapula.
Insert: Deltoid tuberosity of humerus.

Axillary nerve

Abductor *after initial 15 degrees
Posterior fibers Extend arm.

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13
Q

Trapezius

A 
Origin:
Superior Nuchal Line.
Occipital protuberance
Medial margin of ligamentum nuchae
Spinous process of C7-T12

Insert:
Superior edge of the crest of the spine of the scapula, acromion, posterior border of lateral 1/3 of clavicle.

Cranial Nerve XI (Spinal accessory nerve)

Elevates and rotates the scapula
Middle fibers retract scapula
Lower fibers depress scapula

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14
Q

Trapezius upper fibers

A

Orig.: Superior nuchal line and Occipital Protuberand and Medial margin of ligamentum nuchae.
Insert: Superior edge of the crest of the spine of the scapula, acromion, posterior border of lateral 1/3 of clavicle

Cranial Nerve XI (Spinal accessory nerve)

Elevates and rotates the scapula

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15
Q

Trapezius middle fibers

A

Orig: Medial margin of ligamentum nuchae, Spinous processes of C7-?
Insert: Superior edge of the crest of the spine of the scapula, acromion, posterior border of lateral 1/3 of clavicle.

Cranial Nerve XI (Spinal accessory nerve)

Middle fibers retract scapula.

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16
Q

Trapezius Lower fibers

A

Orig: Spinous processes of C& - T12
Insert: Superior edge of the crest of the spine of the scapula, acromion, posterior border of lateral 1/3 of clavicle.

Cranial Nerve XI (Spinal accessory nerve)

Lower fibers depress scapula.

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17
Q

Levator Scapula

A

Orig. Transverse process of C1 and C2 and Posterior tubercles of transverse processes of C3-C4
Insert. Posterior surface of medial border of scapula from superior angle to root of the spine of scapula.

Dorsal Scapular nerve

Elevates scapula

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18
Q

Rhomboid Minor

A

Orig: Lower end of ligamentum nuchae. and Spinous processes of C7 and T1.
Insert: Posterior surface of medial border of scpula at the root of the spine of the scapula.

Dorsal Scapular Nerve

Elevates and retracts scapula.
Downward rotation of scapula.

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19
Q

Rhomboid Major

A

Orig: Spinous processes of T2-T5 and intervening supraspinous ligaments.
INsert: Posterior surface of medial border of scapula from root of the spine of the scapula to the inferior angle

Dorsal scapular nerve

Elevates and retracts scapula
Downward rotation of scapula

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20
Q

Supraspinatus

A

Orig: Medial 2/3 of the supraspinous fossa
Insert: Superior facet on greater tubercle of humerus

Suprascapular nerve

Abduction

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21
Q

Infraspinatus

A

Orig: Medial 2/3 of the infraspinous fossa
Insert: Middle facet on greater tubercle of humerus

Suprascapular nerve

Lateral rotation of the arm.

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22
Q

Teres Minor

A

Orig: Lateral border of the scapula (Upper 2/3 of a flattened strip of bone)
Insert: Inferior facet on greater tubercle of humerus.

Axillary Nerve

Lateral rotation of the arm.

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23
Q

Teres Major

A

Orig: Inferior angle of the scapula
Insert: Medial lip of the intertubercular sulcus on anterior side of humerus

Inferior subscapular nerve

Medial rotation and extension of the arm.

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24
Q

Pectoralis Major

A

Orig: Clavicular head: Anterior surface of the medial half of clavicle
Sternal Head: Anterior surface of sternum.
Insert: Lateral lip of intertubercular sulcus of humerus.

Medial and lateral pectoral nerves

Flexion, adduction, and medial rotation of arm
Clavicular head: Flexion of extended arm.

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25
Q

Pectoralis Major Clavicular head

A

Orig: Anterior surface of the medial half of clavicle
Insert: Lateral lip of intertubercular sulcus of humerus.

Medial and lateral pectoral nerves

Flexion of extended arm.

26
Q

Pectoralis Major Sternal Head

A

Orig: Anterior suface of sternum.
Insert: Lateral lip of intertubercular sulcus of humerus.

Medial and lateral pectoral nerves.

FLexion, adduction, and medial rotation of arm.

27
Q

Subclavius

A

Orig: First rib at junction of rib and costal cartilage
Insert: Groove of inferior surface of middle 1/3 of clavicle

Nerve to subclavius

Pulls tip of shoulder down
Pulls clavicle medially

28
Q

Subscapularis

A

Orig: Middle 2/3 of subscapular fossa
Insert: Lesser tubercle of humerus

Upper and lower subscapular nerves

Medial rotation of the arm.

29
Q

Latissimus Dorsi

A

Orig: Spinous process of lower six thoracic vertebrae. Thoracolumbar fascia to the spinous processes of the lumbar vertebrae. Iliac crest. Lower 3-4 ribs.
Insert: Floor of intertubercular sulcus

Thoracodorsal nerve.

Adduction
Medial rotation
Extension

30
Q

Flexor Carpi Ulnaris

A

Orig: Medial epicondyle of the humerus
Insert: Pisiform, hamate, base of metacarpal 5

Ulnar nerve

Flexes elbow
Flexes and adducts wrist.

31
Q

Palmaris Longus

A

Orig:Medial epicondyle of the humerus
Insert: Palmar aponeurosis of the hand

Median nerve

Flexes elbow
Flexes wrist.

32
Q

Flexor Carpi Radialis

A

Orig: Medial epicondyle of the humerus
Insert: Base of metacarpal 2 and 3

Median nerve

Flexes elbow
Flexes and abducts wrist.

33
Q

Pronator Teres

A

Orig: Medial epicondyle and adjacent supraepicondylar ridge
Insert: Mid-shaft of the radius

Median Nerve

Flexes elbow
Pronation of Forearm

34
Q

Flexor Digitorum Superficialis

A

Orig: Medial epicondyle of humerus and oblique line of radius
Insert: Middle Phalanges of digits 2-5.

Median Nerve

Flexes PIP joint of 2-5, Flexes MCP joint 2-5 (fingers), Flexes wrist.

35
Q

Flexor Digitorum Profundus

A

Orig: Anterior and medial surfaces of the ulna and interosseous membrane.
Insert: Distal phalanges of digits 2-5

Lateral half: Median (lateral 3 fingers)
Medial half: Ulnar (Ring and pinky finger)

Flexes DIP of 2-5, flexes MCP joint 2-5, flexes wrist.

36
Q

Flexor Pollicis Longus

A

Orig: Anterior surface of radius and radial half of interosseous membrane.
Insert: Base of distal phalanx of thumb.

Median Nerve

Flexes IP joint of the thumb, Flexes the MCP joint of the thumb.

37
Q

Pronator Quadratus

A

Orig: Distal anterior surface of ulna
Insert: Distal anterior surface of radius

Median Nerve

Pronation

38
Q

Brachioradialis

A

Orig: Lateral supracondylar ridge of humerus
Insert: Lateral surface of distal end of radius

Radial Nerve

Flexor of elbow joint when forearm is mid pronated.

39
Q

Extensor Carpi Radialis Longus

A

Orig: Lateral supracondylar ridge of humerus.
Insert: Dorsal surface of base of metacarpal 2.

Radial nerve

Extends and abducts the wrist.

40
Q

Extensor Carpi Radialis Brevis

A

Orig: Lateral epicondyl of the humerus
Insert: Dorsal surface and base of metacarpal 2 and 3.

Deep branch of radial nerve

Extends and abducts the wrist.

41
Q

Extensor Digitorum

A

Orig: Lateral epicondyle of humerus
Insert: Four tendons that insert via extensor hood

Posterior interosseous nerve

Extends digits 2-5, extends wrist.

42
Q

Extensor Digiti Minimi

A

Orig: Lateral epicondyle of humerus.
Insert: Extensor hood of the little finger.

Posterior interosseous nerve

Extends little finger.

43
Q

Extensor Carpi Ulnaris

A

Orig: Lateral epicondyle of humerus
Insert: Base of metacarpal 5

Posterior interosseous nerve

Extends and adducts wrist

44
Q

Anconeus

A

Orig: Lateral epicondyle of humerus
Insert: Olecranon and proximal posterior surface of ulna

Radial Nerve

Abduction of the ulna, extensor of elbow joint.

45
Q

Supinator**

A

No Orig
No Insert

Posterior interosseous nerve

Supination

46
Q

Abductor Pollicis Longus

A

Orig: Posterior surfaces of the ulna and radius and interosseous membrane.
Insert: Lateral side of base of metacarpal 1.

Posterior interosseous nerve

Abducts CMC joint of the thumb. Extends wrist, abducts thumb.

47
Q

Extensor Pollicis Brevis

A

Orig: Posterior surface of radius and interosseous membrane
Insert: Dorsal surface of base of proximal phalanx of the thumb

Posterior interosseous nerve

Extends MCP and CMC joints of the thumb. Extends wrist, abducts wrist.

48
Q

Extensor Pollicis Longus

A

Orig: Posterior surface of ulna and interosseous membrane
Insert: Base of distal phalanx of the thumb.

Posterior interosseous nerve

Extends IP, MCP, and CMC joints of the thumb. Extends wrist

49
Q

Extensor Indices

A

Orig: Posterior surface of ulna and interosseous membrane
Insert: Extensor hood of index finger

Posterior interosseous nerve

Extends the index finger. Extends wrist.

50
Q

Palmaris Brevis

A

O: Palmar aponeurosis and flexor retinaculum (retinaculum = Transverse carpal ligament)
I: Dermis of skin on the medial margin of the hand

Superficial branch of the Ulnar nerve

Improves grip

51
Q

Dorsal Interossei

A

O: Adjacent sides of metacarpals
I: Extensor expansion and base of proximal phalanx of digits 2-4.

Deep branch of the ulnar nerve

Abduction of digits 2-4 at the MCP joint, flexes MCP while extending IP joints of digits 2-4

52
Q

Palmar Interossei

A

O: Sides of metacarpals
I: Extensor expansion and base of proximal phalanx of digits 2, 4, 5.

Deep branch of the ulnar nerve.

Adduction of digits 2, 4, and 5 at the MCP joints, flexes MCP while extending IP joints of digits 2, 4, and 5

53
Q

Adductor Pollicis

A

O: Transverse head: Metacarpal 3; Oblique head: Capitate and bases of metacarpal 2 and 3.
I: Base of proximal phalanx and extensor expansion of thumb.

Deep branch of the ulnar nerve

Adducts thumb

54
Q

Lumbricals

A

O: Tendons of flexor digitorum profundus.
I: Extensor expansions of digits 2-5

Medial two: Deep branch of the ulnar nerve.
Lateral two: Digital branches of the median nerve.

Flexes MCP joints while extending IP joints of digits 2-5.

55
Q

Opponens Pollicis

A

O: Tubercle of trapezium and flexor retinaculum
I: Lateral margin of adjacent palmar surface of metacarpal 1.

Recurrent branch of median nerve.

Medially rotates the thumb.

56
Q

Abductor Pollicis Brevis

A

O: Tubercles of scaphoid and trapezium and adjacent flexor retinaculum.
I: Proximal phalanx and extensor hood of thumb

Recurrent branch of median nerve

Abducts thumb at MCP joint.

57
Q

Flexor Pollicis Brevis

A

O: Tubercle of the trapezium and flexor retinaculum
I: Proximal phalanx of the thumb.

Recurrent branch of median nerve

Flexes thumb at MCP joint.

58
Q

Opponens Digiti Minimi

A

O: Hook of hamate and flexor retinaculum
I: Medial aspect of metacarpal 5

Deep branch of the ulnar nerve

Laterally rotates metacarpal 5

59
Q

Abductor Digiti Minimi

A

O: Pisiform, pisohamate ligament, tendon of flexor carpi ulnaris.
I: Proximal phalanx of digit 5

Deep branch of the ulnar nerve

Abducts digit 5 at MCP joint

60
Q

Flexor Digiti Minimi

A

O: Hook of hamate and flexor retinaculum
I: Proximal phalanx of digit 5

Deep branch of the ulnar nerve

Flexes digit 5 at MCP joint.

PT Anatomy Unit 1 (11 decks)

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