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Anatomy 2320/2325 > Muscles (Head, Neck, and Upper Limbs) > Flashcards

Muscles (Head, Neck, and Upper Limbs) Flashcards

1
Q

Frontalis

A

Draws scalp forward, raises eyebrows

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2
Q

Occipitalis

A

Retracts Scalp

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3
Q

Orbicularis Oris

A

Compresses and purses lips

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4
Q

Orbicularis Oculi

A

Closes eye

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5
Q

Platysma

A

Pulls lower lip inferiorly, tenses skin of neck

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6
Q

Zygomaticus Major

A

Pulls corners of mouth superiorly

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7
Q

Zygomaticus Minor

A

Raises upper lip, exposing upper teeth (sneering)

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8
Q

Buccinator

A

Presses cheeks against molar teeth, holds food between teeth during chewing

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9
Q

Temporalis

A

Superior Attachment (Origin): Parietal Bone & Frontal Bone

Inferior Attachment (Insertion): Coronoid process of the mandible

Elevates and retracts mandible at jaw

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10
Q

Masseter

A

Superior Attachment (Origin): Zygomatic arch

Inferior Attachment (Insertion): Coronoid process, angle, and ramus of the mandible

Closes jaw; elevates mandible at jaw.

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11
Q

Sternocleido-mastoid

A

Superior Attachment: Mastoid process of the temporal bone

Inferior Attachment: Manubrium of the sternum; sternal end of the clavicle

Laterally flexes and rotates head; Flexes cervical portion of vertebral column

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12
Q

Splenius Capitis

A

Superior Attachment: Mastoid process of the temporal bone; occipital bone

Inferior Attachment: Ligamentum Nuchae

Rotate head to same side of contracting muscle; extend head and neck

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13
Q

Splenius Cervicis

A

Superior Attachment:Transverse processes of cervical vertebrae

Inferior Attachment: Spinous processes of T3-6

Rotate head to same side of contracting muscle; extend head and neck

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14
Q

Trapezius

A

Superior Fibers: Elevate and upwardly rotate scapula; Elevate clavicle; extend head

Middle Fibers: Adduct Scapula

Inferior Fibers: depress scapula

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15
Q

Levator Scapulae

A

Elevates scapula

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16
Q

Rhomboid Major/Minor

A

Stabilizes, elevates, and adducts scapula; downwardly rotates scapula

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17
Q

Serratus Anterior

A

Adducts and stabilizes scapula

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18
Q

Pectoralis Minor

A

Adducts and depresses scapula

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19
Q

Supraspinatus

A

Proximal Attachment (Origin): Supraspinous fossa of the scapula

Distal Attachment (Insertion): Greater Tubercle of humerus

Abducts Arm

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20
Q

Infraspinatus

A

Proximal Attachment: Infraspinous fossa of the scapula

Distal Attachment: Greater Tubercle of humerus

Laterally rotates arm

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21
Q

Teres Minor

A

Proximal Attachment: Lateral border of scapula

Distal Attachment: Greater Tubercle of humerus

Laterally rotates and weakly adducts arm

22
Q

Subscapularis

A

Proximal Attachment: Subscapular fossa of scapula

Distal Attachment: Lesser tubercle of humerus

Medially rotates arm

23
Q

Teres Major

A

Proximal Attachment: Lateral border and angle of scapula

Distal Attachment: Intertubercular sulcus of humerus

Extend, adducts, and medially rotates arm

24
Q

Latissimus Dorsi

A

Proximal Attachment: Spinous process of lower thoracic vertebrae, Ribs 8-12, and iliac crest of Ilium

Distal Attachment: Intertubercular sulcus of humerus

Extends, adducts, and medially rotates arm

25
Q

Deltoid

A

Proximal Attachment; Acromial end of clavicle; acromion and spine of scapula

Distal Attachment: Deltoid tuberosity of humerus

Abducts, flexes, and extends arm; anterior Fibers medially rotates arm; posterior Fibers laterally rotates arm.

26
Q

Pectoralis Major

A

Proximal Attachment: Clavicle; costal cartilages

Distal Attachment: Intertubercular sulcus of humerus

Flexes, adducts, and medially rotates arm

27
Q

Triceps Brachii (long head)

A

Proximal Attachment: Infraglenoid tubercle of scapula

Distal Attachment: Olecranon process of ulna

Extension of arm; extend forearm

28
Q

Triceps brachii (lateral head)

A

Proximal Attachment: Posterior shaft of humerus

Distal Attachment: Olecranon Process of ulna

extends forearm

29
Q

Triceps brachii (medial head)

A

Proximal Attachment: Distal two thirds of posterior shaft of humerus

Distal Attachment: Olecranon process of ulna

extends forearm

30
Q

Anconeus

A

Extends forearm

31
Q

Biceps Brachii (long head)

A

Proximal Attachment: Supraglenoid tubercle of scapula

Distal Attachment: Radial Tuberosity of radius

Flexes arm; flexes forearm, supinates forearm at radioulnar joint

32
Q

Biceps Brachii (Short head)

A

Proximal Attachment: Coracoid process of scapula

Distal Attachment: Radial tuberosity of radius

Flexes forearm; supinates forearm at radioulnar joint

33
Q

Coracobrachialis

A

Proximal Attachment: Coracoid process of scapula

Distal Attachment: Middle medial shaft of humerus

Adducts and flexes arm

34
Q

Brachialis

A

Proximal Attachment: Distal, anterior surface of humerus

Distal Attachment: Coronoid process of ulna

Flexes forearm

35
Q

Bracioradialis

A

Proximal Attachment: Lateral distal humerus

Distal Attachment: Styloid process of radius

Flexes forearm

36
Q

Pronator Teres

A

Pronates forearm at radioulnar joint

37
Q

Flexor Carpi radialis

A

Flexes and sbudcts hand

38
Q

Palmaris Longus

A

Weakly flexes hand; tenses fascia of palm

39
Q

Flexor Carpi ulnaris

A

Flexes and adducts hand

40
Q

Flexor Digitorum Superficilis

A

Flexes hand; flexes middle phalanx of each finger and 2nd-5th MP and PIP joints

41
Q

Flexor Digitorum Profundus

A

Flexes hand; flexes distal and middle phalanges of each finger at 2nd-5th MP, PIP, and DIP joints

42
Q

Flexor Pollicus Longus

A

Flexes distal phalanx of thumb at IP joing

43
Q

Flexor Retinaculum

A

Fibrous band of connective tissue that covers the palmaris surface of the carpal bones

44
Q

Extensor Carpi Radialus Longus

A

Extends and abducts hand

45
Q

Extensor Carpi radialis brevis

A

Extends and abducts hand

46
Q

Extensor Digitorum

A

Extends hand
Extends distal and middle phalanges at 2nd-5th MP, POP, and DIP joints

47
Q

Extensor Carpi Ulnaris

A

Extends and adducts hand

48
Q

Abductor Pollicis Longus

A

Abducts and extends thumb joint between carpals and metacarpals; weakly extends hand

49
Q

Extensor Pollicis Brevis

A

Weakly extends hand; extends thumb at MP joint

50
Q

Extensor Pollicis Longus

A

Weakly extends hand; extends thumb at MP, IP, joints

51
Q

Supinator

A

Supinates forearm at radioulnar joint

52
Q

Extensor Retinaculum

A

Fibrous band of connective tissue that covers the dorsal surface of the carpal bones

Anatomy 2320/2325 (12 decks)

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