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A&P 1 > Muscles > Flashcards

Muscles Flashcards

1
Q

Buccinator

A

Origin: Maxilla and Mandible

Insertion: orbicularis Oris

Action: compresses cheeks

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2
Q

Orbicularis Oris

A

Origin: maxilla and mandible

Insertion: lips

Action: compresses lips

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3
Q

Orbicularis oculi

A

Origin: orbit

Insertion: eyelids

Action: closes eye

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4
Q

Epicranius frontal belly

A

Origin: epicranial aponeurosis

Insertion: eyebrows and bridge of nose

Action: wrinkles forehead and raises eyebrows

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5
Q

Epicranius occipital belly

A

Origin: occipital bone

Insertion: epicranial aponeurosis

Action: tenses scalp

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6
Q

Masseter

A

Origin: zygomatic arch

Insertion: mandible

Action: elevates mandible

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7
Q

Temporalis

A

Origin: temporal line

Insertion: mandible

Action: elevates mandible

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8
Q

External intercostals

A

Origin: inferior border of each rib

Insertion: superior border of each rib

Action: elevates ribs

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9
Q

Internal intercostals

A

Origin: superior border of each rib

Insertion: inferior border of superior rib

Action: depresses ribs

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10
Q

External oblique

A

Origin: ribs 5-12

Insertion: Linea alba and iliac crest

Action: compressed abdomen, flexes vertebral
Column

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11
Q

Internal oblique

A

Origin: thoracolumbar fascia and iliac crest

Insertion: inferior ribs, lines alba, xiphoid process

Action: compresses abdomen, trunk flexion, rotate same side

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12
Q

Transversus abdominis

A

Origin: ribs 6-12, iliac crest, thoracolumbar fascia

Insertion: linea alba, pubis

Action: compresses abdomen and helps force breathing.

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13
Q

Rectus abdominis

A

Origin: superior pubis

Insertion: ribs 5-7, xiphoid process

Action: depresses ribs, flexes vertebral column, and compresses abdomen

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14
Q

Sternocleidomastoid

A

Origin: sternal end of clavicle, manubrium

Insertion: mastoid of skull

Action: flexes neck, bends head to shoulder

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15
Q

Lavatory scalpulae

A

Origin: first 4 cervical vertebrae

Insertion: vertebral border

Action: elevates scapula

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16
Q

Pectoralis minor

A

Origin: ribs 3-5

Insertion: coracoid process of scapula

Action: tilts scapula anteriorly

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17
Q

Rhomboid major

A

Origin: superior thoracic vertebrae

Insertion: vertebral border of scapula

Action: adduct scapula and downward rotation

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18
Q

Rhomboid minor

A

Origin: C7-T1

Insertion: vertebral border of scapula

Action: adduct scapula and downward rotation

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19
Q

Serratus anterior

A

Origin: anterior, superior ribs 1-8

Insertion: vertebral border of scapula

Action: protracts shoulder and rotates scapula

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20
Q

Trapezius

A

Origin: occipital bone, spinous processes of the thoracic vertebrae, and ligamentum nuchae

Insertion: clavicle, scapula

Action: elevates, retracts, depresses, rotates scapula, elevates clavicle, extends neck

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21
Q

Deltoid

A

Origin: clavicle and scapula

Insertion: humerus

Action: abduct shoulder, anterior & posterior flexion extension and rotation

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22
Q

Supraspinatus

A

Origin: supraspinous fossa of scapula

Insertion: greater tubercle of humerus

Action: abduct shoulder

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23
Q

Subscapularis

A

Origin: subscapular fossa of the scapula

Insertion: lesser tubercle of the humerus

Action: medial rotation at the shoulder

24
Q

Teres major

A

Origin: inferior angle of scapula

Insertion: intertubercular groove of humerus

Action: extension, medial rotation, addiction

25
Q

Infraspinatus

A

Origin: infraspinous fossa of scapula

Insertion: greater tubercle of humerus

Action: lateral rotation at shoulder

26
Q

Teres minor

A

Origin: lateral border of scapula

Insertion: greater tubercle of humerus

Action: lateral rotation at shoulder

27
Q

Pectoralis major

A

Origin: ribs 2-6, sternum and medial clavicle

Insertion: greater tubercle and intertubercular groove of humerus

Action: flexion, addiction, medial rotation of shoulder

28
Q

Latissimus dorsi

A

Origin: inferior thoracic and lumbar vertebrae, ribs 8-12, thoracolumbar fascia

Insertion: intertubercular groove of humerus

Action: extend, adduct, medial rotation of shoulder

29
Q

Biceps brachii

A

Origin: coracoid process; Supraglenoid tubercle

Insertion: tuberosity of radius

Action: flexion of elbow

30
Q

Brachialis

A

Origin: Distal surface of humerus

Insertion: ulna

Action: elbow flexion

31
Q

Brachioradialis

A

Origin: lateral epicondyl of humerus

Insertion: radius

Action: elbow flexion

32
Q

Triceps brachii

A

Origin: lateral head/ later humerus long head/ infraglenoid tubercle scapula. Medial head: posterior of humerus

Insertion: olecranon

Action: extension of elbow

33
Q

Pronator

A

Origin: distal ulna

Insertion: distal radius

Action: pronation

34
Q

Pronator teres

A

Origin: coranoid process of ulna and humerus

Insertion: midlateral radius

Action: pronation

35
Q

Supinator

A

Origin: lateral epicondyle of humerus, radial notch of ulna

Insertion: radial tuberosity

Action: supination

36
Q

Gluteus Maximus

A

Origin: Iliac crest, lateral ilium, sacrum coccyx, thoracolumbar fascia

Insertion: femur

Action: extension and lateral hip rotation

37
Q

Gluteus medius

A

Origin: anterior Illiac crest

Insertion: greater trochanter of femur

Action: abduction and medial rotation of hip

38
Q

Gluteus minimus

A

Origin: lateral Ilium

Insertion: greater trochanter of femur

Action: abduction and medial rotation of hip

39
Q

Periformus

A

Origin: sacrum

Insertion: greater trochanter of femur

Action: lateral rotation and abduction of hip

40
Q

Adductor longus

A

Origin: inferior ramus of pubis

Insertion: Linea aspira of femur

Action: adduct thigh and downward rotation

41
Q

Adductor magnus

A

Origin: inferior ramus of pubis

Insertion: Linea aspera and adductor tubercle of femur

Action: adduct scapula and downward rotation

42
Q

Iliposas Psoas Major

A

Origin: Vertebrae T12-L5

Insertion: Iliacus

Action: flex hip

43
Q

Iliacus

A

Origin: Ilium

Insertion: femur (tendon fused with psoas major)

Action: flexion of hip

44
Q

Biceps femoris

A

Origin: Linea aspera of femur and ischial tuberosity

Insertion: Lateral condyle of tibia and head of fibula

Action: flexion of knee

45
Q

Semimembranous

A

Origin: Ischial Tuberosity

Insertion: medial condyle of tibia

Action: flexion of the knee

46
Q

Semitendonosus

A

Origin: ischial tuberosity

Insertion: proximal, medial surface of tibia near gracialis

Action: flexion of knee

47
Q

Popliteus

A

Origin: lateral condyle of femur

Insertion: tibial shaft

Action: medial rotation of tibia and flexion of knee

48
Q

Rectus femoris

A

Origin: Iliac spine; superior Ilium

Insertion: tibial tuberosity by the patellar ligament (tibiopatellar ligament)

Action: flexion at hip and extension at knee

49
Q

Vastus intermedius

A

Origin: anterolateral femur and Linea aspera

Insertion: tibiopatellar ligament

Action: extension of knee

50
Q

Vastus lateralis

A

Origin: femur and Linea aspera

Insertion: tibiopatellar ligament

Action: extension of knee

51
Q

Vastus medialis

A

Origin: entire length of Linea aspera of femur

Insertion: tibiopatellar ligament

Action: extension of knee

52
Q

Tibialis Anterior

A

Origin: lateral condyle

Insertion: 1st metatarsal

Action: flexion at ankle.

53
Q

Gastronemicus

A

Origin: femoral condyles

Insertion: calcaneus

Action: flex at knee and plantar flexion

54
Q

Fibularis longus

A

Origin: lateral tibia and proximal fibula

Insertion: 1st metatarsal and medial cuneiform

Action: reversion of foot and plantar flexion

55
Q

Soleus

A

Origin: proximal fibula, posterior medial tibia gastroc.

Insertion: calcaneus/tendon

Action: plantar flexion of ankle

A&P 1 (2 decks)

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