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Anatomy > Muscles > Flashcards

Muscles Flashcards

0
Q

Triceps brachii

A

Origin: tuberacle below glenoid cavity, lateral and medial surfaces of the humerous
Insertion: olcrenon process of ulna
Action: extends elbow

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1
Q

Biceps brachii

A

Origin: coracoid process of scapula, tuberosity above glenoid fossa of scapula.
Insertion: radial tuberosity
Action: flexes elbow and rotates hand laterally

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2
Q

Brachialis

A

Origin: anterior shaft of humerous
Insertion: coronoid process of ulna
Action: flexes elbow

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3
Q

Brachioradialis

A

Origin: distal lateral end of humerous
Insertion: styloid process of humerous
Action: flexes elbow

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4
Q

Flexor carpi radialis

A

Origin: medial epicondyle of humerous
Insertion: base of 2nd & 3rd metacarpal
Action: flexes wrist & abducts hand

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5
Q

Frontalis

A

Origin: aporneurosis between frontalis & occipitalis
Insertion: skin of eyebrow
Action: wrinkles forehead & moves scalp

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6
Q

Orbicularis oculi

A

Origin: frontal & maxillary bones
Insertion: tissue of eyelid
Action: closes eye

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7
Q

Orbicularis oris

A

Origin: muscles near the mouth
Insertion: skin of central lip
Action: closes mouth

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8
Q

Masseter

A

Origin: zygomatic arch
Insertion: lateral surface of mandible
Action: elevates mandible (closes mouth)

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9
Q

Platysma

A

Origin: fascia in upper chest
Insertion: lower border of mandible
Action: draws angle of jaw downward as in pouting

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10
Q

Buccinator

A

Origin: maxilla & mandible
Insertion: orbicularis oris muscle
Action: compresses cheek inward as in blowing air

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11
Q

Temporalis

A

Origin: temporal bone
Insertion: coronoid process and ramus of mandible
Action: elevates mandible and moves it side to side

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12
Q

Sternocleidomastoid

A

Origin: sternum & clavicle
Insertion: mastoid process of temporal bone
Action: pulls headbto one side, flexes neck and elevates sternum

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13
Q

Trapezius

A

Origin: occipital bone & spines of cervical and thoracic vertebrae
Insertion: clavicle, spine, and acromion procecess of the scapula
Action: rotates the scapula, various fibers raise the scapula, pulls scapula medially, or pull scapula and shoulder downward

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14
Q

Deltoid

A

Origin: acromion process of scapula, spine of scapula, clavicle
Insertion: deltoid tuberosity of humerous
Action: abducts, extends and flexes the arm

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15
Q

Latissimus dorsi

A

Origin: spines of sacral, lumbar and lower thoracic vertebrae
Insertion: intertubercular groove of humerous
Action: retracts shoulder, extends, adducts and rotates arm medially

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16
Q

Levator scapulae

A

Origin: transverse process of cervicle vertibrae
Insertation: medial margin of scapula
Action: elevates the scapula

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17
Q

Teres major

A

Origin: lateral border of the scapula
Insertion: intertubercular groove of humerous
Action: extends, adducts and rotates arm medially

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18
Q

Teres minor

A

Origin: lateral border of scapula
Insertion: greater tubercle of humerous
Action: rotates arm laterally

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19
Q

Infraspinatus

A

Origin: posterior surface of scapula below spine
Insertion: greater tubercle of humerous
Action: rotates arm laterally

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20
Q

Supraspinatus

A

Origin: posterior surface of scapula above spine
Insertion: greater tubercle of humerous
Action: abducts the arm

21
Q

Subscapularis

A

Origin: anterior surface of scapula
Insertion: lesser tubercle of humerous
Action: rotates arm medially

22
Q

Rhomboid major

A

Origin: spines of upper thoracic vertebrae
Insertion: medial border of scapula
Action: rectracts, elevates, and rotates scapula

23
Q

Pectoralis major

A

Origin: clavicle, sternum, costal cartilages
Insertion: intertubuclar groove of humerous
Action: adducts, flexes and rotates arm medially

24
Q

Pectoralis minor

A

Origin: sternal ends of upper ribs
Insertion: coracoid process of scapula
Action: pulls scapula forward and down

25
Q

Serratus anterior

A

Origin: outer surfaces of outer ribs
Insertion: ventral surface of scapula
Action: pulls scapula forward and down or raises ribs

26
Q

External oblique

A

Origin: outer surfaces of lower ribs
Insertion: iliac crest and linea alba
Action: compresses abdomen tensed abdominal wall

27
Q

Internal oblique

A

Origin: iliac crest and inguinal ligament
Insertion: cartilages of lower ribs, linea alba and crest of pubis
Action: compresses abdomen tenses abdominal wall

28
Q

Transversus abdominis

A

Origin: iliac crest, inguinal ligament, lumbar processes, costal cartilage or lower ribs
Insertion: iliac crest, inguinal ligament, lumbar processes, costal cartilage or lower ribs
Action: compress abdomen tenses abdominal wall

29
Q

Rectus abdominis

A

Origin: crest of pubis and sympysis pubis
Insertion: costal cartilage of ribs and xiphoid process of sternum
Action: flexes vertebral column in addition to compressing and tensing the abdominal wall

30
Q

External intercostals

A

Orgin: rib above
Insertion: rib below
Action: raises the ribs and elevates the sternum

31
Q

Internan intercostals

A

Origin:rib below
Insertion: rib above
Action: move ribs and sternum down and inward

32
Q

Gluteus maximus

A

Origin: sacrum,coccyx and posterior surface of the ilium
Insertion: posterior surface of femur and fascia of thigh
Action: extends the hip

33
Q

Gluteus medius

A

Origin: lateral surface of ilium
Insertion: greater trochanter of femur
Action: abducts and rotates thigh medially

34
Q

Gluteus minimus

A

Origin: lateral surface of ilium
Insertion: greater trochanter of femur
Action: abducts and rotates thigh medially

35
Q

Psoas major

A

Origin: lumbar intervertebral discs; bodies and transverse processes of lumbar vertebrae
Insertion: lesser trochanter of femur
Action: flexes thigh

36
Q

Pectineus

A

Origin: spine of pubis
Insertion: femur distal to lesser trochanter of femur
Action: flexes and adducts thigh

37
Q

Gracilis

A

Origin: symphysis pubis
Insertion: medial surface of tibia
Action: adducts thigh, flexes knee

38
Q

Satorius

A

Longest muscle in body
Origin: spine of iliac
Insertion: medial surface of tibia
Action: flexes knee and hip, abducts and rotates thigh laterally

39
Q

Adductor longus

A

Origin: pubis
Insertion: posterior surface of the femur
Action: adducts, flexes and laterally rotates thigh. Adducts thigh, posterior portion extend and anterior portion flexes thigh

40
Q

Adductor magnus

A

Origin: ischium
Insertion: posterior surface of the femur
Action: adducts thigh, posterior portion extend and anterior portion flexes thigh

41
Q

Rector femoris

A

Origin: Spine of ilium & margin of acteabulum
Insertion: quadriceps tendon to patella
Action: extends leg at knee

42
Q

Vastus lateralis

A

Origin: greater trochanter and posterior surface of femur
Insertion: patella
Action: extends leg at knee

43
Q

Vastus medialis

A

Origin: medial surface of femur
Insertion: patella
Action: extends leg at knee

44
Q

Vastus intermedius

A

Origin: anterior and lateral surface of femur
Insertion: patella
Action: extends leg at knee

45
Q

Biceps femoris

A

Origin: ischial tuberosity and linea aspera of femur
Insertion: head of fibula and lateral condyle of tibia
Action: flexes knee, extends and laterally rotates thigh at hip

46
Q

Semimembranosus

A

Origin: ischial tuberosity
Insertion: medial condyle of tibia
Action: flexes knee, rotates leg medially, extends thigh

47
Q

Semitendinosus

A

Origin: ischial tuberosity
Insertion: medial surface of tibia
Action: flexes knee, rotates leg medially, extends thigh

48
Q

Sartotius

A

Longest muscle
Origin: anterior superior iliac spine
Insertion: medial surface of the tibia
Action: flexes knee and hip, abducts and rotates thigh laterally

49
Q

Gastrcnemius

A

Origin: condyles of femur
Insertion: posterior surface of calcaneus
Action: plantar flexion of foot and flexion of leg at knee

50
Q

Soleus

A

Origin: proximal heads of fibula and posterior surface of tibia
Insertion: posterior surface of calcaneus
Action: plantar flexion of foot

51
Q

Tibialis anterior

A

Origin: lateral condyle and lateral surface of tibia
Insertion: tarsal bne (cuneiform) and first metatarsal
Action: dorsiflexin and inversion of foot

Anatomy (8 decks)

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