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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
Pectoralis minor
Origin: sternal ends of upper ribs Insertion: coracoid process of scapula Action: pulls scapula forward and down
25
Serratus anterior
Origin: outer surfaces of outer ribs Insertion: ventral surface of scapula Action: pulls scapula forward and down or raises ribs
26
External oblique
Origin: outer surfaces of lower ribs Insertion: iliac crest and linea alba Action: compresses abdomen tensed abdominal wall
27
Internal oblique
Origin: iliac crest and inguinal ligament Insertion: cartilages of lower ribs, linea alba and crest of pubis Action: compresses abdomen tenses abdominal wall
28
Transversus abdominis
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
Rectus abdominis
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
External intercostals
Orgin: rib above Insertion: rib below Action: raises the ribs and elevates the sternum
31
Internan intercostals
Origin:rib below Insertion: rib above Action: move ribs and sternum down and inward
32
Gluteus maximus
Origin: sacrum,coccyx and posterior surface of the ilium Insertion: posterior surface of femur and fascia of thigh Action: extends the hip
33
Gluteus medius
Origin: lateral surface of ilium Insertion: greater trochanter of femur Action: abducts and rotates thigh medially
34
Gluteus minimus
Origin: lateral surface of ilium Insertion: greater trochanter of femur Action: abducts and rotates thigh medially
35
Psoas major
Origin: lumbar intervertebral discs; bodies and transverse processes of lumbar vertebrae Insertion: lesser trochanter of femur Action: flexes thigh
36
Pectineus
Origin: spine of pubis Insertion: femur distal to lesser trochanter of femur Action: flexes and adducts thigh
37
Gracilis
Origin: symphysis pubis Insertion: medial surface of tibia Action: adducts thigh, flexes knee
38
Satorius
Longest muscle in body Origin: spine of iliac Insertion: medial surface of tibia Action: flexes knee and hip, abducts and rotates thigh laterally
39
Adductor longus
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
Adductor magnus
Origin: ischium Insertion: posterior surface of the femur Action: adducts thigh, posterior portion extend and anterior portion flexes thigh
41
Rector femoris
Origin: Spine of ilium & margin of acteabulum Insertion: quadriceps tendon to patella Action: extends leg at knee
42
Vastus lateralis
Origin: greater trochanter and posterior surface of femur Insertion: patella Action: extends leg at knee
43
Vastus medialis
Origin: medial surface of femur Insertion: patella Action: extends leg at knee
44
Vastus intermedius
Origin: anterior and lateral surface of femur Insertion: patella Action: extends leg at knee
45
Biceps femoris
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
Semimembranosus
Origin: ischial tuberosity Insertion: medial condyle of tibia Action: flexes knee, rotates leg medially, extends thigh
47
Semitendinosus
Origin: ischial tuberosity Insertion: medial surface of tibia Action: flexes knee, rotates leg medially, extends thigh
48
Sartotius
Longest muscle Origin: anterior superior iliac spine Insertion: medial surface of the tibia Action: flexes knee and hip, abducts and rotates thigh laterally
49
Gastrcnemius
Origin: condyles of femur Insertion: posterior surface of calcaneus Action: plantar flexion of foot and flexion of leg at knee
50
Soleus
Origin: proximal heads of fibula and posterior surface of tibia Insertion: posterior surface of calcaneus Action: plantar flexion of foot
51
Tibialis anterior
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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