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Anatomy 109 > Muscles > Flashcards

Muscles Flashcards

0
Q

Masseter

A

It’s origin is the zygomatic Temporal arch.
It inserts on the angle of the mandible

This muscle elevates and protracts the jaw.

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1
Q

Muscle of facial expression (CN7)

A

It’s origin and insertion is on the superficial tissue of the face.

It’s action is for facial expressions

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2
Q

Temporalis

A

It originates on the frontal and parietal
It inserts on the coronoid process of the mandible

This muscle elevates the jaw

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3
Q

Sternocleidomastoid

A

It originates on the sternum and clavicle
It inserts on the mastoid process

This muscle is in charge of flexion and rotation of the head

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4
Q

External intercostals

A

It originates on the inferior margin of the rib above
It inserts on the superior margin of the rib below

This muscle is in charge of inspiration and expiration

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5
Q

Internal and innermost intercostals

A

It originates on inferior margin of the rib above
It inserts on the superior margin of the rib below

It’s action is inspiration and expiration

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6
Q

Obliques:

External, internal, and transverse abdominis

A

They originate on the ribs
They insert of the linea Alba via the rectus sheath

It’s action is ipsilateral rotation with unilateral contraction and bilateral contraction which results in flexion at the waist

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7
Q

Rectus abdominis

A

It originates on the pubis
It inserts on the xiphoid and coastal cartilage

It’s job is flexion at the waist

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8
Q

Trapezius

A

It originates on the Occipital and thoracic vertebrae
It inserts on the scapula and the clavicle

The action of this muscle as head extension, respiration, back extension, and shoulder retraction

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9
Q

Rhomboid major and minor

A

They originate on the thoracic vertebrae
These insert on the medial border of the scapula

Their job is for shoulder retraction and it braces the shoulder

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10
Q

Levator scapulae

A

It originates on the transverse processes of the cervical vertebrae
It inserts on the superior angle of the scapula

It’s job is to elevate the scapula

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11
Q

Erector spinae (spinalis,longissimus, and iliocostalis)

A

They originate on the vertebral processes
They insert on the superior angle of the scapula

Their actions are to erect the spine and some lateral flexion

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12
Q

Pectoralis minor

A

It originates on ribs four through six
It inserts on the coracoid process

It’s action is to draw the scapula laterally and it also helps in respiration

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13
Q

Pectoralis major

A

It originates on the clavicle, sternum, coastal cartilages numbers one through six
It inserts on the anterior surface of the proximal humerus

It’s action is to flex, adduct, and medially rotate the humerus

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14
Q

Serratus Anterior

A

It originates on the anterior chest wall (on ribs)
It inserts on the anterior surface of the medial border of the scapula

It’s action is scapular protraction, depression, and lateral rotation

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15
Q

Deltoid

A

It originates on the scapula and the clavicle
It inserts on the deltoid tuberosity of the humerus

It’s action is shoulder abduction, flexion, extension

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16
Q

Teres major

A

It originates on the inferior angle of the scapula
It inserts on the anterior surface of the proximal humerus

It’s action is to medially rotate and extend the arm

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17
Q

Latissimus Dorsi

A

It originates on that ilium, lower thoracic and lumbar vertebrae
It inserts on the anterior surface of the proximal humerus

It’s action is to medially rotate and extend the arm

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18
Q

Supraspinatus

A

It originates on the posterior scapula
It inserts on the greater tubercle of the humerus

It’s job is to stabilize the shoulder joint and it assists in abduction of the arm

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19
Q

Infraspinatus

A

It originates on the posterior scapula
It inserts on the greater tubercle of the humerus

It’s job is to stabilize the shoulder joint and assist in abduction of the arm

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20
Q

Teres minor

A

It originates on the lateral border and the posterior surface of the scapula
It inserts on the greater tubercle of the humerus

It’s action is to stabilize the shoulder joint and assist in abduction of the arm

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21
Q

Subscapularis

A

It originates on the anterior surface of the scapula
It inserts on the lesser tubercle

It’s action is to stabilize the shoulder joint and to medially rotate the arm

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22
Q

Diaphragm

A

It originates and inserts on the peripheral body wall structures

It’s action is to separate thoracic and abdominal cavity. It also assist in breathing

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23
Q

Pelvic floor muscles (perinium)

A

They originate and insert on the pubis, ischium, and the Coccyx

Their actions are to keep the visceral organs from passing through the pelvic outlet. They also assist with continence and much more

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24
Q

Biceps brachii

A

They originate on the scapula
It inserts on the radial tuberosity

It’s action is flexion at the forearm

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25
Q

Brachialis

A

It originates at the anterior of the distal humerus
It inserts at the coronoid process of the ulna

It’s job is flexion at the forearm

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26
Q

Triceps brachii

A

It originates on the scapula
It inserts on the olechranon process of the ulna

It’s action is extension at the forearm

27
Q

Supinator

A

It originates on the lateral epicondyle
It inserts on the proximal radial shaft

It’s job is to supinate the forearm

28
Q

Pronator Teres

A

It originates on the medial epicondyle
It inserts on the radial shaft

It’s action is to pronate the forearm

29
Q

Pronator quadratus

A

It originates on the distal Ulnar shaft
It inserts on the distal radial shaft

It’s action is to pronate the forearm

30
Q

Brachioradialis

A

It originates on the lateral side of the distal humerus
It inserts on the lateral surface of the radius

It’s action is flexion of the forearm

31
Q

Flexor carpi radialis

A

It originates on the medial epicondyle
It inserts on the carpal bones

It’s job is flexion at the wrist or digits

32
Q

Palmaris longus

A

It originates on the medial epicondyle
Inserts on the carpal bones

It’s job is flexion of the wrist or digits

33
Q

Flexor carpi ulnaris

A

It originates on the medial epicondyle
Inserts on the carpal bones

Action is flexion of the wrist or digits

34
Q

Flexor digitorum superficialis

A

It originates on the medial epicondyles, superior half of the radius
It inserts on the phalanges

It’s action is flexion of the wrist or digits

35
Q

Flexor digitorum profundus

A

It originates on the proximal ulna and interosseous membrane
It inserts on the phalanges

It’s action is flexion at the wrist or digits

36
Q

Flexor pollicis longus

A

It originates on the radius and interosseous membrane
It inserts on the phalanges

Is action is flexion of the wrist or digits

37
Q

Extensor carpi radialis longus

A

It originates on the lateral epicondyle
It inserts on the base of the metacarpals on the radial side

It’s action is extension at the wrist or digits

38
Q

Extensor carpi radialis brevis

A

It originates on the lateral epicondyle
It inserts on the base of the metacarpals on the radial side

It extends at the wrist or the digits

39
Q

Extensor carpi ulnaris

A

It originates on the lateral epicondyle
It inserts on the base of the metacarpals on the ulnar side

It extends at the wrist or digits

40
Q

Extensor digitorum

A

Originates on the lateral epicondyle
Inserts on the phalanges

It extends at the wrist or at the digits

41
Q

Extensor digiti minimi

A

It originates on the lateral epicondyle
Inserts on the phalanges

It extends at the wrist or digits

42
Q

Extensor indicis

A

It originates on the ulna or the interosseous membrane
It inserts on the index finger

It’s action is to extend the index finger

43
Q

Extensor pollicis longus

A

It originates on the posterior side of the ulna
It inserts on the thumb

It’s action is to extend the thumb

44
Q

Extensor pollicis brevis

A

It originates on the posterior side of the radius
It inserts on the thumb

It’s job is to extend the thumb

45
Q

Abductor pollicis longus

A

It originates on the posterior radius and ulna
It inserts on the base of the first metacarpal

job is to abduct the thumb

46
Q

Thenar muscles

A

These muscles control movement of the thumb. Specifically in opposition.

47
Q

Hypothenar muscles

A

These muscles control the movement of the pinky. Specifically in opposition.

48
Q

Psoas major and minor

A

They originate on the lumbar vertebrae
They insert on the posterior femur

Their action is for hip flexion

49
Q

Sartorius

A

It originates on the iliac crest
It inserts on the medial surface of the proximal tibia

It’s action is for flexion, abduction, and lateral rotation of the hip. It is also used in flexion of the knee.

50
Q

Quadriceps femoris- rectus femoris

A

It originates on the iliac crest
It inserts on the quadriceps tendon into the superior surface of the patella

It’s job is extension at the knee

51
Q

Quadriceps femoris- vastus medialis

A

It originates on the medial and posterior shaft of the femur
It inserts on the quadriceps tendon into the superior surface of the patella

It’s job is extension at the knee

52
Q

Quadriceps femoris- Vastis lateralis

A

It originates on the lateral and posterior shaft of the femur
It inserts on the quadriceps tendon into the superior surface of the patella

It’s job is extension of the knee

53
Q

Quadriceps femoris- Vastis intermedius

A

It originates on the anterior and lateral shaft of the femur
It inserts on the quadriceps tendon into the superior surface of the patella

It’s job is extension at the knee

54
Q

Gluteus maximus, medius, minimus

A

They originate on the illium
They insert on the greater trochanter

Their job is abduction of the hip. They also prevent adduction of the hip. Medial rotation of the thigh. they’re also good for rotation of the hip joint

55
Q

Semitendinosus

A

They originate on the ischial tuberosity
They inserts on the medial surface of the proximal tibia

It’s job is for flexion at the knee

56
Q

Semimembranosus

A

It originates on the ischial tuberosity
It inserts on the medial surface of the proximal tibia

It’s job is for flexion at the knee

57
Q

Biceps femoris

A

It originates on the ischial tuberosity
Inserts on the lateral surface of the proximal tibia

It’s job is for flexion of the knee

58
Q

Adductors (medial compartment)

A

They originate on the pubis
They insert on the lateral fee moral shaft and posterior shaft of the femur and the medial epicondyle

It’s job is to adduct

59
Q

Gastrocnemius

A

It originates on the medial and the lateral epicondyles of the femur
Inserts on the accused tendon into the mid posterior calcaneus

It’s job is for plantar flexion of the foot and it also flexes the knee

60
Q

Soleus

A

It originates on the posterior tibia and Fibula
It inserts on the Achilles tendon into mid posterior calcaneus

It’s job is to plantar flex the foot, it also flexes the knee

61
Q

Flexor hallucis longus

A

It originates on the posterior tibia and fibula
It inserts on the phalanges

It’s action is to flex the toes

62
Q

Flexor digitorum longus

A

It originates on the posterior tibia and fibula
It inserts on the phalanges

It’s job is to flex the toes

63
Q

Tibialis posterior

A

It originates on the posterior tibia and fibula
Inserts on the phalanges

It’s job is to flex the toes

64
Q

Tibialis anterior

A

It originates on the anterior tibia and fibula
It inserts on the tarsals

It’s job is Dorsiflexion and some inversion

65
Q

Extensor digitorum longus

A

Originates on the tibia and fibula
Inserts on the base of the fifth metatarsal

It’s job is some Dorsiflexion and the extension of the toes

66
Q

Extensor hallucis longus

A

It originates on the anterior side of the tibia and the fibula
It inserts on the tarsals of the medial side

It’s a job is to flex the toes

Anatomy 109 (2 decks)

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