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Bio40a > Muscles to know > Flashcards

Muscles to know Flashcards

1
Q

Frontalis

A

draws scalp forward, raise eyebrows, wrinkle forehead
ORIGIN: Epicranial aponeurosis
INSERTION: Skin of the eyebrow and the forehead

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2
Q

Occipitalis

A

draws scalp backward
ORIGIN: Superior nuchal line of occipital bone
INSERTION: Epicranial aponeurosis

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3
Q

Orbicularis oris

A

moves lips
ORIGIN: anteromedial surface of maxilla; anteromedial of mandible
INSERTION: Skin and Fascia of the lips

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4
Q

Zygomaticus major

A

draws angle of mouth up = smile

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5
Q

Buccinator

A

compresses cheek, cave in, like sucking straw

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6
Q

Orbicularis oculi

A

closes the eye

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7
Q

Masseter

A

elevates mandible
ORIGIN: Zygomatic arch
INSERTION: Angle and Ramus of Mandible

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8
Q

Temporalis

A

elevates and retracts mandible

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9
Q

Sternocleidomastoid

A

flex cervical vertebrae, rotates face to side
ORIGIN: Sternal head; anterior surface of manubrium; Clavicular head
INSERTION: Mastoid process & lateral part of superior nuchal line

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10
Q

Rectus abdominis

A

compresses abdomen, flexes lumbar vertebrae

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11
Q

External oblique

A

both -compress abdomen

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12
Q

Diaphragm

A

floor of thoracic cavity, contracts for inhalation

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13
Q

Internal intercostals

A

draws adjacent ribs together during forced exhalation

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14
Q

External intercostals

A

elevates ribs during inhalation

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15
Q

Pectoralis major

A

flex, adduct and rotate arm medially
ORIGIN: Medial half of clavicle; anterior surface of manubrium of sternum; costal cartilages
INSERTION: Lateral lip of intertubercular sulcus of humerus

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16
Q

Serratus anterior

A

rotates scapula upward and laterally, elevates ribs

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17
Q

Trapezius

A

elevates clavicle, adducts scapula

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18
Q

Levator scapulae

A

elevates scapula and rotates slightly downward

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19
Q

Rhomboideus major

A

adducts scapula and rotates slightly downward

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20
Q

Latissimus dorsi

A

extend, adduct and rotate arm medially
ORIGIN: Inferior angle of Scapula
INSERTION: Intertubercular sulcus of humerus

21
Q

Deltoid

A

abducts, flexes, extends, medially and laterally rotates arm
ORIGIN: Acromion
INSERTION: Deltoid tuberosity of Humerus

22
Q

Teres major

A

extends arm, assists in adduction

23
Q

Teres minor

A

rotates arm laterally, extends and adducts arm

24
Q

Biceps brachii

A

flexes and supinates the forearm, flexes the arm

25
Q

Brachioradialis

A

flexes forearm, role in supination, pronation of forearm
ORIGIN: Lateral supracondylar ridge of humerus
INSERTION: Lateral surface of distal end of radius

26
Q

Triceps brachii

A

extends forearm and arm

27
Q

Flexor carpi radialis

A

flex and abduct wrist

28
Q

Flexor carpi ulnaris

A

flex and adduct wrist

29
Q

Extensor digitorum

A

extend phalanges

30
Q

Gluteus maximus

A

extends, rotates thigh laterally
ORIGIN: Fascia of the gluteus medius; external surface of ilium behind the posterior gluteal line.
INSERTION: Upper fibers; the posterior part of the iliotibial tract and the fasciae latae muscles

31
Q

Tensor fasciae latae

A

flexes and abducts thigh

32
Q

Quadriceps femoris

A

Rectus femoris -extend leg, flex thigh

  1. Vastus lateralis -extend leg
  2. Vastus medialis -extend leg
  3. Vastus intermedius -extend leg
33
Q

Hamstrings

A

Biceps femoris -flex leg, extend thigh

i. Semitendinosus -flex leg, extend thigh
ii. Semimembranosus -flex leg, extend thigh

34
Q

Gracilis

A

adducts thigh, flex leg

35
Q

Sartorius

A

longest muscle-flex leg, flex thigh, rotate thigh

36
Q

Gastrocnemius

A

plantar flexion of foot (point toe), flex leg

37
Q

Tibialis anterior

A

dorsiflexes, inverts foot
ORIGIN: Lateral proximal tibia; tibial condyle; interosseous membrane; the superficial crural fascia
INSERTION: Medial surface of the medial cuneiform bone and the 1st metatarsal bone.

38
Q

Triceps Brachi(long head)

A

ORIGIN: Infraglenoid tubercle of scapula
INSERTION: Olecranon process of ulna via triceps brachii tendon.

39
Q

Triceps Brachii(Lateral head)

A

ORIGIN: Part of posterior surface of humerus that lies superior to radial groove
INSERTION: Olecranon process of ulna via triceps brachii tendon

40
Q

Triceps Brachii(Medial head)

A

ORIGIN: Part of posterior surface of humerus that lies inferior to radial groove.
INSERTION: Olecranon process of ulna via triceps brachii tendon

41
Q

Biceps Brachii(long head)

A

ORIGIN: Supraglenoid tubercle of scapula
INSERTION: Radial tuberosity; fascia of forearm via bicipital aponeurosis

42
Q

Biceps Brachii(short head)

A

ORIGIN: Coracoid process of scapula
INSERTION: Radial tuberosity; fascia of forearm via bicipital aponeurosis

43
Q

Quadricep femoris(Vastus intermedius)

A

ORIGIN: Anterior & Lateral surface of the femur
INSERTION: Tibial tuberosity via the patellar ligament

44
Q

Quadricep femoris(Vastus medialis)

A

ORIGIN: Medial lip of the linea aspera of the femur and the intertrochanteric line
INSERTION: The patella & tibial tuberosity via the patellar ligament

45
Q

Quadricep femoris(Vastus lateralis)

A

ORIGIN: Greater trochanter of the femur; lateral lip of the linea aspera; the gluteal tuberosity
INSERTION: Tibial tuberosity via the patella ligament

46
Q

Quadricep femoris(Rectus Femoris)

A

ORIGIN: Anterior inferior iliac spine and the superior part of the acetablulum.
INSERTION: Tibial tuberosity and the patella via Quadriceps tendon.

47
Q 
Bicep Femoris(HAMSTRINGS)
~SHORT HEAD
A

ORIGIN: Lateral lip of the lineal aspera of the femur
INSERTION: Head of the fibula and lateral condyle of the tibia

48
Q 
Bicep Femoris(HAMSTRINGS)
~LONG HEAD
A

ORIGIN: Ischial tuberosity and the sacrotuberous ligament
INSERTION: Head of the fibula and lateral condyle of the tibia

Bio40a (11 decks)

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