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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
Brachioradialis
flexes forearm, role in supination, pronation of forearm ORIGIN: Lateral supracondylar ridge of humerus INSERTION: Lateral surface of distal end of radius
26
Triceps brachii
extends forearm and arm
27
Flexor carpi radialis
flex and abduct wrist
28
Flexor carpi ulnaris
flex and adduct wrist
29
Extensor digitorum
extend phalanges
30
Gluteus maximus
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
Tensor fasciae latae
flexes and abducts thigh
32
Quadriceps femoris
Rectus femoris -extend leg, flex thigh 1. Vastus lateralis -extend leg 2. Vastus medialis -extend leg 3. Vastus intermedius -extend leg
33
Hamstrings
Biceps femoris -flex leg, extend thigh i. Semitendinosus -flex leg, extend thigh ii. Semimembranosus -flex leg, extend thigh
34
Gracilis
adducts thigh, flex leg
35
Sartorius
longest muscle-flex leg, flex thigh, rotate thigh
36
Gastrocnemius
plantar flexion of foot (point toe), flex leg
37
Tibialis anterior
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
Triceps Brachi(long head)
ORIGIN: Infraglenoid tubercle of scapula INSERTION: Olecranon process of ulna via triceps brachii tendon.
39
Triceps Brachii(Lateral head)
ORIGIN: Part of posterior surface of humerus that lies superior to radial groove INSERTION: Olecranon process of ulna via triceps brachii tendon
40
Triceps Brachii(Medial head)
ORIGIN: Part of posterior surface of humerus that lies inferior to radial groove. INSERTION: Olecranon process of ulna via triceps brachii tendon
41
Biceps Brachii(long head)
ORIGIN: Supraglenoid tubercle of scapula INSERTION: Radial tuberosity; fascia of forearm via bicipital aponeurosis
42
Biceps Brachii(short head)
ORIGIN: Coracoid process of scapula INSERTION: Radial tuberosity; fascia of forearm via bicipital aponeurosis
43
Quadricep femoris(Vastus intermedius)
ORIGIN: Anterior & Lateral surface of the femur INSERTION: Tibial tuberosity via the patellar ligament
44
Quadricep femoris(Vastus medialis)
ORIGIN: Medial lip of the linea aspera of the femur and the intertrochanteric line INSERTION: The patella & tibial tuberosity via the patellar ligament
45
Quadricep femoris(Vastus lateralis)
ORIGIN: Greater trochanter of the femur; lateral lip of the linea aspera; the gluteal tuberosity INSERTION: Tibial tuberosity via the patella ligament
46
Quadricep femoris(Rectus Femoris)
ORIGIN: Anterior inferior iliac spine and the superior part of the acetablulum. INSERTION: Tibial tuberosity and the patella via Quadriceps tendon.
47
``` Bicep Femoris(HAMSTRINGS) ~SHORT HEAD ```
ORIGIN: Lateral lip of the lineal aspera of the femur INSERTION: Head of the fibula and lateral condyle of the tibia
48
``` Bicep Femoris(HAMSTRINGS) ~LONG HEAD ```
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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