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BIO223 > Muscles > Flashcards

Muscles Flashcards

1
Q

Orbicularis Oculi

A

Origin- frontal and maxillary
Insertion- Eyelid Tissue
Action- blinking and Squinting

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2
Q

Orbicularis Oris

A

Origin- maxilla and Mandible
Insertions- Muscles and skin at angles of mouth
Actions- Close lips, kissing, and whistling

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3
Q

Zygomaticus

A

Origin- Zygomatic Bone
Insertions-muscles and skin at corners of mouth
Action- smiling and laughing

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4
Q

Buccunator

A

Origin-Maxilla and Mandible
Insertions- Orbicularis Oris
Action- compress cheek, sucking

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5
Q

Platysma

A

Origin-Fascia of the chest
Insertions- Mandible and skin/ muscle of the mouth
Actions- depresses mandible/ tenses skin of neck during shaving

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6
Q

Masseter

A

Origin- zygomatic and maxilla bone
Insertions-mandible
Actions-
Closes jaw and elevates mandible

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7
Q

Temporalis

A

Origin-Temporal bone
Insertion- mandible
Actions- closes jaw and elevates/retracts mandible

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8
Q

Sternocleidomastoid

A

Origin- sternum and clavicle
Insertion- Temporal and occipital
Actions- rotate head toward opposite shoulder and neck flexion when both muscles contract

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9
Q

Pectoralis Major

A

Origin- sternum, clavicle, ribs, external oblique muscle
Insertion- humerus
Action- arm flexion and forced inspiration

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10
Q

Pectoralis minor

A

Origin- ribs
Insertions- scapula
Actions- pulls scapula forward and i ferior

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11
Q

Serratus anterior

A

Origin- ribs
Insertions- scapula
Actions- Abduction and raising of arm

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12
Q

Deltoid

A

Origins- clavicle and scapula
Insertions- humerus
Actions- abduction of humerus

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13
Q

External intercostals

A

Origins- inferior border of ribs
Insertions- superior border of ribs
Actions- elevates ribs and aids in inspiration

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14
Q

Internal intercostals

A

Origin- superior border of ribs
Insertions- inferior border of ribs
Actions-lowers ribs, aids in forced expiration

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15
Q

External Oblique

A

Origin- ribs
Insertions-linea alba, pubic crest, ilium
Actions- flexes and rotates vertebral column

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16
Q

Rectus abdominus

A

Origins- pubic bone
Insertions- sternum-xiphoid proves and ribs
Action- flexes and rotates vertebral column

17
Q

Latissimus Dorsi

A

Origin- thoracic and lumbar vertebrae, ribs and ilium
Insertion- humerus
Action- arm extension adduction and medial rotation of arm

18
Q

Trapezius

A

Origin- occipital bone, cervical and thoracic vertebrae
Insertions- scapula and clavicle
Actions- extends head, shrugs shoulders

19
Q

Coracobrachialis

A

Origin- scapula
Insertions- humerus
Actions- flexes and adducts humerus

20
Q

Biceps Brachii

A

Origin- scapula
Insertions- radius- radial tuberosity
Actions- flexes elbow joint, antagonist of forearm extension

21
Q

Brachialis

A

Origin-humerus
Insertions-ulna
Actions- flexes elbow joint

22
Q

Brachioradialis

A

Origin- humerus
Insertion- radius- styloid process
Actions- flexes elbow joint

23
Q

Triceps brachii

A

Origin- scapula and humerus
Insertions- ulna- olecranon process
Actions- extension at elbow joint, antagonist of forearm flexion

24
Q

Supinator

A

Origin- humerus and ulna
Insertions- radius
Actions- supinate the foearm

25
Q

Pronator teres

A

Origin- humerus and ulna
Insertions- radius
Actions- pronates the forearm

26
Q

Sartorius

A

Origin- ilium- iliac spine
Insertion- tibia
Action- flex, abduct and laterally rotate thigh. Helps with cross-legged position

27
Q

Rectus femoris

A

Origin- Ilium-iliac spine and acetabulum
Insertion- patella and tibia- tibial tuberosity
Action- extends knee and flexes thigh at the hip

28
Q

Vastus lateralis

A

Origin- femur
Insertion- patella and tibia- tibial tuberosity
Action- extends knee

29
Q

Vastus medialis

A

Origin- femur
Insertion- patella and tibia- tibial tuberosity
Action- extends knee

30
Q

Vastus intermedius

A

Origin- femur
Insertion- patella and tibia- tibial tuberosity
Action- extends knee

31
Q

Tensor fasciae latae

A

Origin- ilium-crest and spine
Insertion- tibia
Actions- flex, abduct and medially rotate thigh

32
Q

Gluteus maximus

A

Origin- ilium, sacrum, coccyx
Insertion- femur
Action- extends thigh ( climbing stairs)

33
Q

Gluteus medius

A

Origin- ilium
Insertion- femur - greater trochanter
Actions- abducts and medially rotates thigh( important in walking)

34
Q

Bicep femoris

A

Origin- femur snd ischium
Insertion- tibia and fibula
Actions- extends thigh and flexes knee

35
Q

Semitendinosus

A

Origin- ischium- ischial tuberosity
Insertion-tibia
Action- extends thigh and flexes knee

36
Q

Semimembranosous

A

Origin- ischium-ischial tuberosity
Insertion- femur and tibia
Action-extends thigh and flexes knee

37
Q

Tibialis anterior

A

Origin- tibia
Insertion- tarsal and metatarsal
Action- dorsiflexion

38
Q

Gastrocnemius

A

Origin-femur
Insertion- calcaneus
Action- plantar flexion

39
Q

Soleus

A

Origin- tibia and fibula
Insertion- calcaneus
Action- plantar flexion

BIO223 (13 decks)

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