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Anatomy Lab > Muscles: Origins, Insertions and Actions > Flashcards

Muscles: Origins, Insertions and Actions Flashcards

1
Q

Temporalis

A

Origin: temporal bone
Insertion: coronoid process of the mandible
Action: raises the mandible

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2
Q

Masseter

A

Origin: zygomatic bone
Insertion: angle and ramus of the mandible
Action: raises the mandible

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3
Q

Sternocleidomastoid

A

Origin: manubrium of sternum and medial portion of the clavicle
Insertion: mastoid process of the temporal bone
Action: flexes the cervical vertebral column

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4
Q

Trapezius

A

Origin: occipital bone and ligamentum nuchae
Insertion: clavicle; acromion and spine of scapula
Action: rotates, adducts, and stabilizes the scapula

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5
Q

Levator Scapulae

A

Origin: transverse process of upper cervical vertebrae
Insertion: vertebral border of the scapula
Action: elevates the scapula

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6
Q

Pectoralis Major

A

Origin: medial half of the clavicle and the sternum
Insertion: intertubercular groove of humerus
Action: flexes, adducts, and medially rotates the arm

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7
Q

Latissimus Dorsi

A

Origin: spinous processes of lower thoracic vertebrae
Insertion: intertubercular roof of humerus
Action: extends, adducts, and medially rotates arm

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8
Q

Deltoid

A

Origin: clavicle; acromion and spine of scapula
Insertion: deltoid tuberosity of the humerus
Action: abducts the arm

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9
Q

Supraspinatus

A

Origin: supraspinatus fossa of the scapula
Insertion: greater tubercle of the humerus
Action: abducts the arm

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10
Q

Infraspinatus

A

Origin: infraspinatus fossa of the scapula
Insertion: greater tubercle of the humerus
Action: rotates the arm laterally

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11
Q

Subscapularis

A

Origin: subscapular fossa of the scapula
Insertion: lesser tubercle of the humerus
Action: rotates the arm medially

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12
Q

Subscapularis

A

Origin: subscapular fossa of the scapula
Insertion: lesser tubercle of the humerus
Action: rotates the arm medially

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13
Q

Biceps Brachii

A

Origin: coracoid process of the scapula
Insertion: radial tuberosity of the radius
Action: flexes the forearm and arm; supination of forearm

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14
Q

Triceps Brachii (long, lateral, and medial heads)

A

Origin: infraglenoid tubercle of scapula and post surface of humerus
Insertion: olecranon process of the ulna
Action: extends forearm

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15
Q

Flexor Carpi Radialis

A

Origin: medial epicondyle of the humerus
Insertion: 2nd and 3rd metacarpals
Action: flexes hand

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16
Q

Extensor Carpi Ulnaris

A

Origin: lateral epicondyle of the humerus
Insertion: 5th metacarpal
Action: extends hand

17
Q

Extensor Carpi Radialis Longus

A

Origin: supracondylar ridge of the humerus
Insertion: 2nd metacarpal
Action: extends hand

18
Q

Gluteus Maximus

A

Origin: gluteal line of the ilium
Insertion: gluteal tuberosity of the femur
Action: extends and laterally rotates thigh

19
Q

Iliacus

A

Origin: iliac crest
Insertion: lesser trochanter of the femur
Action: flexes thigh

20
Q

Psoas Major

A

Origin: transverse processes of the lumbar vertebrae
Insertion: lesser trochanter of the femur
Action: flexes thigh

21
Q

Adductor Magnus

A

Origin: inferior ramus of the pubis and ischium
Insertion: linea aspera of the femur
Action: adducts the thigh

22
Q

Gracilis

A

Origin: pubic symphysis
Insertion: medial surface of the tibia
Action: adducts thigh

23
Q

Sartorius

A

Origin: anterior superior iliac spine
Insertion: medial surface of the tibia
Action: flexes the thigh and leg

24
Q

Rectus Femoris

A

Origin: anterior inferior iliac spine
Insertion: tibial tuberosity of the tibia
Action: flexes the thigh and extends the leg

25
Q

Vastus Lateralis

A

Origin: greater trochanter of the femur
Insertion: tibial tuberosity of the tibia
Action: extends leg

26
Q

Vastus Lateralis

A

Origin: greater trochanter of the femur
Insertion: tibial tuberosity of the tibia
Action: extends leg

27
Q

Biceps Femoris

A

Origin: ischial tuberosity and linea aspera of the femur
Insertion: head of the fibula and lateral condyle of the tibia
Action: flexes leg and extends thigh

28
Q

Semimembranosis

A

Origin: ischial tuberosity
Insertion: proximal end of the tibia
Action: flexes leg and extends thigh

29
Q

Tibialis Anterior

A

Origin: lateral condyle of the tibia
Insertion: 1st metatarsal
Action: dorsiflexes and inverts the foot

30
Q

Gastrocnemius

A

Origin: medial and lateral condyles of the femur
Insertion: calcaneus bone
Action: plantar flexes and inverts foot

Anatomy Lab (1 decks)

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