Muscles

Question 1

Trapezius (Middle Division)

Answer 1

Origin: Spinous processes T1-T5
Insertion: Spine of scapula
Action: Elevates scapula

Question 2

Trapezius (Upper Division)

Answer 2

Origin: Occipital protuberance, superior nuchal line
Insertion: Lateral clavicle, acromion process
Action: Elevates, rotates scapula

Question 3

Trapezius (Lower Division)

Answer 3

Origin: Spinous process T6-T12
Insertion: spine of scapula
Action: Depress, retract scapula

Question 4

Deltoid (Middle)

Answer 4

Origin: Acromion process
Insertion: Deltoid tuberosity
Action: Abduction

Question 5

Deltoid (Anterior)

Answer 5

Origin: Lateral clavicle
Insertion: Deltoid tuberosity
Action: Abduction, horizontal flexion, medial rotation

Question 6

Deltoid (Posterior)

Answer 6

Origin: Spine of scapula
Insertion: Deltoid tuberosity
Action: Abduction, horizontal extension, lateral rotation

Question 7

Pectoralis Major (Sternal division)

Answer 7

Origin: Sternum to 7th rib
Insertion: Intertubercular sulcus, greater tubercle
Action: Adduction, medial rotation, horizontal flexion,

Question 8

Coracobrachialis

Answer 8

Origin: Coracoid process
Insertion: Middle of humerus
Action: Horizontal flexion, adduction

Question 9

Pectoralis Major (Clavicular division)

Answer 9

Origin: Mid clavicle
Insertion: Intertubercular sulcus, greater tubercle
Action: Shoulder and horizontal flexion, medial rotation

Question 10

Teres Major

Answer 10

Origin: Inferior angle
Insertion: Intertubercular sulcus of humerus
Action: Medially rotates humerus, shoulder extension

Question 11

Latissimus Dorsi

Answer 11

Origin: Spinous processes of T6-L5, sacrum, ilium
Insertion: Intertubercular sulcus
Action: Extension, Medially rotates humerus

Question 12

Infraspinatus

Answer 12

Origin: Infraspinous fossa of scapula
Insertion: Greater tubercle
Action: Lateral rotation of humerus

Question 13

Supraspinatus

Answer 13

Origin: Supraspinous fossa
Insertion: Greater tubercle
Action: Abduction of humerus

Question 14

Subscapularis

Answer 14

Origin: subscapular fossa
Insertion: Lesser tubercle
Action: Medial rotation of humerus

Question 15

Teres Minor

Answer 15

Origin: Lateral border of scapula
Insertion: Greater tubercle
Action: Lateral rotation of humerus

Question 16

Triceps Brachii

Answer 16

Origin: Infraglenoid tubercle, lateral surface of humerus, posterior surface of humerus
Insertion: olecranon process of ulan
Action: forearm extension

Question 17

Biceps Brachii

Answer 17

Origin: Supraglenoid tubercle, coracoid process
Insertion: Radial tuberosity
Action: Supinates, flexes forearm

Question 18

Sternocleidomastoid

Answer 18

Origin: manubrium, clavicle
Insertion: Mastoid process, superior nuchal line
Action: Flexes neck, rotates head

Question 19

Gluteus Medius

Answer 19

Origin: Iliac crest
Insertion: Greater trochanter
Action: Abducts femur, meidal rotation

Question 20

Gluteus Maximus

Answer 20

Origin: ilium, sacrum, coccyx
Insertion: Gluteal tuberosity of femur
Action: Thigh extension, Abduction, lateral rotation of hip

Question 21

Gluteus Minimus

Answer 21

Origin: ilium,
Insertion: Greater trochanter
Action: Abducts femur, medially rotates

Question 22

Gracilis

Answer 22

Origin: symphysis pubis
Insertion: Anterior medial shaft of tibia
Action: Adducts, medially rotates thigh, knee flexion

Question 23

Sartorius

Answer 23

Origin: Anterior superior iliac spine
Insertion: Shaft of tibia
Action: Flexes, abducts, laterally rotates thigh

Question 24

Semitendinosus

Answer 24

Origin: Ischial tuberosity
Insertion: meidal condyle of tibia
Action: knee flexes, medially rotates, adducts

Question 25

Biceps Femoris

Answer 25

Origin: Ischial tuberosity, Linea aspera Insertion: Head of fibula, lateral condyle of tibia Action: Flexion, lateral rotation at knee, hip extension, adduct

Question 26

Rectus Femoris

Answer 26

Origin: iliac spine, acetabulum Insertion: Patella to tibial tuberosity Action: knee extension, hip flexion

Question 27

Semimembranosus

Answer 27

Origin: ischial tuberosity Insertion: medial condyle of tibia Action: Knee flexes, medially rotates leg at knee, extends, adducts

Question 28

Vastus Medialis

Answer 28

Origin: linea aspera Insertion: Patella, tibial tuberosity Action: Extend leg at knee

Question 29

Vastus Lateralis

Answer 29

Origin: Greater trochanter, linea aspera Insertion: Patella to tibial tuberosity Action: Knee extension

Question 30

Vastus Intermedius

Answer 30

Origin: linea aspera Insertion: Patella to tibial tuberosity Action: Extend leg at knee

Question 31

Soleus

Answer 31

Origin: Head fibula Insertion: Calcaneus by achilles tendon Action: Plantar flexion, inversion

Question 32

Gastrocnemuis

Answer 32

Origin: Lateral condyle, medial condyle of femur Insertion: calcaneus by achillies Action: Plantar flexion, inversion