Muscles

Question 1

what is the innervation, action, origin, and insertion

Answer 1

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Question 2

Name muscle, origin, insertion, action, innervation

Answer 2

Sartorius

Origin - ASIS

Insertion - Medial surface of body of tibia

Action - weakly flexes leg at knee joint, flexes abducts, and laterally rotates thigh at hip joint

Innervation - Femoral nerve

Question 3

Origin, insertion, action, innervation

Answer 3

Rectus Femoris

Origin - ASIS

Insertion - patella via quadriceps tendon and then tibial tuberosity via patellar ligament

Action - extend leg at knee joint.

innervation - femoral nerve

Question 4

Origin, insertion, action, innervation

Answer 4

Vastus lateralis

Origin - Greater trochanter and linea aspera of femur

Insertion - patella via quads tendon and then tibial tuberosity

Action - Extend leg at knee joint

Innervation - Femoral nerve

Question 5

Origin, insertion, action, innervation

Answer 5

Vastus Intermedius

Origin - Anterior and lateral surfaces of body of femur

Insertion - Patella and then tibial tuberosity

Action - Extend leg at knee joint

Innervation - Femoral nerve

Question 6

Origin, insertion, action, innervation

Answer 6

Vastus Medialis

Origin - Linea aspera of femur

Insertion - Patella then tibial tuberosity

Action - extend leg at knee joint

Innervation - femoral nerve

Question 7

Origin, insertion, action, innervation

Answer 7

Biceps Femoris

Origin - Long head, ischial tuberosity short head, linea aspera of femur

Insertion - Head of fibula and lateral condyle of tibia

Action - flexes leg at knee joint and extends thigh at hip joint

Innervation - Sciatic nerve

Question 8

Origin, insertion, action, innervation

Answer 8

Semimembranosus

origin - ischial tuberosity

Insertion - Medial condyle of tibia

Action - flexes leg at knee joint and extends thigh at hip joint

Innervation - sciatic nerve

Question 9

Origin, insertion, action, innervation

Answer 9

Semitendinosus

Origin - ischial tuberosity

Insertion - Prosimal part of medial surface of shaft of tibia

Action - Flexes leg at knee joint and extends thigh at hip joint

Innervation - Tibial nerve from sciatic nerve

Question 10

Origin, insertion, action, innervation

Answer 10

Gastrocnemius

Origin - Lateral and medial condyles of femur and capsule of knee

Insertion - calcaneus

Action - plantar flexes foot at ankle joint and flexes leg at knee joint

Innervation - tibial nerve

Question 11

Origin, insertion, action, innervation

Answer 11

Plantaris

Origin - lateral epicondyle of femur

Insertion - calcaneus

Action - plantar flexes foot at ankle joint and flexes leg at knee joint

Innervation - tibial nerve

Question 12

Origin, insertion, action, innervation

Answer 12

Soleus

Origin - -Head of fibula and medial border of tibia

Insertion - calcaneus

Action - Plantar flexes foot at ankle joint

Innervation - tibial nerve

Question 13

Origin, insertion, action, innervation

Answer 13

Tibialis Posterior

Origin - Prosimal tibia, fibula, and interosseous membrane

Insertion - 2, 3, and 4th metatarsals, navicular, and all three cuneiforms

Action - Plantar flexes foot at ankle joint and inverts foot at intertarsal joints

innervation - tibial nerve

Question 14

Origin, insertion, action, innervation

Answer 14

Flexor digitorum longus

Origin - middle third of posterior surface of tibia

Insertion - distal phalanges of toes 2-5

Action - plantar flexes foot at ankle, flexes distal and middle proximal phalanx of toes .

innervation - tibial nerve

Question 15

Origin, insertion, action, innervation

Answer 15

Flexor Hallucis Longus

Origin - Inferior two-thirds of posterior portion of fibula

Insertion - distal phalanx of great toe

Action - Plantar flexes foot at ankle, flexes distal phalanx of great to and proximal phalanx of great toe

innervation - tibial nerve

Question 16

Origin, insertion, action, innervation

Answer 16

Fibularis Longus

Origin - head and body of fibula

Insertion - first metatarsal and first cuneiform

action - plantar flexes foot at ankle and pronates foot at intertarsal joints

innervation - superficial fibular nerve

Question 17

Origin, insertion, action, innervation

Answer 17

Fibularis brevis

Origin - Distal half of body of fibula

Insertion - Base of fifth metatarsal

action - plantar flexes foot at ankle and pronates foot

innervation - superficial fibular nerve

Question 18

Origin, insertion, action, innervation

Answer 18

Tibialis anterior

Origin - Lateral condyle and body of tibia, interosseous membrane

Insertion - 1st metatarsal and 1st cuneiform

Action - dorsiflexes foot at ankle and supinates foot

Innervation - deep fibular nerve

Question 19

Origin, insertion, action, innervation

Answer 19

Extensor Hallucis Longus

Origin - Anterior surface of fibula and interosseous membrane

Insertion - Distal phalanx of great toe

Action - dorsiflexes foot at ankle, extends prosimal phalanx of great toe

Innervation - deep fibular nerve

Question 20

Origin, insertion, action, innervation

Answer 20

Extensor Digitorum Longus

Origin - Lateral condyle of tibia, anterior surface of fibula

Insertion - middle and distal phalanges of toes 2-5

Action - Dorsiflexes foot, extends phalanges of each to.

Innervation - Deep fibular nerve

Question 21

Origin, insertion, action, innervation

Answer 21

Fibularis Tertius

Origin - Distal third of fibula and interosseous membrane

Insertion - Base of fifth metatarsal

Action - dorsiflexes foot at ankle, and pronates foot

Innervation - Deep fibular nerve