Sole Muscled

Question 1

How many layers of muscles in the sole of foot?

Answer 1

4 layers

Question 2

Name the muscles in different layers of sole of foot?

Answer 2

1st layer
1.Abductor Hallucis
2.Flexor digitorum brevis
3.Abductor digiti minimi

2nd layer
1.Quadratus plantae
2.Lumbricals
Flexor digitorum longus tendon
Flexor hallucis longus (both extrinsic)

3rd layer
1.Flexor hallucis brevis
2.Adductor hallucis
3.Flexor digiti minimi brevis

4th layer
1.Interossei
-dorsal (4)
-plantar (3)
Fibularis longus tendon
Tibialis posterior tendon

Question 3

Origin and insertion of flexor digitorum brevis?

Answer 3

origin
Medial tubercle of calcaneum

Insertion
4 tendons - into middle phalanx of 4 lateral toes (so flexor digitorum longus pass through)

Question 4

Innervation of 1st layer of of soles muscles?

Answer 4

1st layer

Medial plantar nerve
Abductor Hallucis
Flexor digitorum brevis

Lateral plantar nerve
Abductor digiti minimi

Question 5

Origin and insertion of abductor hallucis?

Answer 5

Origin
Medial tuberosity of calcaneum and flexor retinaculum

Insertion
Base of proximal phalanx of big toe

Question 6

Origin and insertion of abductor digiti minimi?

Answer 6

origin
Medial and lateral tubercle of calcaneum

Insertion
Base of proximal phalanx of 5th toe

Question 7

Common origin of 1st layer of sole muscles?

Answer 7

Calcaneum

Question 8

Difference in action of 1st layer of sole muscles?

Answer 8

1st layer

Abductor Hallucis
- braces medial longitudinal arch

Flexor digitorum brevis
- braces medial & lateral longitudinal arch

Abductor digiti minimi
- braces lateral longitudinal arch

Question 9

The central muscle of the 3 of the 1st layer of sole muscle is?

Answer 9

Flexor digitorum brevis

Question 10

Name the intrinsic muscles of sole of in 2nd layer?

Answer 10

1. Quadratus plantae
2. Lumbricals (4)

Question 11

Origin and insertion of quadratus planatae?

Answer 11

origin
Medial and lateral tubercle of calcaneum

Insertion
Tendon of flexor digitorum longus

Question 12

Origin and insertion of lumbricals?

Answer 12

Origin
Tendon of flexor digitorum longus
(Like in In hands- lumbricals —- tendon of flexor digitorum profundus)

Insertion
Base of proximal phalannges of lateral 4 toes

Question 13

Lumbricals _______ from flexor digotorum longus and quadratus plantae _____ from it?

Answer 13

1. Originate
2. Insert

Question 14

Innervation of 2nd layer of muscles of sole?

Answer 14

2nd layer
Quadratus plantae
Lateral plantar nerve

Lumbricals
-1st — medial plantar nerve
-2nd — lateral plantar nerve

Question 15

Action of quadratus plantae?

Answer 15

Assist flexor digitorum longus in flexing the 4 toes

Question 16

Innervation of 3rd layer of sole muscles?

Answer 16

3rd layer

Medial plantar nerve
1.Flexor hallucis brevis

Lateral plantar nerve
2.Adductor hallucis (deep branch)
3.Flexor digiti minimi brevis

Question 17

Insertion of flexor hallucis brevis and adductor hallucis?

Answer 17

Flexor hallucis brevis:
Medial side of base of proximal phalanx of big toe

Adductor hallucis
Lateral side of base of proximal phalanx of big toe

Question 18

The interossei muscles are innervated by?

Answer 18

Lateral plantar nerve

Question 19

Action of dorsal and plantar interossei?

Answer 19

DAB
Dorsal - Abduct

PAD
Plantar - Adduct