Foot

Question 1

Dorsal muscles

Answer 1

Extensor digitorum brevis
Extensor hallucis brevis

Innervated by the deep fibular nerve

Question 2

Extensor digitorum brevis

Origin

Answer 2

Calcaneum
Inferior extensor retinaculum
Interosseous talocalcaneal ligament

Question 3

Extensor digitorum brevis

Insertion

Answer 3

Long extensor tendons of the lateral four digits

Question 4

Extensor digitorum brevis

Innervation

Answer 4

Deep fibular nerve

Question 5

Extensor digitorum brevis

Function

Answer 5

Extends digits at the MTP joints and IP joints

AIDS extensor digitorum longus

Question 6

Extensor hallucis brevis

Origin

Answer 6

Calcaneum
Inferior extensor retinaculum
Interosseous talocalcaneal ligament

Question 7

Extensor hallucis brevis

Insertion

Answer 7

Base of proximal phalanx of the great toe

Question 8

Extensor hallicus brevis

Innervation

Answer 8

Deep fibular nerve

Question 9

Extensor hallicus brevis

Function

Answer 9

Extends great toe at MTP joint

AIDS extensor hallucis longus

Question 10

Plantar

Layers

Answer 10

1st layer
2nd layer
3rd layer
4th layer

10 intrinsic muscles divided into 4 layers
Innervated by the medial plantar nerve or the lateral plantar nerve (branches of the tibial nerve)
All originate from the calcaneus and the plantar aponeurosis

Question 11

Plantar 1st layer

Muscles

Answer 11

Abductor hallucis
Flexor digitorum brevis
Abductor digiti minimi

Question 12

Abductor hallucis

Origin

Answer 12

Medial tubercle of the calcaneus

Question 13

Abductor hallucis

Insertion

Answer 13

Medial base of the proximal phalanx of the great toe

Question 14

Abductor hallucis

Innervation

Answer 14

Medial plantar nerve

Question 15

Abductor hallucis

Function

Answer 15

Abducts and flexes the great toe

Question 16

Flexor digitorum brevis

Origin

Answer 16

Medial tubercle of the calcaneus

Question 17

Flexor digitorum brevis

Insertion

Answer 17

Middle phalanges of the lateral four digits

Question 18

Flexor digitorum brevis

Innervation

Answer 18

Medial plantar nerve

Question 19

Flexor digitorum brevis

Function

Answer 19

Flexes lateral four digits at PIP joints

Question 20

Abductor digiti minimi

Origin

Answer 20

Medial and lateral tubercle of the calcaneus

Question 21

Abductor digiti minimi

Insertion

Answer 21

Lateral base of the proximal phalanx of the 5th digit

Question 22

Abductor digiti minimi

Innervation

Answer 22

Lateral plantar nerve

Question 23

Abductor digiti minimi

Function

Answer 23

Abducts and flexes 5th digit

Question 24

Plantar 2nd layer

Muscles

Answer 24

Quadratus plantae

Lumbricals (x4)

Question 25

Quadratus plantae | Origin

Answer 25

Medial and lateral surface of the calcaneus

Question 26

Quadratus plantae | Insertion

Answer 26

Tendons of flexor digitorum longus

Question 27

Quadratus plantae | Innervation

Answer 27

Lateral plantar nerve

Question 28

Quadratus plantae | Function

Answer 28

Flexes lateral 4 digits | AIDS flexor digitorum longus

Question 29

2nd layer | Number of lumbricals

Answer 29

4

Question 30

Lumbricals | Origin

Answer 30

Tendons of flexor digitorum longus

Question 31

Lumbricals | Insertion

Answer 31

Extensor hoods of lateral 4 digits

Question 32

Lumbricals | Innervation

Answer 32

Lateral plantar nerve | Except for most medial lumbrical = medial plantar nerve

Question 33

Lumbricals | Function

Answer 33

Flexes at the MTP joins | Extends at the IP joints

Question 34

Plantar 3rd layer | Muscles

Answer 34

Flexor hallucis brevis Adductor hallucis Flexor digiti minimi brevis

Question 35

Flexor hallucis brevis | Origin

Answer 35

Plantar surfaces of the cuboid | Tendon of the tibialis posterior

Question 36

Flexor hallucis brevis | Insertion

Answer 36

Base of the proximal phalanx of the great toe

Question 37

Flexor hallucis brevis | Innervation

Answer 37

Medial plantar nerve

Question 38

Flexor hallucis brevis | Function

Answer 38

Flexes great toe at MTP joint

Question 39

Adductor hallucis | Origin

Answer 39

Oblique head = base of 2/3/4th metatarsals | Transverse head = plantar ligaments of MTP joints

Question 40

Adductor hallucis | Insertion

Answer 40

Lateral base of the proximal phalanx of the great toe

Question 41

Adductor hallucis | Innervation

Answer 41

Deep branch of the lateral plantar nerve

Question 42

Adductor hallucis | Innervation

Answer 42

Deep branch of the lateral plantar nerve

Question 43

Adductor hallucis | Function

Answer 43

Adducts the great toe | Forms the transverse arch of the foot

Question 44

Flexor digiti minimi brevis | Origin

Answer 44

Base of 5th metatarsal

Question 45

Flexor digiti minimi brevis | Insertion

Answer 45

Base of proximal phalanx of the 5th digit

Question 46

Flexor digiti minimi brevis | Innervation

Answer 46

Superficial branch of the lateral plantar nerve

Question 47

Flexor digiti minimi brevis | Function

Answer 47

Flexes proximal phalanx of the 5th digit

Question 48

Plantar 4th layer | Muscles

Answer 48

``` Plantar interossei (x3) Dorsal interossei (x4) ```

Question 49

Number of plantar interossei

Answer 49

3

Question 50

Number of dorsal interossei

Answer 50

4

Question 51

Plantar interossei | Origin

Answer 51

Medial side of metatarsals 3-5

Question 52

Plantar interossei | Insertion

Answer 52

Medial side of phalanges 3-5

Question 53

Plantar interossei | Innervation

Answer 53

Lateral plantar nerve

Question 54

Plantar interossei | Function

Answer 54

Adducts digits 3-5 | Flexes MTP joints

Question 55

Dorsal interossei | Origin

Answer 55

Sides of metatarsals 1-5

Question 56

Dorsal interossei | Insertion

Answer 56

Lateral sides of proximal phalanges 2-4

Question 57

Dorsal interossei | Innervation

Answer 57

Lateral plantar nerve

Question 58

Dorsal interossei | Function

Answer 58

Abducts digits 2-4 | Flexes MTP joints