Foot OINA Flashcards

1
Q

Extensor Hallucis Longus

A

O: middle half of the anterior surface of the fibula and the interosseous membrane
I: base of the distal phalanx of the great toe
A: extends the metatarsophalangeal interphalangeal joints of the great toe; aids in DF
IN: deep fibular (peroneal) nerve

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2
Q

Extensor Hallucis Brevis

A

O: superolateral surface of the calcaneus
I: dorsum of base of proximal phalanx of the great toe
A: extends the great toe
IN: deep fibular (peroneal) nerve

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3
Q

Extensor Digitorum Longus

A

O: lateral condyle of the tibia, anterior surface of the fibula, lateral portion of the interosseous membrane
I: dorsum of the lateral 4 toes via extensor expansions (central slip inserts on base of middle phalanx, lateral slips on base of distal phalanx)
A: extends the metatarsophalangeal, proximal interphalangeal and distal interphalangeal joints of the lateral 4 toes; aids in DF
IN: deep fibular (peroneal) nerve

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4
Q

Flexor Hallucis Longus

A

O: lower 2/3 of the posterior surface of the fibula
I: base of the distal phalanx of the great toe
A: flexes the metatarsophalangeal and proximal interphalangeal joints of the great toe; plantar flexes the foot
IN: tibial nerve

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5
Q

Flexor Digitorum Longus

A

O: middle half of the posterior surface of the tibia
I: bases of the distal phalanges of digits 2-5
A: flexes the metatarsophalangeal, proximal interphalangeal and distal interphalangeal joints of digits 2-5; plantar flexes the foot
IN: tibial nerve

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6
Q

Flexor Digitorum Brevis

A

O: tuberosity of the calcaneus, plantar aponeurosis, intermuscular septae
I: base of the middle phalanx of digits 2-5 after splitting to allow passage of the flexor digitorum longus tendons
A: flexes the metatarsophalangeal and proximal interphalangeal joints of digits 2-5
IN: medial plantar nerve

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7
Q

Abductor Hallucis

A

O: medial side of the tuberosity of calcaneus
I: medial side of the base of the proximal phalanx of the great toe (hallux)
A: abducts the great toe; flexes the metatarsophalangeal joint
IN: medial plantar nerve

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8
Q

Abductor Digiti Minimi

A

O: medial and lateral sides of the tuberosity of the calcaneus
I: lateral side of the base of the proximal phalanx of the 5th digit
A: abducts the 5th toe; flexes the metatarsophalangeal joint
IN: lateral plantar nerve

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9
Q

Internal Intercostals

A

O: upper border of a rib
I: lower border of rib above, coursing up and medially
A: aids in exhalation by compressing ribs
IN: intercostal nerves (T1-T11)

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10
Q

External Intercostals

A

O: lower border of a rib within an intercostal space
I: upper border of the rib below coursing, downward and medially
A: aids in inhalation by raising ribs
IN: intercostal nerves (T1-T11)

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11
Q

Diaphragm

A

O: xiphoid process, costal margin, fascia over the quadratus lumborum and psoas major mm. (lateral and medial arcuate ligaments), vertebral bodies L1-L3
I: central tendon of the diaphragm
A: pushes the abdominal viscera inferiorly, increasing the volume of the thoracic cavity (inspiration)
IN: phrenic nerve (C3-C5)

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12
Q

Rectus Abdominus

A

O: pubis and the pubic symphysis
I: xiphoid process of the sternum and costal cartilages 5-7
A: flexes the trunk
IN: intercostal nerves 7-11 and subcostal nerve

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13
Q

Internal Oblique

A

O: thoracolumbar fascia, anterior 2/3 of the iliac crest, lateral 2/3 of the inguinal ligament
I: lower 3 or 4 ribs, linea alba, pubic crest
A: flexes and ipsilaterally bends the trunk, ipsilateral rotation
IN: intercostal nerves 7-11, subcostal, iliohypogastric and ilioinguinal nerves

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14
Q

External Oblique

A

O: lower 8 ribs
I: linea alba, pubic crest and tubercle, anterior superior iliac spine and anterior half of iliac crest
A: flexes and ipsilaterally bends the trunk; contralateral rotation
IN: intercostal nerves 7-11, subcostal, iliohypogastric and ilioinguinal nerves

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15
Q

Transversus Abdominus

A

O: lower 6 ribs, thoracolumbar fascia, anterior 3/4 of the iliac crest, lateral 1/3 of inguinal ligament
I: linea alba, pubic crest and pecten of the pubis
A: (flexes and laterally bends trunk) compresses viscera, supports abdominal tension; ipsilateral rotation
IN: intercostal nerves 7-11, subcostal, iliohypogastric and ilioinguinal nerves

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16
Q

Flexor Hallucis Brevis

A

O: cuboid, lateral cuneiform, medial side of the first metatarsal
I:
medial belly: medial side of proximal phalanx of the great toe
lateral belly: lateral side of the proximal phalanx of the great toe
A: flexes the metatarsophalangeal joints of the great toe
IN: medial plantar nerve (lateral belly occasionally receives innervation from the lateral plantar nerve)

17
Q

Adductor Hallucis

A

O:
Oblique: bases of metatarsals 2-4
Transverse: heads of metatarsals 3-5
I: lateral side of base of the proximal phalanx of the great toe
A: adducts the great to (moves it toward midline of the foot i.e. toward the 2nd digit
IN: deep branch of the lateral plantar nerve

18
Q

Flexor digiti minimi brevis

A

O: base of the 5th metatarsal bone
I: lateral side of base of proximal phalanx of 5th digit
A: flexes the metatarsophalangeal joint of the 5th digit
IN: lateral plantar nerve