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ANAT 315 (: > 14. Intrinsic Foot > Flashcards

14. Intrinsic Foot Flashcards

1
Q

Explain adduction and abduction of your toes.

A

Adduction: torwards midline

abduction: away from midline
midline: midline of 2nd digit

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2
Q

Identify this muscle. (blue)

A

EXTENSOR DIGITORUM BREVIS

(3 muscle bellies)

ori: dorsal aspect of calcaneus
ins: base of 2-4 middle phalanges
inn: deep fibular n
act: extend 2-4 digits

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3
Q

Identify the muscle in green.

A

EXTENSOR HALLUCIS BREVIS

ori: dorsal aspect of calcaneus
ins: base of 1st proximal phalanx
inn: deep fibular n
act: extend big toe

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4
Q

With who does the deep fibular n run w?

A

deep fibular n runs w anterior tibial a

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5
Q

Explain the blood flow in the foot. (dorsal)

A
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6
Q

Explain the innervation of the leg down to the foot. (dorsal)

A
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7
Q

Explain the dorsal dermatomes of foot and leg.

A
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8
Q

What is this structure?

A

Plantar aponeurosis:

top part: superficial transver metatarsal ligaments

bottom: transver fasicles

main support of longitudinal arch

stops skin from moving too much

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9
Q

What is plantar fasciitis?

A

inflammed or torn plantar aponeurosis (near heel) due to overwork of muscle near heel

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10
Q

Identify the muscle in blue.

A

FLEXOR DIGITORUM BREVIS(plantar: 1st layer)

ori: calcaneol tuberosity
ins: base of 2-5 middle phalanges
inn: medial plantar n

act; flex distal interphalangeal joints

(snake tongue: outside: brevis, tongue: longus)

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11
Q

What is the muscle in orange

A

ABDUCTOR HALLUCIS (plantar:1st layer)

ori: calcaneal tuberosity
ins: base of 1stproximal phalanx
inn: medial plantar n

act;abduct bigtoe

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12
Q

Identify the muscle in green

A

ABDUCTOR DIGIT MINIMI (plantar:1st layer)

ori: calcaneal tuberosity
ins: base of 5th metatarsal and base of 5th proximal phalanx
inn: lateral plantar n

act; abduct pinky toe

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13
Q

Identify the muscle in blue and purple.

A

purple: flexor digitorum longus
blue: QUADRATUR PLANTAE (plantar: 2nd layer)
ori: calcaneal tuberosity
ins: tendon of flexor digitorum longus
inn: lateral plantar

act;flex toes, maintain arch

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14
Q

Identify the muscle in orange and green.

A

LUMBRICALS (plantar: 2nd layer)

(4)

ori: tendon of flexor digitorum longus
ins: extensor expansions 2-5 digits
inn: green: lateral plantar, orange: medial plantar

act; extend at IPJ and flex and metatarsophalangeal joints

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15
Q

Identify the muscle in blue

A

FLEXOR HALLUCIS BREVIS (plantar: 3rd layer)

on sesamoid bones

medial and lateral heads

ori: cuboid, lateral cuneiforms
ins: base of 1 proximal phalanx
inn: medial & lateral plantar n
act: flex toe

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16
Q

identify the muscle in orange

A

FLEXOR DIGITI MINIMI BREVIS (plantar: 3rd layer)

ori: base of 5th metatarsal
ins: base of 5th proximal phalanx
inn: superficial branch of lateral plantar n
act: flex a MTP joint

17
Q

Identify the muscle in green.

A

ADDUCTOR HALLUCIS (plantar: 3rd layer)

light green: transverse head

ori: base of 3-5 metatarsal
ins: base 1st proximal phalans

dark green: oblique head

ori: base 2-4 metatarsals
ins: base of 1 proximal phalanx
inn: deep branch of lateral plantar n
act: adduct foot

18
Q

Identify the muscle in blue.

A

PLANTAR INTEROSSEUS (plantar: 4th layer)

ori: medial side of 3-5 metatarsals
ins: base of 3-5 proximal phalanges
inn: deep branch of lateral plantar n
act: adduction

19
Q

identify the muscle in green

A

DORSAL INTEROSSEUS (plantar: 4th layer)

ori: shaft of 1-5 metatarsal
ins: base of 2-4 proximal phalanges
inn: deep branch of lateral plantar n
act: abduction

20
Q

Where can the plantar interosseus and dorsal interosseus be seen?

A

both visible on plantar side

only dorsal interosseus visible on dorsal side

21
Q

Identify the muscle in purple

A

OPPONENS DIGITI MINIMI (plantar:4th layer)

ori: long plantar ligament
ins: shaft of 5th metatarsal
inn: superficial branch of lateral plantar n
act: opposes

22
Q

Explain the plantar blood supply.

A
23
Q

Explain the plantar nerve supply.

A
24
Q

Explain the different layers of muscles in the plantar aspect of the foot.

A

1st layer: abductor hallicus, abductor digit minimi, flexor digitorum brevis

2nd layer: quandratus plantar, lumbricals

3rd: flexor hallicus brevis, flexor digiti minimi brevis, adductor hallicus

4th layer: opponens digiti minimi, plantar interrosseus, dorsal interosseus

25
Q

Describe the myotomes of the back, trunk and upper limb.

A

CI-C2: i nod to you (neck flexion & extension)

C2-C3: don’t tickle me (neck lateral flexion)

C4: i dont know (shoulder elevation)

C5: feel alive (shoulder abduction, flexion, medial rotation)

C6-C7-C8: close the gate (shoulder adduction, extension, medial rotation)

C5-C6: pick up the sticks (elbow flexion)

C7-C8: lay em straigh (elbow extension)

C5-C6: flick the wrist (forearm supponation)

C7-C8: time is late (forearm pronation)

C6-C7: fly up to heaven (wrist flexion&extension)

C7: Rock (Finger flexion, thumb extension)

C8: Paper (finger extension)

T1: Scissors (abduction, adduction finger)

26
Q

Describe the myotomes of the lower limb.

A

L2-L3: i bend my knee (hip flexion)

L3-L4: i kick the door (knee extension)

L4-L5: point up to the sky (dorsi flexion)

L5-S1: i kick my bum (knee flexion)

S1-S2: stand on my shoes (plantar flexion)

L1-L2-L3: modesty closes the door (hip adduction)

L5-S1-S2: the opposite is true (hip abduction)

L4: medial off the floor (inversion)

L5-S1: lateral up to the sun (eversion)

27
Q

Which anterior rami are tested in this bicep jerk reflex?

A

C5-C6

28
Q

Which anterior rami are tested during the knee jerk reflex?

A

L3-L4

29
Q

Which anterior rami are tested during a tricep jerk reflex?

A

C7-C8

30
Q

Which anterior rami are tested during the ankle jerk reflex?

A

ANAT 315 (: (6 decks)

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