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YR3S2- anesthetics > Wk3- Nerve Anatomy > Flashcards

Wk3- Nerve Anatomy Flashcards

1
Q

Why is anatomy important

A
  1. Avoid neurovascular structures
  2. Need to know which nerves to block and where to
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2
Q

Sciatic nerve branches off into and where

A

Tibial nerve and common fibular nerve
At popliteal fossa

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3
Q

Sciatic nerve muscular branches go to

A

Biceps, semimembranosus, semitendinosus, part of adductor Magnus

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4
Q

What nerve roots make up tibial nerve

A

L4, l5, s1, s2, s3

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5
Q

What branches off the tibial nerve

A

Sural

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6
Q

What branches off tibial nerve

A

Sural

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7
Q

What branches off tibial nerve

A

Sural, medial calc, medial and lateral plantar nerves

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8
Q

What muscles does the tibial nerve innervate

A

Gastroc, soleus, plantaris, tib post, popliteus, flexor digital longus, flexor hallucis Longus

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9
Q

Medial plantar nerve innervates what muscles in the foot

A

abductor hallucis, flexor digital Brevis, flexor hallucis brevis, 1st lumbrical

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10
Q

Lateral plantar nerve innervates what muscles in the foot

A

Abductor digiti mini
Quadratus plantar
2,3,4 lumbricals
Adductor hallucis
Flexor digiti minimi brevis
Dorsal and plantar interossei

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11
Q

what branches off medial plantar nerve

A

medial proper plantar digital nerve (blocked during a hallux block),

4 common plantar digital nerves

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12
Q

lateral plantar nerves branches off into

A

superficial branch divides into medial and lateral branches

medial- communicates with the medial plantar nerve and supplies the skin overthe 4th interdigital cleft

lateral- goes to 3rd/4th interossei and skin on lateral of 5th toe

deep branch- 2/3/4/ lumbricals, 1st/2nd plantr interossei, adductor hallucis

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13
Q

nerve root that makes up common peroneal nerve

A

l4, l5, s1, s2

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14
Q

what branches off common peroneal

A

lateral sural cutaneous nerve
sural communicating nerve
deep and superficial peroneal nerves that divides just below head of fibular

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15
Q

what does common peroneal innervate

A

short head of biceps femoris

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16
Q

superficial peroneal nerve innervates muscles/cutaneous

A

peroneal longus/brevis muscles

cutaneous of lower 1/3 of leg and dorsum of foot

17
Q

superficial peroneal branches into

A

above the ankle it divides into medial and lateral dorsal cutaneous nerves

18
Q

medial/lateral dorsal cutaneous nerves branch off how

A

medial - divides into two dorsal digital nerves, one going to the medial side of 1st toe, the other branching off to the 2nd/3rd toe to make proper digital nerves

lateral- divides into 2 common dorsal digital nerves for the 3rd and 4th toes and 4th and 5th toe

19
Q

how many layers of muscles plantarly

A

4

20
Q

1st layer of plantar muscles

A
  1. abductor hallucis
  2. flexordigitorum brevis
  3. abductor digiti minimi
21
Q

2nd layer of plantar muscles

A
  1. quadratus plantae
  2. lumbricals
  3. flexor digitorum longus tendon
  4. flexor hallucis longus tendon
22
Q

3rd layer

A
  1. flexor hallucis brevis
  2. adductor hallucis
  3. flexor digiti minimi brevis
23
Q

4th layer

A
  1. tib post tendon
  2. peroneus longus tendon
  3. 3 plantar interossei
  4. 4 dorsal interossei
24
Q

what muscles are in the medial compartment of sole

A

abductor hallucis
flexor hallucis brevis

25
Q

what muscles are in the central of sole

A

quadratus plantae
adductor hallucis
post tib neurovasuclar bundle

26
Q

what muscles are in the lateral compartment of sole

A

abductor digiti minimi
flexor digiti minimi brevis

27
Q

injection systems

A
  1. needle free
  2. needle
  3. computer assisted anaesthesia
28
Q

what is needle free injection

A

high pressure, narrow jet of anaesthetic powered by air/gas cylinder/spring

29
Q

what can u use needle free injection for

A

-post tib block
-verruca removal
-nail surgery
-removal of neurovascular corns

30
Q

types of needle free injections

A

-MadaJet
-DermoJet
-Bioject

31
Q

pros of needleless

A

reduces pt concerns
fast
consistent dosage
reduce injuries

32
Q
A

YR3S2- anesthetics (8 decks)

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