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Lower limb anatomy EXAM > Nerves, arteries & veins > Flashcards

Nerves, arteries & veins Flashcards

1
Q

Femoral triangle-boundaries:

A

SUP: inguinal lig attached between ASIS and pubic tibercle LAT: Sartorius MED: Adductor longus

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2
Q

Boundaries of of popliteal fossa?

A

Superomed: Semitendinosus & Semimembranosus Superolat: Biceps femoris Inferomed: Med head of gastroc Inferolat: Lat head of gastroc NOTE: popliteal artery is the deepest structure in the fossa and descends from the upper med side. The fossa also contain popliteal vein and sciatic nerve plus its two terminal branches; tibial and common fibular nerve.

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3
Q

Which major nerves originate from the lumbosacral plexus and leave the abdomen and pelvis to enter the lower limb?

A

Femoral nerve Obturator nerve Sciatic Sup gluteal Inf gluteal Lat fem cutaneous Post cutaneous

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4
Q

Where are the cell bodies of sensory neurons?

A

Cell bodies of sensory neurons are in the DORSAL ROOT ganglion

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5
Q

Where are the cel bodies of MOTOR neurons?

A

Cell bodies of motor neuroins are in the VENTRAL or LATERAL HORNS of the spinal cord (depending if its SNS or ANS)

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6
Q

What is the ventral rami level of: - Lumbar plexus - Lumbosacral trunk - Sacral plexus

A

Ventral rami level of: - Lumbar plexus = L1-L4 - Lumbosacral trunk = L4-L5 - Sacral plexus = S1- S4

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7
Q

Which nerves originate from the lumbar plexus?

A
  1. Femoral n 2. Obturator 3. Lateral femoral cutaneous n of thigh 4. Lumbosacral trhink
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8
Q

FEMORAL NERVE: What M branches is innervated? What is the articular branches? What is the cutaneous branches?

A

M branches: - Flexors of hip
- Extensors of knee

Articular:
- Hip & knee jt

Cutaneous:

  • Anterior cutaneous br of thigh
  • Saphenous n
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9
Q

OBTURATOR NERVE:
What M branches is innervated?

What is the articular branches?

What is the cutaneous branches?

A

M branches:

  • 3x adductor m
  • gracilis
  • obturator ext
  • pectineus

Cutaneous branches:
- Med aspect of thigh

Articular branches:

  • hip & knee jt
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10
Q

LATERAL FEMORAL CUTANEOUS N OF THIGH

What M branches is innervated?

What is the articular branches?

What is the cutaneous branches?

A

M branches:

  • None :) (se navnet)

Cutaneous:

  • Skin on the anterolateral aspect of thigh
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11
Q

LUMBOSACRAL TRUNK is what?

A

Communicating branch. Joins sacral & lumbar. most L4/L5

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12
Q

Which nerves originate from the SACRAL PLEXUS?

A
  • Sciatic
  • Terminal branches of sciatic:

* Tibial n

* Common fibular n

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13
Q

SCIATIC NERVE:

What M branches is innervated?

What is the articular branches?

What is the cutaneous branches?

A

M braches:

  • M in post comp of thigh => hamstings + add magnus (hamstring part)

Articular branches:
- hip jt

Cutaneous:

None!

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14
Q

TIBIAL N:

What M branches is innervated?

What is the articular branches?

What is the cutaneous branches?

A

Muscular branches:

  • Post comp of leg

Articular branches:

  • knee jt

Cutaneous branches:
- Sural cutaneous n

  • Medical calcaneal n
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15
Q

MEDIAL PLANTAR NERVE:

–> Terminate from which nerve?

What M branches is innervated?

What is the articular branches?

What is the cutaneous branches?

A

Terminate from TIBIAL n

Muscular branch:

  • FDH
  • AbdH
  • FHB
  • 1st lumbrical

Cutaneous:

  • Med side of foot and med 3,5 digits (big toe and half of 4th)
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16
Q

LATERAL PLANTER NERVE

-> terminate from?

What M branches is innervated?

What is the articular branches?

What is the cutaneous branches?

A

-> Terminal branch from tibial n

Muscular:

  • FDM
  • AbdDM
  • All interossei
  • 2-4th lumbricals
  • AddH

Cutaneous:

  • Lat side of foot and lat 1,5 digits (little toe and half of 4th)
17
Q

COMMON FIBULAR NERVE

What M branches is innervated?

What is the articular branches?

What is the cutaneous branches?

A

M:

  • None (short head of biceps fem)

Articulate:

  • Knee jt & superior tibio-fibular jt

Cutaneous:

  • LAt sural cutaneous nerve
18
Q

DEEP FIBULAR N

What M branches is innervated?

What is the articular branches?

What is the cutaneous branches?

A

branch of common fibular n

M:

-Ant comp of leg: Ta, EHL, EDL, FT

Articular branches:

  • knee, superior tibiofibular, ankle + jt of foot.

Cutaneous:

  • 1st web space
19
Q

SUPERFICIAL FIBULAR NERVE

What M branches is innervated?

What is the articular branches?

What is the cutaneous branches?

A

M:

  • Lat comp: FL + FB

Articular branches:

? Lower half og ant and lat leg. Dorsum of foot except 1st web space.

Cutaneous:

  • Knee, sup tibiofibular, ankle and jt of foot
20
Q

Nerves of the GLUTEAL region via SACRAL PLEXUS

A

Above piriformis:

  • Sup gluteal n. -> Supplies Gmed & TFL.

Below piriformis:

  • Inf gluteal nerve => Gmax.
  • Posterior femoral cutaneous n of thigh

* artery accompaies nerve

21
Q

What does the femoral and popliteal arteries supply?

Which nerve is these two a branch of?

A

Supplies:

  • Ant, post, med M comp of thigh (= all comp!)
  • Hip & knee jt

External iliac artery –> Femoral artery (+deep artery of thigh) –> Popliteal artery which splits into ant tib (-> dorsalis pedis) + post tib (Med & lat plantar arteries)

22
Q

Branch of post tib artery -> fibular artery

A

Fibular artery descneds within FHL (Harry) on MED side of fibular

Supplies: M in post & lat comp of leg.

23
Q

What is the difference between a dermatome, myotome & cutaneous innervation?

A

Dermatome: Area of skin supplied by a single spinal cord level or on one side, by a single spinal nerve.

Cutaneous innervation: Area of skin supplies by a spesific peripheral n!

Myotome:

  • Proportion of skeletal M innervated by a single spinal cord level or on one side y a single spinal nerve-

Lower limb anatomy EXAM (12 decks)

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