Nerves, arteries & veins

Question 1

Femoral triangle-boundaries:

Answer 1

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

Question 2

Boundaries of of popliteal fossa?

Answer 2

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.

Question 3

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

Answer 3

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

Question 4

Where are the cell bodies of sensory neurons?

Answer 4

Cell bodies of sensory neurons are in the DORSAL ROOT ganglion

Question 5

Where are the cel bodies of MOTOR neurons?

Answer 5

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

Question 6

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

Answer 6

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

Question 7

Which nerves originate from the lumbar plexus?

Answer 7

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

Question 8

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

Answer 8

M branches: - Flexors of hip
- Extensors of knee

Articular:
- Hip & knee jt

Cutaneous:

• Anterior cutaneous br of thigh
• Saphenous n

Question 9

OBTURATOR NERVE:
What M branches is innervated?

What is the articular branches?

What is the cutaneous branches?

Answer 9

M branches:

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

Cutaneous branches:
- Med aspect of thigh

Articular branches:

• hip & knee jt

Question 10

LATERAL FEMORAL CUTANEOUS N OF THIGH

What M branches is innervated?

What is the articular branches?

What is the cutaneous branches?

Answer 10

M branches:

• None :) (se navnet)

Cutaneous:

• Skin on the anterolateral aspect of thigh

Question 11

LUMBOSACRAL TRUNK is what?

Answer 11

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

Question 12

Which nerves originate from the SACRAL PLEXUS?

Answer 12

• Sciatic
• Terminal branches of sciatic:

* Tibial n

* Common fibular n

Question 13

SCIATIC NERVE:

What M branches is innervated?

What is the articular branches?

What is the cutaneous branches?

Answer 13

M braches:

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

Articular branches:
- hip jt

Cutaneous:

None!

Question 14

TIBIAL N:

What M branches is innervated?

What is the articular branches?

What is the cutaneous branches?

Answer 14

Muscular branches:

• Post comp of leg

Articular branches:

• knee jt

Cutaneous branches:
- Sural cutaneous n

• Medical calcaneal n

Question 15

MEDIAL PLANTAR NERVE:

–> Terminate from which nerve?

What M branches is innervated?

What is the articular branches?

What is the cutaneous branches?

Answer 15

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)

Question 16

LATERAL PLANTER NERVE

-> terminate from?

What M branches is innervated?

What is the articular branches?

What is the cutaneous branches?

Answer 16

-> 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)

Question 17

COMMON FIBULAR NERVE

What M branches is innervated?

What is the articular branches?

What is the cutaneous branches?

Answer 17

M:

• None (short head of biceps fem)

Articulate:

• Knee jt & superior tibio-fibular jt

Cutaneous:

• LAt sural cutaneous nerve

Question 18

DEEP FIBULAR N

What M branches is innervated?

What is the articular branches?

What is the cutaneous branches?

Answer 18

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

Question 19

SUPERFICIAL FIBULAR NERVE

What M branches is innervated?

What is the articular branches?

What is the cutaneous branches?

Answer 19

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

Question 20

Nerves of the GLUTEAL region via SACRAL PLEXUS

Answer 20

Above piriformis:

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

Below piriformis:

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

* artery accompaies nerve

Question 21

What does the femoral and popliteal arteries supply?

Which nerve is these two a branch of?

Answer 21

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)

Question 22

Branch of post tib artery -> fibular artery

Answer 22

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

Supplies: M in post & lat comp of leg.

Question 23

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

Answer 23

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-