Lab 5 Flashcards

1
Q

Where does the lumbosacral trunk come from?

A

L4-L5

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2
Q

What does the lumbosacral trunk connect?

A

Lumbar plexus with the sacral plexus

-It descend the pelvis to join the 1st sacral nerve

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3
Q

Where does the Lateral cutaneous nerve of the thigh (Lateral femoral cutaneous nerve) come from?

A

L2-L3 (Lumbar plexus)

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4
Q

What does the lateral femoral cutaneous nerve innervate?

A

Skin over lateral and anterior thigh and lateral part of the thigh

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5
Q

Where does the Obturator nerve come from?

A

L2, L3, L4

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6
Q

Where does the Accessory Obturator come from?

A

L3, L4

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7
Q

Where does the Femoral nerve come from?

A

L2, L3, L4

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8
Q

Where does the genitofemoral nerve come from?

A

L1, L2

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9
Q

Where does the iliohypogastric nerve come from?

A

L1

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10
Q

Where does the ilioinguinal nerve come from?

A

L1

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11
Q

What does the ilioinguinal nerve innervate?

A
  • Skin and upper medial part of thigh
  • Skin over the root of the penis and upper part of the scrotum (male)
  • Skin covering mons pubis and labium majus (female)
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12
Q

Where does the ilioinguinal nerve run?

A

Above spermatic fascia/spermatic cord (NOT within cord)

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13
Q

Where does the genital branch of the genito-femoral nerve run?

A

Within the spermatic cord/fascia.

It runs alongside the Ductus (vas) deferens

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14
Q

What does the iliohypogastric nerve innervate?

A
  • Skin over lateral gluteal region and above pubis

- Internal and transverse abdominal muscles

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15
Q

Where does the subcostal nerve run? Where does it originate?

A

Runs along the lower boarder of 12th rib.

T12

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16
Q

What does the subcostal nerve innervate?

A

Sensory innervation to the skin over the hip

17
Q

Where does the femoral branch of the genitofemoral nerve pass? What does it supply?

A

It passes beneath the inguinal ligament within the femoral sheath.
Supplies: skin over the femoral triangle

18
Q

Where does the genital branch of the genitofemoral nerve pass? What does it supply?

A

Runs to the deep inguinal ring and traverses inguinal canal to supply the cremaster muscle

19
Q

What is the cremasteric reflex?

A

Elevates testicles in response to light stroking of the inner thigh or cold temperatures applied to the scrotum. The sensory limb is carried in the femoral branch; the motor limb is carried in the genital branch.

20
Q

What does the Obturator nerve innervate?

A

Medial compartment of the thigh

21
Q

What does the femoral nerve innervate?

A

Anterior compartment of the thigh. Supplies skin of upper thigh and inner leg. Supplies muscles that extend the knee.