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DH: Principles I > Final- Regional Neuroanatomy Part 2 > Flashcards

Final- Regional Neuroanatomy Part 2 Flashcards

1
Q

What provides motor and sensory innervation for the pelvis and lower limbs?

A
  • Lumbosacral plexus
  • Lumbar plexus (superior)
  • Sacral plexus (inferior)
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2
Q

What spinal nerves contribute to the lumbosacral plexus?

A
  • Spinal Nerves L1 to S4.
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3
Q

What spinal nerves contribute to the lumbar plexus?

A
  • Spinal Nerves L1 to L4
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4
Q

What spinal nerves contribute to the sacral plexus?

A
  • Spinal Nerves L4 to S4.
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5
Q

What are the 6 nerves that make up the lumbar plexus?

A
  • Iliohypogastric nerve (L1)
  • Ilioinguinal nerve (L1)
  • Genitofemoral nerve (L1-L2)
  • Lateral cutaneous nerve of the thigh (L2-L3)
  • Obturator nerve (L2-L4)
  • Femoral nerve (L2-L4)
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6
Q

What is the largest diameter nerve in the lumbar plexus?

A
  • Femoral nerve
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7
Q

What are the 3 superior pelvic nerves?

A
  • Iliohypogastric nerve
  • Ilioinguinal nerve
  • Genitofemoral nerve
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8
Q

What muscle do the 3 superior pelvic nerves originate from?

A
  • Psoas major muscle
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9
Q

The Iliolhypogastric nerve will provide sensory innervation to what parts of the body?

A
  • Small part of the lateral pelvis/hip through the lateral cutaneous branch
  • Anterior portion of the reproductive system through the anterior cutaneous branch
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10
Q

What muscles will have motor innervation through the iliohypogastric nerve?

A
  • Transverse abdominis (may be utilized when breathing under labor/stress)
  • Internal abdominis muscles
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11
Q

The Ilioinguinal nerve will provide sensory innervation to what parts of the body?

A
  • Medial upper quadricep muscle
  • Right above the reproductive organs
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12
Q

What muscles will have motor innervation through the ilioinguinal nerve?

A
  • Internal oblique muscle
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13
Q

The genitofemoral nerve branches off into what two nerves?

A
  • Femoral branch
  • Genital branch
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14
Q

What muscles in men will have motor innervation through the genitofemoral nerve?

A
  • Cremaster muscle/ Reflex
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15
Q

What ligament is attached to the pubic tubercle?

A
  • Inguinal Ligament
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16
Q

What are two attachment points for the inguinal ligament?

A
  • Anterior Superior Iliac Spine (ASIS)
  • Pubic Tubercle
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17
Q

A horizontal line across the iliac crest will indicate what landmark on the spine?

A
  • The border of L4 and L5
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18
Q

What are the muscles that make up the femoral triangle?

A
  • Iliopsoas
  • Sartorius
  • Pectineus
  • Adductor Longus
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19
Q

Describe the position of the femoral nerve, femoral artery, and femoral vein in the femoral triangle.

A
  • Femoral Nerve: Lateral
  • Femoral Artery: Middle
  • Femoral Vein: Medial

These structures are about 1 cm apart from each other.

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20
Q

What wraps around the femoral nerve, artery, and vein?

A
  • Femoral sheath
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21
Q

What nerve is responsible for the sensory innervation of the lower leg?

A
  • Saphenous Nerve

Saphenous Nerve is branched off the femoral nerve

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22
Q

The adductor canal is between what two muscles?

A
  • Anterior and medial thigh muscles
  • The adductor canal is also inferior to the femoral triangle.
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23
Q

What are the three muscles that surround the adductor canal?

A
  • Sartorius Muscle
  • Adductor Longus
  • Vastus Medialis
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24
Q

What does the adductor canal provide a pathway for?

A
  • Pathway for the saphenous nerve to pass through.
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25
Q

Which nerve provides sensory information to the lateral anterior thigh?

A
  • Lateral Cutaneous Nerve (LCA)
26
Q

What foramen does the obturator nerve pass through?

A
  • Obturator Foramen at the base of the pelvis
27
Q

The obturator nerve serves primarily as a motor neuron. What muscles does the obturator nerve innervate?

A
  • Obturator externus
  • Adductor longus
  • Adductor brevis
  • Gracilis
  • Pectineus
  • Adductor magnus
28
Q

Where would the obturator nerve provide sensory innervation?

A
  • There is a small cutaneous branch on the medial thigh just above the knee.
29
Q

What ligament will the femoral nerve sit right under?

A
  • Inguinal Ligament
30
Q

The femoral nerve will innervate what four muscles in the leg?

A
  • Iliopsoas
  • Pectineus
  • Sartorius
  • Quadricep femoris
31
Q

What are the sensory branches of the femoral nerve?

A
  • Anterior cutaneous branch of the femoral nerve
  • Saphenous nerve
32
Q

What are the primary motor nerves of the sacral plexus?

A
  • Superior gluteal nerve (L4-S1)
  • Inferior gluteal nerve (L5-S2)
33
Q

What are the three gluteal muscles?

A
  • Gluteus Maximus
  • Gluteus Minimus
  • Gluteus Medius
34
Q

What muscles does the superior gluteal nerve innervate?

A
  • Gluteus Medius
  • Gluteus Minimus
  • Tensor Fasciae Latae
35
Q

What muscles does the inferior gluteal nerve innervate?

A
  • Gluteus Maximus
36
Q

What four main nerves provide sensory innervation to the gluteal region?

A
  • Superior Clunial Nerve
  • Middle Clunial Nerve
  • Inferior Clunial Nerve
  • Lateral Branch of Iliohypogastric Nerve
37
Q

The superior clunial nerve is formed by what spinal nerves?

A
  • Posterior Rami of L1 to L3
38
Q

The middle clunial nerve is formed by what spinal nerves?

A
  • Posterior Rami of S1 to S3
39
Q

The inferior clunial nerve arises from what nerve?

A
  • Posterior femoral cutaneous (branch of the sacral plexus)
40
Q

The sciatic nerve is a combo of what two nerves?

A
  • Tibial Nerve (L4 to S3)
  • Common Fibular Nerve (L4 to S2)
41
Q

The sciatic nerve is formed from what spinal nerve?

A
  • Spinal Nerve L4 to S3
42
Q

What is another term for the common fibular nerve?

A
  • Peroneal Nerve
43
Q

What is the largest nerve in the body in terms of diameter?

A
  • Sciatic Nerve
44
Q

Label 1

A
  • Sciatic nerve
45
Q

Label 2

A
  • Common fibular nerve (peroneal nerve)
46
Q

Label 3

A
  • Deep fibular nerve
47
Q

Label 4

A
  • Superficial fibular nerve
48
Q

Label 5

A
  • Superficial fibular nerve
49
Q

The fibular nerve splits into what three divisions?

A
  • Lateral Sural Cutaneous Nerve
  • Superficial Fibular Nerve
  • Deep Fibular Nerve
50
Q

Where does the Lateral Sural Cutaneous nerve provide sensory innervation?

A
  • Lateral side of the calf
51
Q

Where does the Superficial Fibular Nerve provide sensory innervation?

A
  • Top of the foot
52
Q

What are the two branches of the superficial fibular nerve?

A
  • Medial dorsal cutaneous nerve
  • Intermediate dorsal cutaneous nerve
53
Q

Where does the Deep Fibular Nerve provide sensory innervation?

A
  • Between the Big Toe and 2nd Toe
54
Q

What are the branches of the Deep Fibular Nerve?

A
  • Lateral cutaneous nerve of the big toe
  • Medial cutaneous nerve of the 2nd toe
55
Q

Label 1, 2, and 3

A
  • 1: Sciatic Nerve
  • 2: Tibial Nerve (travels medially)
  • 3: Common Fibular Nerve (travels laterally)
56
Q

What are the four direct cutaneous branches of the tibial nerve?

A
  • Medial Sural Cutaneous Branch
  • Medial Calcaneal Branch
  • Lateral Calcaneal Branch
  • Lateral Dorsal Cutaneous Branch
57
Q

The tibial nerve will branch off to what two nerves at the foot?

A
  • Medial Plantar Nerve
  • Lateral Plantar Nerve
58
Q

What are the nerves that make up the sacral plexus?

A
  • Superior gluteal nerve
  • Inferior gluteal nerve
  • Posterior cutaneous nerve of thigh
  • Sciatic Nerve (Peroneal and Tibial n.)
  • Pudendal Nerve
59
Q

List the spinal nerve origins of the following:
-Superior gluteal nerve
-Inferior gluteal nerve
-Posterior cutaneous nerve of thigh
-Common fibular nerve
-Tibial nerve
- Pudendal nerve

A
60
Q

Name the function of the pudendal nerve

A
  • Sensory innervation to the pelvis
  • Rectum and colon motility
  • Reproductive organ function
61
Q

Where does the posterior cutaneous nerve of the thigh provide sensory innervation?

A
  • Hamstring
  • Lower Gluteal Region
  • This nerve is also the starting point of the inferior clunial nerve

DH: Principles I (50 decks)

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