Anatomy Flashcards

1
Q

Difficulty standing from sitting position, which nerve might be affected

A

Inferior gluteal nerve

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2
Q

Major hip flexor?

A

Illiopsoas muscle

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3
Q

Major hip extensor?

A

Gluteus maximus

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4
Q

Muscles of the anterior compartment of the thigh

A

Sartorius and quads

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5
Q

Muscles of the medial compartment of the thigh

A

Pectineus, Gracilis, Adductors

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6
Q

What nerve innervates the gracilis

A

Obturator nerve

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7
Q

Obturator nerve and sciatic nerve supply what muscle

A

Adductor Magnus

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8
Q

Superior gluteal nerve supplies what muscles?

Injury presents how?

A

Gluteus minimus and medius, tensor fascia latae and piriformis
Trendelenburg sign. Pelvis tilts with walking because weight bearing leg cannot maintain balance.

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9
Q

Lumbar plexus

A

network of nerves T12 to L4

Supplies skin and muscles of lower limb

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10
Q

Sacral Plexus

A

L4 to S4

Skin and muscles of pelvis and lower limb

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11
Q

What nerve derives from T12 to L1 level

A

Iliohypogastric nerve

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12
Q

What nerve is motor to internal oblique and transverse abdominis

A

Iliohypogastric

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13
Q

Innervates the cremasteric muscle?

A

Genital branch of genitofemoral nerve

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14
Q

Motor function of the lateral cutaneous nerve of the thigh

A

None

Sensory: Innervates anterior and lateral thigh down to the level of the knee

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15
Q

What nerve is sensory to the suprapubic region

A

Iliohypogastric

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16
Q

Common source of injury to iliohypogastric nerve

A

Abdominal or pelvic surgery

Post transverse incisions, sutures may trap nerves

17
Q

Nerve from L1 to L2?

A

genitofemoral nerve

18
Q

Cremasteric reflex? what is it? How can it be lost?

A

Stroke inner thigh, scrotum rises on ipsilateral side

Injury to genitofemoral nerve

19
Q

Lateral femoral cutaneous nerve can be compressed how?

A

Tight clothing, obesity, pregnancy

Meralgia paresthetica - other thigh nerve syndrome, burning pain, paresthesia (numbness/tingling), hypesthesia (diminished sensation)

20
Q

Obturator nerve

A

Motor to thigh adductors
Adductor longs, brevis, Magnus, Obturator externus, gracilis

Sensory to small part of medial thigh

Can be injured during pelvic surgery.
Weak adduction

21
Q

Who innervates anterior thigh muscles, hip flexors, knee extensors

A

Femoral nerve

22
Q

Hip flexors?

A

The primary hip flexors are the pectineus, iliacus, and sartorius muscles

23
Q

Knee extensors

A

Quads (vastus intermedialis is deep to rectus femoris)

24
Q

Saphenous nerve?

A

Femoral nerve gives off saphenous nerve

Innervates skin on medial leg and foot

Saphenous vein stripping for CABG may damage saphenous nerve, causing numbness in lower leg

25
Q

Injury to femoral nerve?

A

Weak thigh flexion and knee extension,

absent patellar reflex

26
Q

Sciatic nerve

A

L4 to L3
Largest nerve in body
Branches: common peroneal and tibial

27
Q

Common peroneal?

A

Branch: Superficial fibula - evert the foot

Branch: deep fibula - dorsiflexion of foot, extension of toes

28
Q

Symptoms, common peroneal nerve injury

A
Foot drop (weak dorsiflexion ) 
Foot feels limp
Sensory loss, dorm of foot, lateral shin
29
Q

Tibial nerve

A

Motor to posterior leg muscles
Sensory to heel/toe

Plantar flexion, toe flexion, inversion

30
Q

Pudendal nerve

A

s2-s4
Nerve supply to genital area

SEnsory: penis, clitoris, skin of perineum

31
Q

Pudendal nerve block has been replaced by

A

Epidural

32
Q

Hip abductors?

A

Hip abduction is performed by the gluteus medius, minimus, piriformis and tensor fascia latae