CC7: Major plexuses and Peripheral Nerves Flashcards Preview

Histo and Neuro pt 3 > CC7: Major plexuses and Peripheral Nerves > Flashcards

Flashcards in CC7: Major plexuses and Peripheral Nerves Deck (22)
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1
Q

provides major sensory and motor innervation for the upper extremities

A

Brachial plexus

2
Q

provides major sensory and motor innervation to the lower extremities and pelvis

A

lumbar plexus

3
Q

Erb-Duchenne palsy (“waiter’s tip”)

A

C5-C6 plexopathy-

4
Q

Weakness of shoulder abduction (deltoid) , elbow flexion (biceps) , arm supination (infraspinatus) and wrist extension

A

Erb Duchenne

5
Q

Common in accidents and newborns when head is pushed away from the shoulder

A

Upper Trunk Plexopathy

6
Q

Klumpke’s Palsy

A

C8-T1 plexopathy

7
Q

– Severe hand weakness, atrophy (wasting)of muscles, claw hand (weakness of all lumbricals)
– Numbness and abnormal sensations (paresthesias) of medial aspect of hand and forearm

A

Klumpke’s palsy

8
Q

Smallpupil(miosis),droppedeyelid(ptosis), decreased facial perspiration (anhidrosis)

A

T1 nerve is damaged before giving fibers to sympathetic system(horners)

9
Q

Horner’s syndrome

A

ptosis, miosis, anhydrosis

10
Q

Lower Trunk Plexopathy

A

Usually occurs when the arm and shoulder are pulled up (upward traction) such as when grabbing a branch during a fall from a tree

11
Q

Lower brachial plexus is compressed between the clavicle and the first rib

A

neurogenic Thoracic Outlet Syndrome

12
Q

Initially, lower brachial plexus injury by an apical lung tumor

A

Pancoast’s Syndrome

13
Q

Acute onset shoulder and arm pain (usually intense, burning) followed by sensory loss and weakness of muscles innervated by brachial plexus- inflammatory

A

Idiopathic Brachial Plexitis- Parsonage-Turner Syndrome

14
Q

Burning, lancinating pain on hips and anterior thigh , followed by weakness and wasting of thigh muscles, causing buckling of knee due to quadriceps weakness

A

Diabetic Lumbosacral Plexopathy

15
Q

develops pain and tingling in his right thumb, index and middle fingers that is worse at night.

A

Median Nerve

16
Q

Entrapment syndrome by compression of median nerve as passes under flexor retinaculum on flexor surface of wrist- carpal tunnel

A

carpal tunnel syndrome

17
Q

slipped on wet floor and twisted right foot toward the left, causing pain and weakness.

A

Common Peroneal (Fibular) Nerve Palsy

18
Q

weakness and numbness and tingling in left leg, over anterior thigh down to medial calf above foot.

A

Femoral Neuropathy

19
Q

Lateral femoral cutaneous nerve entrapped as passes under inguinal ligament and fascia lata

A

Meralgia Paresthetica

20
Q

Associated to trauma as passes in cubital tunnel of elbow, entrapment due to degenerative disease, habit of resting elbows on hard table

A

Ulnar Neuropathy

21
Q

Weakness of all foot and ankle muscles and of knee flexion, loss of Achilles tendon reflex

A

Sciatic neuropathy

22
Q

Weakness of extensors of arm, hand and fingers, sensory loss in radial nerve distribution, often with wrist drop

A

Radial neuropathy