Neuro05

Question 1

(1)

Question 2

(01)

1. What is a motor unit?

Answer 2

1. a single alpha motor neuron and all of the corresponding muscle fibers it innervates.

Question 3

(02)

(Lower Motor Neuron (LMN))

1. LMN is the efferent neuron of the PNS that connects what with what?
2. sensory neuron = ?

Answer 3

1. CNS with muscle
2. afferent neuron

Question 4

(04)

(Clinial Signs of Diseases of the Lower Motor Neuron)

1-4. what four?

Answer 4

1. paresis or paralysis
2. hyporeflexia or areflexia
3. hypotonia or atonia

4 neurogenic atrophy

Question 5

((05))

Question 6

(06)

(causes of Wallerian Degeneration)

1-4. what are they?

Answer 6

1. transection
2. compression and crushing
3. nerve stretching
4. cell body injury (degeneration and infection)

Question 7

(07)

Don’t know if this is a quiestion or not..

Question 8

(08)

Answer 8

B C D A

Question 9

(09)

(Disease of the PNS)

Question 10

(10)

(Traumatic Lesions)

Answer 10

1. brachial plexus

Question 11

(11)

(Degenerative Disease of the PNS)

(Nutritional)

1. what in swine?
2. what in chickens?

(Metabolic)

3. what two neuropathies?

Answer 11

1 pantothenic acid deficiency

2. riboflavin deficiency
3. diabetic and hypothryoid

Question 12

(12)

(Degenerative Disease of the PNS)

(Toxic)

what are they?

Answer 12

Question 13

(13)

Question 14

(14)

(Hereditary disease of the PNS)

I have no idea what I am supposed to be getting from this…

Question 15

(15)

(Inflammatory Diseases)

Answer 15

Question 16

(16)

Question 17

(17)

Question 18

(18)

Question 19

(19)

(Peripheral nerve sheath tumor (Schwanoma/malignant schwanoma))

1. most common in what?

also seen in what?

(gross)

2. Nodular thickenings of large nerve trunks, well demarcated, firm fibrillar to gelatinous, white to grey.

benign or malignant?

(Bovine - often multiple)

1. seen where?

(Dogs)

seen where - look at pics

Answer 19

1. adult bovine

dogs (> cats)

2. generally benign - though malignant variants exist

Question 20

Question 21