20. Descending Motor Pathway :-

Question 1

Motor Physiology :-

Image :-
Upper motor neuron :-
Lower motor neuron :-

Lower motor neuron types
1.
2.

Answer 1

81.

Question 2

Cortical motor neuron :-

Motor cortex present in :-
Corresponding to broadmann area :-
Motor cortex is always :-

Answer 2

81

Question 3

1. Primary motor cortex :-
   Cortical association area :-
   Control :-

2 . Pre motor cortex :-
Control :-

3. Supplementary motor cortex :-
   Control :-

Answer 3

81

Question 4

Cortico Spinal Tract 
Aka :- 
It’s a. :- 
Origin :- 
Contribution :- 
1. 
2. 
3. 
80% of CS tract :- 
20% of CS tract :-

Answer 4

82

Question 5

Brain steam motor area :- 
Has 4 tract pathways :- 
Collectively called :- 
1. 
2. 
3. 
4. 
Fibers from .......form :-

Answer 5

82

Question 6

Lateral motor pathway vs medial motor pathway
1.
2.
3.

Answer 6

82

Question 7

Image

1. Gamma motor neuron :- regulate :-
2. Alpha motor neuron :- cause :-

Answer 7

82

Question 8

Descending motor pathways

1. Decrebrate rigidity cause due to complete transaction of :-
   a:- effect due to loss of :-
   b :- brain stem pathways are :-
   c :- overactivation of ………….pathway
   1.
   2.
   In decerebrate rigidity
   All 4 limbs are :-
   Forearm is :-
   In such pt if anterior surface of cerebellum removed :-

Decerebrate rigidity aka :-
Decerebellate rigidity aka :-

Answer 8

83

Question 9

Decorticating rigidity 
Due to removal of:- 
Only losss of :- 
Overactive pathway is :- 
CF are 
1. Extension of :- 
2. Flexion of :-

Answer 9

83

Question 10

Decerebrate rigidity is seen in :-

Decorticating rigidity seen in :-

Answer 10

83