Brain Anatomy: Clinical Expierence

Question 1

Which yellow arrow is the optic nerve? What # cranial nerve is it? Which of the other two are the optic chasm and optic tract?

Answer 1

Question 2

Check your understanding of encoding of visual information.

Answer 2

Question 3

Answer 3

Question 4

What happens when there is damage to the optic nerve vs optic tract?

Answer 4

Question 5

What happens when there is a lesion in the optic chiasm?

Answer 5

Question 6

Test:

Answer 6

Question 7

Where is the primary motor cortex located? What is this region involved in?

Answer 7

Question 8

What are “upper motor neurons”? Where are they located?

Answer 8

Cells that make direct connections to somatic motor neurons in the spinal cord. They are located in the precentral gyrus.

Question 9

What’s the difference between upper motor neurons and somatic motor neurons?

Answer 9

Upper motor neurons connected directly to somatic motor neurons in the spinal cord. (Give direction)
Somatic motor neuron activates the skeletal muscle. (Follow orders)

Question 10

What type of neuron is this?

Answer 10

Upper motor neuron.

Question 11

What are 3 negative signs doctors look for to diagnose an upper motor neuron disorder?

Answer 11

Paralysis
Loss of dexterity
Weakness

Question 12

For upper motor neurons:
Cell bodies are in the ________ ______.
Axons are in the ________ _________.
Axons cross at the medulla and travel in the spinal cord in the lateral corticospinal ____.

Answer 12

Question 13

Fill in the blanks

Answer 13

Question 14

Fill in the blank:

Answer 14

Question 15

Answer 15

Question 16

Answer 16

Question 17

Answer 17