Lab 2 Flashcards Preview

BMS 337 (Neuro) > Lab 2 > Flashcards

Flashcards in Lab 2 Deck (23):
1

2

2?

3?

Q image thumb

2- Caudate nucleus

3- Thalamus

A image thumb
3

4?

5?

Q image thumb

4- Lateral geniculate nucleus

5- Medial geniculate nucleus

A image thumb
4

Name the cerebral lobe that receives information from the lateral geniculate nucleus
 

occipital lobe (visual cortex)

 

5

Name the cerebral lobe that receives information from the medial geniculate nucleus

  1. the ectosylvian gyrus in the temporal lobe (auditory cortex)

6

 

The basal nuclei are a part of the

 

a. sensory system
b. motor system
 

b. motor system
 

7

 

The thalamus is derived from the:

a. diencephalon
b. mesencephalon
c. telencephalon
 

 

diencephalon
 

8

1

2

Q image thumb

  1. White matter
  2. Gray matter

A image thumb
9

3

4

5

Q image thumb

3- Caudate nucleus

4- Corpus callosum

5- Internal capsule

A image thumb
10

6

7

Q image thumb

6- Thalamus

7- Hypothalamus

A image thumb
11

 

What is the functional difference between the corpus callosum and internal capsule?
 

  1. Corpus callosum sends signals back and forth to each hemispheres of brain

  2. Internal capsule sends all fibers to and from the cerebral cortex

12

 

In humans, an experimental surgery that transplants dopamine producing cells into the caudate nucleus is performed to improve some patients with Parkinson’s disease.

If you were to practice this surgery on a dog, how would you surgically access the caudate nucleus with minimum damage to other neural
tissues?
 

Dorsal, aspect, through corpus callosum to then separate the two hemispheres

13

1

2

3

Q image thumb

  1. Rostral colliculus (looks like balls) 
  2. Caudal colliculus (looks like pointy boobs)
  3. Trochlear nerve

A image thumb
14

1?

2?

3? (that very small line)

 

Q image thumb

  1. Crus cerebri
  2. oculomotor nerve
  3. Trochlear nerve

A image thumb
15

What structure of the midbrain gives rise to the trochlear nerve?
 

Caudal colliculus

16

 

The motor nucleus of the trochlear nerve gives rise to the trochlear nerve. This nucleus is located in the midbrain at the level of the caudal colliculi:

  • What clinical sign would you expect to see when this motor nucleus is involved in a lesion of the right midbrain in a dog or cat?

Extorsion of the left eye

17

 

The motor nucleus of the trochlear nerve gives rise to the trochlear nerve. This nucleus is located in the
midbrain at the level of the caudal colliculi:

  • What would you expect to see if the right trochlear nerve is inflamed in a dog or cat?

Extorsion of the right eye

18

 

c. What is the functional difference between the lateral geniculate nucleus and the rostral colliculus?

 

  1. Lateral geniculate nucleus - conscious visual information - sensory
  2. Rostral colliculus is the center for visual reflex - sensory and motor

 

19

 

The crus cerebri is a part of the:

a. sensory system

b. motor system
 

Motor system

20

 

Where do fibers of the crus cerebri originate?
 

Originate in the cerebral cortex and descend in the internal capsule

21

 

List three clinical signs induced by a lesion of the right oculomotor nerve?
 

  1. Ptosis of right eye (drooped eyelid)
  2. ventrolateral strabismus
  3. Dilated pupil

22

1, What type of matter

2, What type of matter

 

Q image thumb

1- White matter

2- Grey matter

A image thumb
23

3

4

5

Q image thumb

3- Caudate nucleus

4- Corpus callosum

5- Internal capsule

A image thumb