Nerve tissues II

Question 1

What is the function of the choroid plexus

Answer 1

invaginated folds of Pia mater containing tufts of fenestrated capillaries and covered by simple cuboidal ependymal cells

Produces CSF in the lateral ventricles.

Question 2

What is this structure

Answer 2

choroid plexus

Question 3

What is the general organization of white matter?

Answer 3

• Found in the inner core of brain tissue
• Axons travel to parts of the CNS

Question 4

What is the general organization of the gray matter?

Answer 4

• Found in the outer layer
• cell bodies arranged in layers
• Nuclei-islands of grey matter that project into white matter tissue

Question 5

What structure is this?

Answer 5

White Matter

Question 6

What is this structure?

Answer 6

Gray matter

Question 7

Describe the general structure of the cerebral cortex.

Answer 7

• Has 6 grey matter layers
• contains afferent and efferent fibers
• Main cell type is Pyramidal cell
  
  • Layer 3 has large pyramidal cells

Question 8

What is gray matter layer I

Answer 8

Molecular level

Question 9

What is gray matter layer II

Answer 9

External granular layer

Question 10

What is gray matter layer III

Answer 10

External pyramidal cell layer

Question 11

What is gray matter layer IV

Answer 11

Internal granular layer

Question 12

What is gray matter layer V

Answer 12

• Ganglionic layer
  
  • Internal Pyramidal cells

Question 13

What is gray matter layer VI

Answer 13

Multiform cell layer

Question 14

What is this structure?

Answer 14

Cerebral cortex

H&E stain

Question 15

What is this structure

Answer 15

Cerebral cortex

luxol blue stain

Question 16

What is Neuropil?

Answer 16

• Meshwork of tissue in grey matter excluding the cell bodies
• Comprised of dendritic and axonal processes and central glial cells

Question 17

Describe the structure of the cerebellar cortex

Answer 17

• Grey Matter
  
  • Outer portion
  • cell bodies arranged in layers
• White matter
  
  • Inner core
  • axon travel to other parts of the CNS
  • Axon forms tracts

Question 18

Identify this structure

Answer 18

Cerebellar cortex

Question 19

Identify the specified structure

Answer 19

Purkinje Fibers

Question 20

What is the specified structure?

Answer 20

Purkinje Cells

Question 21

General structure of gray and white matter in the spinal cord.

Answer 21

White matter on the outside, Gray matter on the inside

Question 22

The two types of gray matter in the spinal cord?

Answer 22

Dorsal horn and Ventral horn,

Upside down butterfly looking shape

Question 23

Dura Mater

Answer 23

Outer covering

Dense connective Tissue

Vascular

innervated

Question 24

Arachnoid Mater

Answer 24

Loose connective tissue

lined with simple squamous epithelium

Projects into the sinus to dain CSF into the Bloodstream

AVASCULAR

Question 25

Pia mater

Answer 25

Vascular loose connective tissue lies directly on brain and spinal cord Interact with epindymal cells to form choroid plexus

Question 26

Overview of Meninges(dura,aracnoid,and pia)

Answer 26

Question 27

Histology Overview of Meninges(dura,aracnoid,and pia)

Answer 27

Question 28

Histology(H&E) Overview of Meninges(dura,aracnoid,and pia)

Answer 28

Question 29

What is an Alpha Motor/Golgi nueron and where is it located?

Answer 29

Large cell with pale staining large nuclei abundant nissl bodies embedded in neuropil * Located in the ventral horn

Question 30

what is the structure that the arrow is pointing to?

Answer 30

Alpha motor neurons

Question 31

What is the function of Granule cells?

Answer 31

They carry excitatory signals to the cerebellum.

Question 32

Function of the blood brain barrier

Answer 32

Protect the CNS from imbalances in surrounding environment as well as electrolytes, hormones, metabolites disturbances

Question 33

Organization of Blood brain barrier

Answer 33

* Continuous with capillaries * complex tight junctions between endothelial cells * continous basal lamina * no fenestrations(openings) in basal lamina * Foot process of Astrocytes