Nervous Tissue

Question 1

What sections are the ones with cell bodies?

Answer 1

CNS - Gray matter
PNS - Ganglia

White matter and nerves don’t have cell bodies.

Question 2

What type of neurons are the most abundant?

Answer 2

The multipolar neurons

1 Axon and more than one dendrite.

Question 3

Whta are the neurons found in sensory organs?

Answer 3

Bipolar neurons

1 axon and 1 dendrite

Vestibular-chroclea system

Question 4

What type of chromatin contaisn the nucleus of neurons?

Answer 4

Euchromatin

Uncondensed, active.

Question 5

What are Nissl bodies?

Answer 5

Structure in the soma of neurons containing RER and polyribosomes.

Question 6

The presence of dendritic spines, which increase the surface area available for synapse decreases because of…

Answer 6

Age and poor nutrition.

Question 7

Where is the ellectrical impulse generated?

Answer 7

In the Axon Hillock

Question 8

What type of stain do we have to use to differenciate neuroglial cells?

Answer 8

Gold and silver stainig.

Question 9

Which are the largest neuroglial cells?

Answer 9

Astrocytes

Question 10

Which cells are related with the formation of the blood-brain barrier?

Answer 10

Protoplasmic Astrocytes

Question 11

Which cells form the scar tissue (glial scar)?

Answer 11

Astrocytes

Question 12

Which astrocytes are found in gray matter and which ones are found in white matter?

Answer 12

Protoplasmic Astrocytes: Gray Matter
Fibrous Astrocytes: White Matter

Question 13

Which type of astrocytes have long, slender processes with few branches?

Answer 13

Fibrous astrocytes

Question 14

Of what protein are made the intermediate filaments?

Answer 14

Glial Fribilar Acidic Protein

Question 15

Which glial cells are necessary for the survival of neurons?

Answer 15

Oligodendrocytes

As they produce the myelin sheaths and protects the axons of neurons.

Question 16

True or False

Each Oligodendrocyte can myelinate several axons

Answer 16

TRUE

Question 17

Which are the phagocytic nueroglial cells?

Answer 17

Microglia

Question 18

What are the cells that move the cerebrospinal fluid with cilia?

Answer 18

The Ependymal Cells

Form the neuroepithelium.

Question 19

True or False

One Schwann cell can insulate several axons

Answer 19

FALSE

One Schwann cell can only insulita a SINGLE axon in a myelinated fiber.

Question 20

What type of synapse is faster?

Answer 20

The Electrical Synapse

Question 21

What type of synapse is most common?

Answer 21

The chemical synapse

Question 22

There is lots of vesicles in the …

Answer 22

Presynaptic membrane
Axon terminal

Question 23

How is the surface increased in the neuromuscular junction (motor end plate)?

Answer 23

With junctional folds.

Question 24

How are the gaps called between adjacent glial cells (Schwann cells)?

Answer 24

Nodes of Ranvier

Question 25

How are covered the nodes of Ranvier in the CNS?

Answer 25

It is covered by a foot plate of an astrocyte.

Question 26

Schwann cells in unmyelinated axons how many axons they can cover?

Answer 26

They can cover several axons.

Question 27

In what type of nerve fibers (Myelinated/Unmyelinated) the propagation of the impulse is faster?

Answer 27

In myelinated axons

As the impulses jump from one node of Ranvier to another.

Question 28

In the CNS unmyelinaed axons are enveloped by neuroglial cells (Oligodendrocytes)?

Answer 28

No

Question 29

What connective tissue layer forms the blood-nerve barrier?

Answer 29

The perineurium

Question 30

Which type of matter contains Neuronal cell bodies (soma)?

Answer 30

The gray matter