Nervous Tissue

Question 1

the ability to produce action potential in response to

a stimulus

Answer 1

excitability

Question 2

the ability to propagate action potential along the

neural membrane

Answer 2

Conductivity

Question 3

Axons conduct action potentials ____ the cell body.

Answer 3

away from

Question 4

Dendrites conduct action potentials ____ the cell body.

Answer 4

toward

Question 5

These are cells of support to the nerve cells and their processes.

Answer 5

NEUROGLIAL CELLS

Question 6

Ribosomes aggregate to form:

Answer 6

Nissl bodies

Question 7

How many processes does a unipolar or pseudounipolar neuron have and where can they be found?

Answer 7

1, spinal ganglia

Question 8

How many processes does a bipolar neuron have?

Answer 8

2

Question 9

What are the types of multipolar neurons?

Answer 9

Stellate, Pyramidal, Piriform, and Granule cells

Question 10

Where can stellate neurons be found?

Answer 10

Autonomic ganglia

Question 11

Where can pyramidal neurons be found?

Answer 11

Cerebral cortex

Question 12

Were can piriform neurons be found?

Answer 12

Cerebellum

Question 13

Where can granule cell neurons be found?

Answer 13

Cerebellum

Question 14

Golgi Type 1 cells have ____ axons.

Answer 14

long

Question 15

Golgi Type 2 cells have ____ axons.

Answer 15

short

Question 16

What are the three types of synaptic contacts?

Answer 16

Axosomatic, axodendritic, and axoaxonic

Question 17

The space in between a presynaptic element and a postsynaptic element is called the:

Answer 17

synaptic cleft

Question 18

What contains chemical neurotransmitter that is released under the effect of the presynaptic action potential?

Answer 18

synaptic vessicles

Question 19

Divide the myelin sheath into segments called internodal segments.

Answer 19

Nodes of Ranvier

Question 20

Nodes of Ranvier function as an _____ and also ______.

Answer 20

Insulator, speeds up conduction

Question 21

Speeding up of a nerve impulse is also called:

Answer 21

saltatory conduction

Question 22

Lies outside the myelin sheath and is made up of Schwann’s cells.

Answer 22

Neurolemma or Schwann’s Sheath

Question 23

The functions of neurolemma are:

Answer 23

regeneration of nerves, forms myelin sheath

Question 24

Naked nerve fibers contain no coverings and can be found in:

Answer 24

the CNS

Question 25

Myelinated neurons that do not have neurolemma can be found in:

Answer 25

the white matter of the CNS

Question 26

Neurons with neurolemma but no myelin can be found in:

Answer 26

autonomic nerves

Question 27

Neurons with neurolemma and myelin can be found in:

Answer 27

spinal nerves

Question 28

Neuroglia proper exist only in the:

Answer 28

CNA

Question 29

Modified neuroglia can be found in the:

Answer 29

CNS and PNS

Question 30

Star-shaped cells with multiple processes ending in perivascular feet over blood vessels. Form the blood/brain barrier:

Answer 30

Astrocytes

Question 31

These astrocytes are found in the gray matter of the CNS.

Answer 31

Protoplasmic astrocytes

Question 32

These astrocytes are found in the white matter of the CNS.

Answer 32

Fibrous astrocytes

Question 33

Astrocytes develop from the:

Answer 33

ectoderm

Question 34

round with few processes, found in both gray and white matters of C.N.S. They form myelin sheath around nerves and develop from ectoderm.

Answer 34

Oligodendroglia

Question 35

small spindle cells with processes at the poles. They are phagocytic cells arising from mesoderm and found in both gray and white matter of C.N.S.

Answer 35

Microglia

Question 36

Schwann cells surrounding cell bodies of neurons inside ganglia

Answer 36

Satellite cells

Question 37

columnar cells with some cilia, lining ventricles of the brain and central canal of spinal cord.

Answer 37

Ependymal cells