Exercise 15: Histology of Nervous Tissue

Question 1

The basic functional unit of the nervous system is the neuron. What is the major function of this cell type?

Answer 1

To generate and transmit nerve impulses

Question 2

The definition for: the brain and spinal cord collectively is?

Answer 2

Central nervous system

Question 3

The definition for: specialized supporting cells in the nervous system is?

Answer 3

Neuroglia

Question 4

The definition for: junction or point of close contact between neurons is?

Answer 4

Synaptic cleft

Question 5

The definition for: a bundle of axons inside the PNS is?

Answer 5

Nerve

Question 6

The definition for: neuron serving as part of the conduction pathway between sensory and motor neurons is?

Answer 6

Interneuron

Question 7

The definition for: ganglia and spinal and cranial nerves is?

Answer 7

Peripheral nervous system

Question 8

The definition for: collection of neuron cell bodies found within the CNS is?

Answer 8

Ganglion

Question 9

The definition for: neuron that conducts impulses away from the CNS to muscles and glands is?

Answer 9

Efferent neuron

Question 10

The definition for: neuron that conducts impulses toward the CNS from the body periphery is?

Answer 10

Afferent neuron

Question 11

The definition for: chemicals released by neurons that stimulate or inhibit other neurons or effectors is?

Answer 11

Neurotransmitters

Question 12

The definition for: collection of neuron cell bodies found in the PNS is?

Answer 12

Nucleus

Question 13

The definition for: bundle of axons inside the CNS is?

Answer 13

Tract

Question 14

What is the atomically term for: region of the cell body from which the axon originates

Answer 14

Axon hillock

Question 15

What is the atomically term for: secretes neurotransmitters

Answer 15

Axon terminal

Question 16

What is the atomically term for: receptive regions of a neuron

Answer 16

Dendrite

Question 17

What is the atomically term for: insulates the nerve fibers

Answer 17

Myelin sheath

Question 18

What is the atomically term for: site of the nucleus and most important metabolic area

Answer 18

Cell body

Question 19

What is the atomically term for: involved in the transport of substances within the neuron

Answer 19

Neurofibril

Question 20

What is the atomically term for: essentially rough endoplasmic reticulum, important metabolically

Answer 20

Chromatophilic substance

Question 21

What is the atomically term for: impulse generator and transmitter

Answer 21

Axon

Question 22

What substance is found in synaptic vesicles of the axon terminal?

Answer 22

Neurontransmitter

Question 23

What anatomical characteristic determines whether a particular neuron is classified as unipolar, bipolar, or multipolar?

Answer 23

The number of process issuing from the cell body

Question 24

What is a nerve?

Answer 24

A bundle of axons wrapped in connective tissue

Question 25

What is the location of this connective tissue: endoneurium?

Answer 25

Surrounds axon

Question 26

What is the location of this connective tissue: perineurium?

Answer 26

Surrounds a bundle of axons

Question 27

What is the location of this connective tissue: epineurium?

Answer 27

Surrounds all of the axons contributing to a nerve

Question 28

What is the function of the connective tissue wrappings found in a nerve?

Answer 28

To protect and insulate the nerve fibers

Question 29

Define mixed nerve

Answer 29

Nerve containing both motor (efferent) and sensory (afferent) fibers