Lesson: Nervous Part 1 - 8.1 Questions

Question 1

Function: ___________________ collect information such as pain, touch, blood pressure, and so forth so they can tell the CNS what is going on in the PNS.

Answer 1

Sensory receptors

Question 2

Define: Node of Ranvier.

Answer 2

The space between two segments of the myelin sheath.

Question 3

Function: _______________ in the CNS and process, store, and make decisions.

Answer 3

Interneurons

Question 4

Function: _______________ neurons are responsible for taking messages from the CNS to the organs.

Answer 4

Efferent (motor)

Question 5

Function: Axons of neurons __________________________.

Answer 5

Carry (transmit) nerve messages to other neurons, muscles or glands.

Question 6

Function: Dendrites are responsible ________________.

Answer 6

For receiving signals from receptors or other neurons.

Question 7

Function: Integration (the putting together of all information received) is accomplished by the ____________.

Answer 7

Central Nervous System

Question 8

Function: One of the nervous system’s functions is to have the ability to respond to stimuli from the skin and other body organs. This function is called:

Answer 8

Sensory

Question 9

Function: One of the nervous system’s functions is to receive and process information, store and retrieve it and make decisions as to how to respond to it. This function is called:

Answer 9

Integrative

Question 10

Function: One of the nervous system’s functions is to send signals from the brain to the muscle and gland cells to respond. This function is called:

Answer 10

Motor

Question 11

Function: Schwann cells produce _________________.

Answer 11

Myelin sheaths in the PNS.

Question 12

Function: The axon terminal’s function is __________________________.

Answer 12

To send chemical signals to a muscle cell, gland or another neuron.

Question 13

Function: The skin has special ________________ for thermoregulation (homeostasis for temperature regulation).

Answer 13

Sensory receptors

Question 14

Function: What type of neuron can detect stimuli and transmit information about the stimuli to the CNS?

Answer 14

Afferent (Sensory) neurons

Question 15

Function: What type of neuron can detect stimuli and transmit information about the stimuli to the CNS?

Answer 15

Afferent (Sensory) neurons

Question 16

Location: At the distal end of a neuron one will find

Answer 16

Axon terminals (synaptic knobs)

Question 17

Location: DNA is found in the________________

Answer 17

Nucleus of a cell.

Question 18

Location: In a myelinated PNS nerve fiber, there is a large concentration of voltage gated channels located at the _______________.

Answer 18

Nodes of Ranvier

Question 19

Location: Interneurons are ONLY found in the ________________.

Answer 19

CNS

Question 20

Location: neurotransmitters are stored in __________________.

Answer 20

Synaptic vesicles

Question 21

Location: Schwann cells are found in the __________.

Answer 21

PNS.

Question 22

Location: The axon hillock is found between the __________ and ______________.

Answer 22

Cell body (soma) and the axon.

Question 23

Location: The nucleus of a neuron is found in the ________________________.

Answer 23

In the cell body (soma)

Question 24

Name: The axons of a neuron are also called ___________________.

Answer 24

Nerve fibers

Question 25

Name: The other name for the cell body is _____________.

Answer 25

A neurosoma or soma

Question 26

Nodes of Ranvier are associated with

Answer 26

Myelination.

Question 27

Organelle: A neuron cannot undergo mitosis because it lacks ________________.

Answer 27

Centrioles

Question 28

Organs: What two organs form the CNS?

Answer 28

Brain and spinal cord.

Question 29

Sensory receptors send nerve messages via (by way of) ______________________ to the CNS?

Answer 29

Afferent (Sensory) neurons

Question 30

Spinal motor neurons connect:

Answer 30

the brain to skeletal muscles,

Question 31

The Central Nervous System makes a decision to change something, thus it will send a message to the organ(s) of the peripheral nervous system by the (via) ____________________.

Answer 31

Efferent (Motor) neurons

Question 32

The normal direction of a nerve message in a neuron is:

Answer 32

Dendrites to cell body to axon

Question 33

The PNS is made of:

Answer 33

The nerves leading to and from the CNS

Question 34

TRUE or FALSE? The PNS is sensory only.

Answer 34

False. The PNS has both sensory and motor functions.

Question 35

TRUE or FALSE? There are no nerves in the brain and spinal cord.

Answer 35

TRUE. In the CNS, a bundle of nerve fibers is called a tract.

Question 36

What happens at a synapse?

Answer 36

One neuron sends a chemical message by using a neurotransmitter to another neuron.

Question 37

What type of neurons brings information from the organs of the body to the Central Nervous System?

Answer 37

Afferent (Sensory) neurons

Question 38

Location: Astrocytes are located in the ___________.

Answer 38

CNS

Question 39

Location: Oligodendrocytes are located in the ___________.

Answer 39

CNS

Question 40

Location: Microglia are located in the ___________.

Answer 40

CNS

Question 41

Location: Ependymal are located in the ___________.

Answer 41

CNS

Question 42

Name: Neuroglia cells are also called ____________.

Answer 42

Glial cells

Question 43

Function: Microglial cells wander through the CNS looking for infectious microorganisms and tissue debris. These cells specialize in a process called ______________.

Answer 43

Phagocytosis

Question 44

Function: Cuboidal cells that line the fluid-filled cavities of the CNS are called _____________.

Answer 44

Ependymal

Question 45

Function: Ependymal cells specialize in producing what fluid?

Answer 45

Cerebrospinal fluid (CSF)

Question 46

Function: An “octopus-like” cell in the CNS that insulates neurons in the CNS with a myelin sheath is called a _________________.

Answer 46

Oligodendrocyte

Question 47

Function: What neuroglial cell acts like pillars to hold up neurons in the CNS?

Answer 47

Astrocytes

Question 48

Function: What neuroglial cell attaches blood vessels to neurons and thus forms the blood-brain barrier?

Answer 48

Astrocytes

Question 49

Function: What neuroglial cell forms scar tissue in damaged areas of the CNS?

Answer 49

Astrocytes

Question 50

Location: What is found between the soma of a neuron and the axon?

Answer 50

The axon hillock

Question 51

Define: Synapse

Answer 51

In this class we are using it as a junction formed between two neurons.

Question 52

Function: Cilia are found on ependymal cells. What is one of the functions of the ependymal cells?

Answer 52

Cilia produce wave-like movement to move cerebrospinal fluid in the CNS.

Question 53

Function: Damage to neurons in the PNS may be fixed due to what neuroglial cell?

Answer 53

Schwann cells

Question 54

TRUE or FALSE? The PNS connects the CNS to the body’s sense organs, muscles and glands.

Answer 54

TRUE