Nervous System

Question 1

_____ Nervous System coordinates automatic body functions. ____ Nervous System has voluntary control of skeletal muscles

Accepted Answer

Automomic, Somatic

Question 2

The CNS is composed of brain and spinal cord, and found along central axis of body.

Accepted Answer

True

Question 3

Sodium-Potassium pump located in the _________ of the neuron.

Accepted Answer

cell membrane

Question 4

Brief period during + after neuron has generated nerve impulse, it cannot generate another impulse. = Refractory Period

Accepted Answer

True

Question 5

term used for change of cells charge back to negative resting membrane potential.

Accepted Answer

repolarization

Question 6

stimulus strong enough to cause complete depolarization and to generate a nerve impulse.

Accepted Answer

Threshold stimulus

Question 7

The basic neuron structure inludes:

Accepted Answer

Cell body:soma or perikaryon, Two different types of cell processes:dendritesAxons

Question 8

Nerve cells ________ reproduce but _________ regenerate cell processes.

Accepted Answer

cannot, can

Question 9

Myelin sheath is made of cell membranes of:

Accepted Answer

Schwann cellsperipheral nerve fibers, Oligodendrocytesbrain & spinal cord

Question 10

make inside of cell more negative, moving the charge within the postsynaptic cell farther away from threshold.

Accepted Answer

Inhibitory neurotransmitters

Question 11

Endocrine System Responses are short lived.

Accepted Answer

False

Question 12

Efferent Nerve fibres are also called sensory nerves. Afferent Nerve fibres are also called motor nerves

Accepted Answer

False

Question 13

The axon process can be...

Accepted Answer

Very long and covered with myelin sheath

Question 14

Knowledge of the nervous system is important in many situations in the veterinary clinic: Select all that apply

Accepted Answer

Local and general anesthesia, Positioning animals, Traumatic injuries, Pain management

Question 15

Three things associated with Catecholamines

Accepted Answer

Dopamine - found in brain, Involved in autonomic functions & muscle control, Epinephrine - plays major role in fight of flight, but more as a hormone., Norepinephrine - associated with arousal & fight or flight reactions.

Question 16

Neurons have high requirement for oxygen and can’t live more than a few minutes without it.

Accepted Answer

True

Question 17

Neurons are also known as...

Accepted Answer

Nerve cells

Question 18

The Postsynaptic neuron contains receptors for the neurotransmitter.

Accepted Answer

True

Question 19

Cells and Tissues are targeted in:

Accepted Answer

Nervous System, Endocrine System

Question 20

gap between two adjacent neurons.

Accepted Answer

synaptic cleft

Question 21

At rest cells are...

Accepted Answer

electrically polarized

Question 22

Where is the Relative refractory period found?

Accepted Answer

during end of repolarization period

Question 23

What are the 2 main divisions of the Nervous system?

Accepted Answer

Central Nervous System, Peripheral Nervous System

Question 24

Nervous System Messengers = Hormones which are produced by endocrine glands or modified neurons

Accepted Answer

False

Question 25

either the complete neuron depolarizes to its maximum strength, or it does not depolarize at all.

Accepted Answer

All or nothing principle

Question 26

Depolarization in myelinated axons can only take place at the....

Accepted Answer

Nodes of Ranvier

Question 27

Dendrite Cell Processes - Tend to be short, numerous, and multi-branched.

Accepted Answer

True

Question 28

Most PNS nerves are mixed nerves

Accepted Answer

True

Question 29

have an excitatory effect on the postsynaptic membrane when they combine with their specific receptors.

Accepted Answer

Excitatory neurotransmitters

Question 30

branched structure at end of axon on presynaptic neuron.

Accepted Answer

telodendron

Question 31

Nervous System Responses are sustained for short periods of time.

Accepted Answer

True

Question 32

Communication and Control Systems - Select whats true

Accepted Answer

Endocrine system reacts slowly, Nervous system reacts quickly

Question 33

Absolute refractory period is....

Accepted Answer

no stimulus, no matter how strong can cause the cell to depolarize again.

Question 34

Nerve impulse is a wave of depolarization along the cell membrane of the entire neuron

Accepted Answer

True

Question 35

Continuation of the nerve impulse from one neuron to the next cell.

Accepted Answer

synaptic transmission

Question 36

Myelin is a sheath of ________ substance that covers axon.

Accepted Answer

fatty

Question 37

Functionally the nervous system’s activities fall into 3 main activities:

Accepted Answer

Sensory, Motor, Integrating

Question 38

Where is Gamma-aminobutyric acid (GABA) found?

Accepted Answer

brain

Question 39

Afferent processes...

Accepted Answer

Conduct this stimulation toward cell body.

Question 40

Acetylcholine can be Excitatory or inhibitory Neurotransmitters depending on location in body

Accepted Answer

True

Question 41

Where is Glycine found

Accepted Answer

spinal cord

Question 42

Saltatory Conduction is the...

Accepted Answer

Rapid means of conducting an action potential., each Na+ channel opening stimulates opening of adjacent channel

Question 43

Resting State is when a neuron is being stimulated

Accepted Answer

False

Question 44

Endocrine system targets:

Accepted Answer

tissuescells

Question 45

junction between two neurons or a neuron and a target cell.

Accepted Answer

Synapse

Question 46

term used for the significant change in electric charge from negative to positive.

Accepted Answer

Action Potential

Question 47

Select all thats true about Deporlarization

Accepted Answer

sodium ions flow into cell., neuron receives external stimulus., charge now positive inside cell

Question 48

Small gaps in the myelin sheath called....

Accepted Answer

Nodes of Ranvier

Question 49

brings nerve impulse to the synapse & releases the neurotransmitter to stimulate the next cell.

Accepted Answer

Presynaptic neuron

Question 50

Central Nervous System is composed of:

Accepted Answer

Spinal Cord, Brain

Nervous System

Questions 50

Nervous System

Questions 50