13

Question 1

Fast neurons as described in lecture are fast because they are surrounded by a type of glial cell that results in a myelin coating

Answer 1

FALSE

Question 2

The neural tissues are:

Answer 2

Spinal cord, sensory neurons, and brain

Question 3

The axon from a pre-synaptic cell contacts the axon of another neuron

Answer 3

FALSE

Question 4

The central nervous system (CNS) contains

Answer 4

NO CORRECT ANSWER

Question 5

Potassium ions are at high concentrations inside of cells including in neurons

Answer 5

TRUE

Question 6

The terminal web:

Answer 6

is a site of exocytosis

Question 7

The post-synaptic cell can be:

Answer 7

In glands, muscle cells, neurons

Question 8

How do the glial cells (i.e., myelin sheath) speed up the firing of neurons

Answer 8

By wrapping tightly around the axon which causes depolarization to jump from space to space between the glial cells

Question 9

Excitatory synapses make the post-synaptic cell less likely to fire

Answer 9

FALSE

Question 10

Only pre-synaptic neurons are coated with myelin

Answer 10

FALSE

Question 11

Draw an action potential in the axon of a neuron and indicate which ions flow into the neuron and out of the neuron as the action potential passes at the point where the electrodes are in the cell. Be sure to assign on the Y-axis the mV of each of these areas. This should be as described in my lectures

Question 12

The autonomic nervous system contains the sympathetic and the parasympathetic nervous system

Answer 12

TRUE

Question 13

The cell body refers to the part of the neurons that begin at the dendrites and extend to the axon terminal.

Answer 13

FALSE

Question 14

The action potential is

Answer 14

A result of the movement of ions.

Question 15

The receptors in post-synaptic cells are the basis on which the synapse can be defined as inhibitory or excitatory.

Answer 15

FALSE

Question 16

Acetylcholine esterase breaks acetylcholine into muscarinic acid

Answer 16

FALSE

Question 17

The resting potential of neurons is:

Answer 17

The answer is not on this list.

Question 18

Excitatory synapses cause depolarization of the post-synaptic cell

Answer 18

TRUE

Question 19

Receptors are made from membrane-bound polyribosomes

Answer 19

TRUE

Question 20

Draw a neuron, and label all the parts as described in lecture

Question 21

The axon hillock in the pre-synaptic neuron fires based on temporal and spatial summation of inputs.

Answer 21

TRUE

Question 22

When the presynaptic cell contacts a muscle cell, the synapse area is called a motor end plate.

Answer 22

TRUE

Question 23

Excitatory synapses cause hyperpolarization of post-synaptic cells

Answer 23

FALSE

Question 24

List the 4 types of glial cells and list a phrase to describe their function.

Answer 24

• Microglia: cleans up cellular debris
• Astrocytes: support and repair neurons
• Schwann Cells: myelinates axons of the neurons in the PNS
• Satellite: form the brain-blood barrier within the CNS

Question 25

Fast neurons as described in lecture require cytoplasmic signal transduction to open an ion channel.

Answer 25

FALSE

Question 26

In the motor end plate, the event that is the immediate trigger for exocytosis is:

Answer 26

Calcium ions.

Question 27

The membrane potential (resting potential) is largely set by the Na-K- ATPase pump

Answer 27

TRUE

Question 28

Voltage-gated ion channels open when a protein binds to the receptor

Answer 28

FALSE

Question 29

Briefly explain why the action potential flows only from the axon hillock to the terminal web

Answer 29

The action potential originates from the axon hillock which initiates the flow of the action potential because of the presence of higher density voltage-gated ion channels.

Question 30

Acetylcholine exocytosed from the presynaptic cell travels to the postsynaptic cell to start the action potential in the postsynaptic cel

Answer 30

TRUE