Rasmussen BSC2087 Module 6 Quiz Latest 2021 October

BSC2087 Human Anatomy and Physiology I

Module 6 Quiz  

Question 1Chemicals released at the axon terminal are called:

Secretions

Neurotransmitters

Inhibitors

Neurons

Question 2Which statement is true regarding neurons?

All axons have myelin sheaths surrounding them

The action potential is transmitted from the cell body to the axon terminal

They are only found in the central nervous system

Dendrites pass information from the neuron to another cell

Question 3Inhibitory synapses cause depolarization, leading to the possibility of an action potential formation.

True

False

Question 4Which portion of the neuron processes information?

Axon

Dendrites

Soma

Myelin

Question 5Which choice is true regarding neuroglia cells?

Oligodendrocytes produce myelin sheaths

Schwann cells function are located in the central nervous system

The majority of neuroglia cells are found in the peripheral nervous system

Astrocyte cells protect the neurons by acting almost like an immune cell

Question 6During an action potential, positive ions move into the cell as the depolarization spreads down the axon.

True

False

Question 7An action potential can only be propagated along a myelinated axon.

True

False

Question 8Dopamine is categorized as which structural type of neurotransmitter?

Amino acids

Muscle contractor

Inhibitory

Biogenic Amines

Question 9As long as neurotransmitters are bound to a receptor, ion channels remain open.

True

False

Question 10The generation or creation of an action potential depends on the strength of the stimulus a neuron receives. 

False

True 

Question 11Which statement is true regarding the neuron synapse?

The binding of a neurotransmitter always causes an excitatory effect on that cell, never inhibitory

The presynaptic and postsynaptic neuron membranes are not physically separated

Binding of a neurotransmitter on the postsynaptic neuron membrane can generate an action potential in that neuron

The human body only uses one type of neurotransmitter in all of its synapses

Question 12Which portion of the neuron receives information?

Axon

Dendrites

Myelin

Soma

Question 13During relative refractory period, a neuron cannot create another action potential to a stimulus no matter how strong or intense that stimulus is.

False 

True

Question 14Which statement is true regarding neurons?

Myelin sheaths provide protection to the axons but slow the nerve impulse (action potential) through it

Neurotransmitters are released from the axon terminal(s)

The nucleus of the neuron is located in the axon

Both the axons and dendrites receive information from other neurons and cells

Question 15The resting membrane potential of a neuron, specifically in the axon, is more negatively charged inside when compared to the extracellular space (outside of the cell).

False

True

Question 16The autonomic nervous system is a sub-division of sensory (afferent) division?

False

True

Question 17Which statement is true regarding the action potential process?

The repolarization phase must occur prior to depolarization

Depolarization occurs because voltage gated K+ channels allow K+ ions to rush into the cell

The action potential process only occurs at the nodes of Ranvier in myelinated axons

Hyperpolarization allows for Na+ and K+ ions to move into and out of the cell

Question 18Which statement is true regarding neurons?

Motor (efferent) neurons transmit information from one muscle to another muscle

Sensory (afferent) and Motor (efferent) neurons are considered part of the peripheral nervous system

Interneurons are found in both the central and peripheral nervous system

Sensory (afferent) neurons transmit information from the brain to muscles

Question 19Which choice is true regarding myelin sheaths?

Myelin sheaths cover dendrites in the central and peripheral nervous system

Myelin sheaths help release neurotransmitters from the axon terminal

Myelin sheaths allow for the conduction of nerve impulses (action potentials) to be transmitted faster

Myelin sheaths are composed of astrocytes and satellite cells

Question 20Which statement is true regarding action potentials (nerve impulses)?

Is typically only generated in the dendrite portion of a neuron

Neuroglia are solely responsible for creating action potentials

When action potentials reach the axon terminal, they cause the release of neurotransmitters 

An action potential moves from the axon to the soma of a neuron

Question 21Which statement is true regarding the nervous system?

Damaged myelin on an axon has no effect with its ability to transmit an action potential  

Depolarization is the reduction of the membrane potential; going from negative to a more positive charge

Neuroglia cells are only responsible for providing immunity to the nervous cells

Neurons can communicate with other cells without the use of neurotransmitters

Question 22During the repolarization phase of an action potential, the neuron begins to regain its negative internal charge.

True

False

Question 23Which of the following ions rushes into the axon terminal, causing the release of neurotransmitters into the synaptic cleft?

Potassium

Sodium

Calcium

Magnesium

Question 24Action potential is unique to neurons and muscle cells. Other body cells do not use this process.

True

False

Question 25Which statement is true regarding the motor (efferent) division of the nervous system?

 Transmits information from the central nervous system to the body

2.           

Pertains to sensory information/stimuli

3.           

It is part of the central nervous system

4.           

Delivers information about the external environment to the brain