BSC2087 Module 6 Quiz Latest 2021

Question 1 Chemicals released at the axon terminal are called:

1.Secretions

2. Neurotransmitters

3. Inhibitors

4. Neurons

Question 2 Which statement is true regarding neurons?

1. All axons have myelin sheaths surrounding them

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

3. They are only found in the central nervous system

4. Dendrites pass information from the neuron to another cell

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

1.            T

2.            F

Question 4Which portion of the neuron processes information?

1. Axon

2. Dendrites

3.Soma

4.Myelin

Question 5 Which choice is true regarding neuroglia cells?

1. Oligodendrocytes produce myelin sheaths

2. Schwann cells function are located in the central nervous system

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

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

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

1.            T

2.            F

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

1.            T

2.            F

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

1. Amino acids

2. Muscle contractor

3. Inhibitory

4. Biogenic Amines

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

1.            T

2.            F

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

1. False

2. True 

Question 11 Which statement is true regarding the neuron synapse?

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

2. The presynaptic and postsynaptic neuron membranes are not physically separated

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

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

Question 12 Which portion of the neuron receives information?

1. Axon

2. Dendrites

3. Myelin

4. Soma

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

1.False 

2. True

Question 14Which statement is true regarding neurons?

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

2. Neurotransmitters are released from the axon terminal(s)

3. The nucleus of the neuron is located in the axon

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

Question 15 The 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).

1.False

2. True

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

1. False

2. True

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

1. The repolarization phase must occur prior to depolarization

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

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

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

Question 18 Which statement is true regarding neurons?

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

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

3.Interneurons are found in both the central and peripheral nervous system

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

Question 19 Which choice is true regarding myelin sheaths?

1. Myelin sheaths cover dendrites in the central and peripheral nervous system

2. Myelin sheaths help release neurotransmitters from the axon terminal

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

4. Myelin sheaths are composed of astrocytes and satellite cells

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

1. Is typically only generated in the dendrite portion of a neuron

2.Neuroglia are solely responsible for creating action potentials

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

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

Question 21 Which statement is true regarding the nervous system?

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

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

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

4. Neurons can communicate with other cells without the use of neurotransmitters

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

1. True

2. False

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

1. Potassium

2. Sodium

3. Calcium

4. Magnesium

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

1.            T

2.            F

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

1. Transmits information from the central nervous system to the body

2. Pertains to sensory information/stimuli

3It is part of the central nervous system

4. Delivers information about the external environment to the brain