WorksheetsNerve Impulse Sequence
Total questions: 15
Worksheet time: 15mins
What generates a nerve impulse on the post-synaptic membrane?
Calcium binding with a receptor site
Potassium leaking into the post-synaptic membrane
Neurotransmitter binding with receptor sites
Neurotransmitter being removed from the synapse
In a simple reflex arc, what is the correct sequence of components?
Sensory neuron → Interneuron → Motor neuron
Motor neuron → Sensory neuron → Interneuron
Interneuron → Motor neuron → Sensory neuron
Sensory neuron → Motor neuron
What is being identified with the arrows?
calcium channels
neurotransmitters
receptors
vesicles
What is the advantage of reflex actions?
They allow for quick responses to stimuli without conscious thought
They help in complex decision-making processes
They only occur in animals with advanced nervous systems
They are under voluntary control
Diagram shows three types of nerve cells,P,Q and R.
Which of the following is the correct sequence of impulses transfer?
P -> Q -> R
P -> R -> Q
R -> P -> Q
R -> Q -> P
which of the following is not true about the importance of sinapse
make sure the transmission of impulse is one way
avoid the back flow of impulse
make sure the impulses are transmit from dendrite of a neurone to axon terminals of another neurone
Identify the name of the white insulating substance that often covers the axon of a neuron and helps speed up the conduction of the message
MYELIN
NEROTRANSMITTER
SYNAPSE
VESICLE
What is the first step in the sequence of a nerve impulse?
Resting potential is established
Action potential is generated
Neurotransmitter is released
Repolarization occurs
Which ion is primarily responsible for the depolarization phase of a nerve impulse?
Sodium (Na+)
Potassium (K+)
Calcium (Ca2+)
Chloride (Cl-)
During a nerve impulse, what happens immediately after the action potential reaches the axon terminal?
Neurotransmitters are released into the synaptic cleft
The axon returns to resting potential
The impulse is transmitted back to the cell body
The axon becomes hyperpolarized
What role do neurotransmitters play in the nerve impulse sequence?
They generate electrical signals in the axon
They transmit signals across the synapse
They insulate the axon
They provide energy for the neuron
In the context of nerve impulses, what is the refractory period?
A period when the neuron is hyperactive
A period when the neuron cannot fire another action potential
A period of increased neurotransmitter release
A period of synaptic vesicle formation
Which of the following best describes the sequence of events in a nerve impulse?
Resting potential → Depolarization → Repolarization → Hyperpolarization
Depolarization → Resting potential → Hyperpolarization → Repolarization
Repolarization → Depolarization → Resting potential → Hyperpolarization
Hyperpolarization → Depolarization → Repolarization → Resting potential
What is the function of the myelin sheath in nerve impulse transmission?
It slows down the transmission of impulses
It speeds up the transmission of impulses
It generates the nerve impulse
It stores neurotransmitters
How does the synaptic cleft contribute to the nerve impulse sequence?
It allows direct electrical transmission between neurons
It prevents neurotransmitter release
It is the space where neurotransmitters are released to transmit signals
It insulates the axon from other neurons
