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WorksheetsNeurone and Nerve Impulse Transmission Worksheet
Total questions: 21
Worksheet time: 11mins
What is the primary function of dendrites in a neurone?
To transmit signals away from the cell body
To receive signals and conduct them to the cell body
To store neurotransmitters
To produce the myelin sheath
What is the name of the fatty covering around an axon?
Axon terminal
Synaptic cleft
Myelin sheath
Node of Ranvier
Which structure in a neurone speeds up the transmission of impulses?
Dendrites
Nodes of Ranvier
Cell body
Synapse
What is the role of the synapse in nerve impulse transmission?
To store calcium ions
To insulate the axon
To transmit signals across a gap between neurones
To generate action potentials
What type of ions are responsible for nerve impulse transmission?
Sodium and potassium
Calcium and magnesium
Chloride and bicarbonate
Hydrogen and oxygen
What is the term used for the electrical signals conducted by neurones?
Synaptic potentials
Action potentials
Resting potentials
Excitatory inputs
Where are neurotransmitters stored before their release?
In the nucleus
In axon terminals
In synaptic vesicles
What triggers the release of neurotransmitters into the synaptic cleft?
Arrival of an action potential
Closing of ion channels
Increase in sodium ion concentration
Inhibition of the post-synaptic membrane
What happens when neurotransmitters bind to receptors on the post-synaptic membrane?
Vesicles are formed
Ion channels may open or close
Potassium ions are released
The myelin sheath is repaired
What is the term for the gap between two neurones?
Axon terminal
Synaptic cleft
Node of Ranvier
Dendritic gap
What is the primary role of the myelin sheath?
To produce neurotransmitters
To insulate and speed up signal transmission
To release calcium ions
To conduct signals across the synapse
Which ions enter the neurone when calcium channels open?
Sodium ions
Potassium ions
Calcium ions
Chloride ions
What happens at the Node of Ranvier?
Neurotransmitters are stored
Action potentials are accelerated
Calcium channels close
Vesicles fuse with the membrane
What is the primary component of the myelin sheath?
Proteins
Lipids
Carbohydrates
Calcium
What is the role of synaptic vesicles?
To generate action potentials
To store neurotransmitters
To conduct signals to the axon
To produce the myelin sheath
What type of neurone conducts signals to muscles?
Sensory neurones
Motor neurones
Interneurones
Post-synaptic neurones
Which part of the neurone contains the nucleus?
Axon
Cell body
Dendrites
Node of Ranvier
What does the term 'action potential' refer to?
The resting state of a neurone
The electrical signal conducted by a neurone
The release of neurotransmitters
The inhibition of the synapse
Which structure is NOT part of a neurone?
Synapse
Axon
Myelin sheath
Mitochondria
What is the silver appearance of nerves in the PNS due to?
High concentration of neurotransmitters
Presence of myelinated axons
Abundance of dendrites
(Other options and the question stem are missing from the image.)
A. Low calcium content
B. Moderate calcium content
C. High calcium content
D. Very low calcium content
