Neurons (Grade 12 NSC Matric Life Sciences): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What type of signals do neurons transmit?
What type of signals do neurons transmit?
Electrical signals called nerve impulses
In which direction do dendrites carry nerve impulses?
In which direction do dendrites carry nerve impulses?
Towards the cell body
What is the main role of the cell body in a neuron?
What is the main role of the cell body in a neuron?
Control centre coordinating activities
Which direction does the axon carry nerve impulses?
Which direction does the axon carry nerve impulses?
Away from the cell body
How much faster can myelinated axons conduct impulses compared to unmyelinated ones?
How much faster can myelinated axons conduct impulses compared to unmyelinated ones?
Up to 100 times faster
Where do sensory neurons carry nerve impulses?
Where do sensory neurons carry nerve impulses?
From receptors towards the CNS
What do motor neurons carry impulses towards?
What do motor neurons carry impulses towards?
Effector organs like muscles and glands
Where are interneurons found?
Where are interneurons found?
Entirely within the CNS
What is the synaptic cleft?
What is the synaptic cleft?
A tiny gap between neurons
What do neurotransmitters do at a synapse?
What do neurotransmitters do at a synapse?
Diffuse across gap and bind to receptors