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Question
Label the parts (a), (b), (c) and (d) and show the direction of flow of electrical signals in the given figure.
Solution
- Sensory neuron
- Spinal cord
- Motor neuron
- Muscle (Effector)
The direction of the flow of electrical signals:
Receptor in hand → Sensory neuron → Spinal cord → Motor neuron → Muscles in arm.
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RELATED QUESTIONS
A part of the body which responds to the instructions sent from the nervous system is called ____________.
Assertion: Reflex Arc works faster than the thinking process of the brain.
Reason: Reflex Arc works in the case of those animals who do not have a thinking process.
Which is the correct sequence of the components of a reflex arc?
Which of the following statements are true?
- Sudden action in response to something in the environment is called reflex action
- Sensory neurons carry signals from spinal cord to muscles
- Motor neurons carry signals from receptors to spinal cord
- The path through which signals are transmitted from a receptor to a muscle or a gland is called reflex arc
What are reflex actions? Give two examples. Explain a reflex arc.
Which one is NOT a reflex action?
Sensory nerve of a reflex arc carries information from the receptor cells to the ______.
Arrange and rewrite the terms in the group in the correct order to be in a logical sequence beginning with the term that is underlined:
Receptor, Response, Effector, Spinal Cord.
Arrange and rewrite the terms in group in the correct order to be in a logical sequence, beginning with the term that is underlined:
Effector, Receptor, Motor neuron, Sensory neuron.
Name the type of nerve which has the fibres of both sensory and motor neurons.
