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Reflex Arc

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Topics

  • Definition: Reflex Arc
  • Key Points: Reflex Arc
CISCE: Class 10

Definition: Reflex Arc

A reflex arc is the shortest route that can be taken by an impulse from a receptor to an effector.

CISCE: Class 10

Key Points: Reflex Arc

  1. Reflex arc is the shortest path taken by a nerve impulse from a receptor to an effector.
  2. It includes five components: receptor, sensory neuron, CNS, motor neuron, and effector.
  3. The receptor detects the stimulus and sends the impulse to the sensory neuron.
  4. The CNS processes the impulse and sends it through the motor neuron.
  5. The effector (muscle or gland) carries out the response.
 

Related QuestionsVIEW ALL [14]

Junction between two neurons is called

Which is the correct sequence of the components of a reflex arc?

Which of the following statements are true?

  1. Sudden action in response to something in the environment is called reflex action
  2.  Sensory neurons carry signals from spinal cord to muscles
  3. Motor neurons carry signals from receptors to spinal cord
  4. The path through which signals are transmitted from a receptor to a muscle or a gland is called reflex arc

Label the parts (a), (b), (c) and (d) and show the direction of flow of electrical signals in the given figure.

 

A part of the body which responds to the instructions sent from the nervous system is called ____________.

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.

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.

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