Class 10 Exam > Class 10 Videos > Reflex Arc - Life Processes, Class 10 Science
Reflex Arc - Life Processes, Class 10 Science Video Lecture
FAQs on Reflex Arc - Life Processes, Class 10 Science Video Lecture
| 1. What is a reflex arc? |  |
Ans. A reflex arc is a neural pathway that controls an involuntary and rapid response to a stimulus. It involves sensory neurons, interneurons, and motor neurons that work together to transmit signals and produce a reflex action. This pathway bypasses the brain and allows for a quick response to protect the body from potential harm.
| 2. How does a reflex arc work? | |
Ans. A reflex arc works by following a specific sequence of events. When a stimulus is detected by a sensory receptor, such as touching a hot object, the sensory neuron sends an electrical signal to the spinal cord. In the spinal cord, the signal is relayed to an interneuron, which quickly processes the information. The interneuron then sends a signal to the motor neuron, which activates the appropriate muscles to produce a reflex action, such as pulling the hand away from the hot object.
| 3. What are the components of a reflex arc? | |
Ans. The components of a reflex arc include sensory neurons, interneurons, and motor neurons. The sensory neurons detect the stimulus and transmit the signal to the spinal cord. The interneurons are located in the spinal cord and process the information received from the sensory neurons. Finally, the motor neurons receive signals from the interneurons and stimulate the appropriate muscles to produce a reflex action.
| 4. Can reflex actions be controlled consciously? | |
Ans. No, reflex actions cannot be consciously controlled. They are involuntary and automatic responses that occur without conscious thought. Reflex arcs bypass the brain and involve the spinal cord and peripheral nerves to produce a rapid response. However, reflex actions can be modulated or inhibited to some extent by higher brain centers, such as when you consciously decide not to withdraw your hand from a hot object.
| 5. What is the importance of reflex actions? | |
Ans. Reflex actions are important for the survival and protection of an organism. They allow for quick responses to potential threats or harmful stimuli without the need for conscious processing. Reflex actions help prevent injuries, such as pulling your hand away from a hot surface or blinking to protect your eyes from sudden bright light. They are essential for maintaining homeostasis and ensuring the body's safety in various situations.
Text Transcript from Video
reflex action lens reflex arc whenever
we happen to come close to an object
that is capable of harming us we
immediately withdraw the part of the
body that is the most vulnerable this is
called reflex action when a person
touches a hot cup the sensory receptors
in the hand send a stimulus via the
afferent pathway which contains afferent
neurons to the spinal cord the afferent
neurons enter the dorsal nerve root of
the spinal cord the stimulus is passed
on to the efferent neuron which travels
the efferent pathway to reach the
effector organ in this case the muscles
of the arm as a result the hand is
quickly pulled back the brain is not
involved in the reflex actions as it
would take more time for the impulses to
travel to and fro from the brain
the afferent neurons or receptors taking
the causal stimulus to the CNS the
spinal cord the efferent neurons or
effectors the exciter neurons and the
action performed in response to the
stimulus together form the reflex arc
we happen to come close to an object
that is capable of harming us we
immediately withdraw the part of the
body that is the most vulnerable this is
called reflex action when a person
touches a hot cup the sensory receptors
in the hand send a stimulus via the
afferent pathway which contains afferent
neurons to the spinal cord the afferent
neurons enter the dorsal nerve root of
the spinal cord the stimulus is passed
on to the efferent neuron which travels
the efferent pathway to reach the
effector organ in this case the muscles
of the arm as a result the hand is
quickly pulled back the brain is not
involved in the reflex actions as it
would take more time for the impulses to
travel to and fro from the brain
the afferent neurons or receptors taking
the causal stimulus to the CNS the
spinal cord the efferent neurons or
effectors the exciter neurons and the
action performed in response to the
stimulus together form the reflex arc
About this Video
1.1K Views
4.82/5
Rating
Sep 20, 2025
Last updated
Related Exams
Reflex Arc - Life Processes, Class 10 Science for Class 102025 is part of Class 10 preparation. The notes and questions for Reflex Arc - Life Processes, Class 10 Science
have been prepared according to the Class 10 exam syllabus. Information about Reflex Arc - Life Processes, Class 10 Science covers all important topics
for Class 102025 Exam. Find important definitions, questions, notes, meanings, examples, exercises
and tests below for Reflex Arc - Life Processes, Class 10 Science.
Introduction of Reflex Arc - Life Processes, Class 10 Science in English is available as part of our Class 10 preparation & Reflex Arc - Life Processes, Class 10 Science in Hindi
for Class 10 courses. Download more important topics, notes, lectures and mock test series for Class 10 Exam by
signing up for free.
Description
Video Lecture & Questions for Reflex Arc - Life Processes, Class 10 Science Video Lecture - Class 10 full syllabus preparation | Free video for Class 10 exam.
Information about Reflex Arc - Life Processes, Class 10 Science
Here you can find the Reflex Arc - Life Processes, Class 10 Science defined & explained in the simplest way possible. Besides explaining types of Reflex Arc - Life Processes, Class 10 Science
theory, EduRev gives you an ample number of questions to practice Reflex Arc - Life Processes, Class 10 Science tests, examples and also practice Class 10 tests.
Related Searches
Class 10 Science Video Lecture
,Exam
,shortcuts and tricks
,practice quizzes
,ppt
,Class 10 Science Video Lecture
,MCQs
,mock tests for examination
,Objective type Questions
,video lectures
,past year papers
,Viva Questions
,Free
,Sample Paper
,Reflex Arc - Life Processes
,study material
,Summary
,Important questions
,Extra Questions
,Class 10 Science Video Lecture
,Reflex Arc - Life Processes
,Reflex Arc - Life Processes
,Previous Year Questions with Solutions
,Semester Notes
;
Study Reflex Arc - Life Processes, Class 10 Science on the App
Students of Class 10 can study Reflex Arc - Life Processes, Class 10 Science alongwith tests & analysis from the EduRev app,
which will help them while preparing for their exam. Apart from the Reflex Arc - Life Processes, Class 10 Science,
students can also utilize the EduRev App for other study materials such as previous year question papers, syllabus, important questions, etc.
The EduRev App will make your learning easier as you can access it from anywhere you want.
The content of Reflex Arc - Life Processes, Class 10 Science is prepared as per the latest Class 10 syllabus.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup