Questions and Answers
Which of the following is not a type of nerve? (Select all that apply)
The working together of the various organs of an organism in a systematic manner to produce a proper response to a stimulus is called ____.
coordination
A ____ is the structural and functional unit of the nervous system.
nerve
The ____ ensures that nerve impulses travel in one direction only.
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Sensory nerves carry impulses from the sense organs to the brain or spinal cord.
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These nerves contain only sensory fibers.
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Assertion-Reason based question: Select the correct answer based on the following statements - Assertion: Sensory nerves carry impulses from the sense organs to the brain or the spinal cord. Reason: These nerves contain only sensory fibers.
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Study Notes
Nervous System Basics
- Neurons transmit messages throughout the body in the form of electrical signals.
- A bundle of nerve fibers (axons) surrounded by a medullary sheath is termed a nerve.
Types of Nerves
- There are three main types of nerves:
- Sensory nerves carry impulses from sense organs to the brain or spinal cord.
- Motor nerves transmit impulses from the brain or spinal cord to muscles or glands.
- Mixed nerves contain both sensory and motor fibers.
- Apical is not classified as a type of nerve.
Coordination in Organisms
- Coordination refers to the systematic interaction of various organs to produce an appropriate response to stimuli.
Nervous System Structure
- A nerve is identified as the structural and functional unit of the nervous system.
- Synapses are crucial in ensuring nerve impulses travel in a single direction.
Assertion and Reason Analysis
- The assertion that sensory nerves carry impulses from sense organs to the brain or spinal cord is true.
- The reason that these nerves contain only sensory fibers is also true, thereby supporting the assertion.
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Description
Test your knowledge on the basic structure and functions of the nervous system. This quiz covers types of nerves, nerve impulse transmission, and coordination in organisms. Perfect for students learning about the nervous system in biology classes.
