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Questions and Answers
What is the primary function of the nervous system?
What is the primary function of the nervous system?
The primary function of the nervous system is to detect and respond to changes in both the internal and external environments.
List two components of the Peripheral Nervous System.
List two components of the Peripheral Nervous System.
Sensory nerves and sensory receptors are two components of the Peripheral Nervous System.
What role does the spinal cord play in the nervous system?
What role does the spinal cord play in the nervous system?
The spinal cord connects the brain to the peripheral nervous system and carries impulses to and from different parts of the body.
What is meant by homeostasis in the context of the nervous system?
What is meant by homeostasis in the context of the nervous system?
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What happens when there is damage to the nervous system?
What happens when there is damage to the nervous system?
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Explain the significance of the brain in the nervous system.
Explain the significance of the brain in the nervous system.
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Name two types of nerves found in the Central Nervous System.
Name two types of nerves found in the Central Nervous System.
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What is a stimulus and how does it initiate a response in the nervous system?
What is a stimulus and how does it initiate a response in the nervous system?
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Study Notes
Nervous System Function
- Detects and responds to stimuli
- Maintains internal balance (homeostasis)
- Controls and coordinates organ functions
Nervous System Structure
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Central Nervous System (CNS):
- Brain (interprets impulses)
- Spinal Cord (conducts impulses)
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Peripheral Nervous System (PNS):
- Cranial nerves (12 pairs)
- Spinal nerves (31 pairs)
Stimulus and Response
- Stimulus: Internal or external change (e.g., light, sound, touch)
- Sensory receptor: Detects stimulus and converts it into a nerve impulse
- Brain: Interprets nerve impulse
- Effector: Produces response
- Response/action: Physical or chemical change
Types of Nervous System Actions
- Voluntary actions: Controlled by the cerebrum (e.g., walking, eating)
- Involuntary actions: Controlled by the medulla oblongata (e.g., heartbeat, breathing, sneezing)
- Reflex actions: Automatic responses to stimuli (e.g., withdrawing hand from hot object)
Damaged Nervous System Effects
- Causes temporary or complete paralysis
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Description
Test your knowledge on the nervous system's structure and function, including the central and peripheral nervous systems. Explore how the body detects stimuli and coordinates responses. This quiz covers both voluntary and involuntary actions within the nervous system.
