10 Questions
What is the main function of the nervous system?
Coordinating actions and transmitting signals
Which part of the nervous system consists of the brain and spinal cord?
Central nervous system (CNS)
What are the nerves that transmit signals from the brain called?
Motor nerves or efferent nerves
When did nervous tissue first arise in wormlike organisms?
About 550 to 600 million years ago
What is the function of the peripheral nervous system (PNS)?
Connecting the CNS to every other part of the body
What is the main function of the peripheral nervous system (PNS)?
Transmit signals from the CNS to the rest of the body
What are spinal nerves primarily responsible for?
Transmitting both sensory and motor signals
Which part of the nervous system primarily responds to environmental changes?
Peripheral nervous system (PNS)
What do motor nerves primarily do?
Transmit signals from the brain
In vertebrates, what does the central nervous system (CNS) consist of?
Brain and spinal cord
Study Notes
Nervous System Overview
- The main function of the nervous system is to control and coordinate the body's functions and responses.
Central Nervous System (CNS)
- The CNS consists of the brain and spinal cord.
- In vertebrates, the CNS consists of the brain and spinal cord.
Nerve Types
- The nerves that transmit signals from the brain are called motor nerves.
- Motor nerves primarily transmit signals from the brain to muscles and glands.
- Spinal nerves are primarily responsible for transmitting signals between the CNS and the rest of the body.
Evolution of Nervous System
- Nervous tissue first arose in wormlike organisms around 500-600 million years ago.
Peripheral Nervous System (PNS)
- The main function of the PNS is to connect the CNS to the rest of the body.
- The PNS primarily responds to environmental changes and transmits signals to and from the CNS.
Functions of Nervous System
- The nervous system plays a crucial role in controlling and coordinating the body's functions and responses.
- The CNS primarily responds to internal changes and maintains homeostasis.
Test your knowledge of the nervous system with this quiz. Explore the functions, anatomy, and key components of this intricate biological system. Challenge yourself with questions about neurons, brain structure, and sensory processing.
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