Podcast
Questions and Answers
Which part of the nervous system is primarily composed of the brain and spinal cord?
Which part of the nervous system is primarily composed of the brain and spinal cord?
- Somatic nervous system
- Autonomic nervous system
- Central nervous system (correct)
- Peripheral nervous system
Which animals have a true brain?
Which animals have a true brain?
- Bilaterally symmetric and triploblastic animals
- Sponges and diploblasts
- Onychophorans, gastropods, and lancelets
- Arthropods, cephalopods, and vertebrates (correct)
What is the function of the meninges in vertebrates?
What is the function of the meninges in vertebrates?
- To provide a barrier to chemicals dissolved
- To coordinate and influence the activity of all body parts
- To enclose the brain and spinal cord (correct)
- To integrate information received by the brain
Which animals have a central nervous system that is radically distinct from all other animals?
Which animals have a central nervous system that is radically distinct from all other animals?
What is the structure that may have an enlarged section at the rostral end in the central nervous system?
What is the structure that may have an enlarged section at the rostral end in the central nervous system?
Study Notes
Central Nervous System
- The central nervous system (CNS) in vertebrates comprises the brain and spinal cord.
Brain
- A true brain is a feature found exclusively in animals within the kingdom Animalia.
- All animals belonging to the Phylum Chordata possess a true brain.
Meninges
- The meninges are protective membranes that surround the brain and spinal cord in vertebrates.
- The meninges are responsible for providing protection, support, and nutrient supply to the central nervous system.
Distinct Central Nervous System
- Cnidarians are a phylum of animals that possess a central nervous system distinct from all other animals.
- The nervous system in cnidarians is characterized by a nerve net rather than a centralized brain.
Enlarged Rostral End
- The brain is typically located at the rostral end (head) of the central nervous system.
- In some animals, the rostral end of the central nervous system may show an enlargement, forming a brain with distinct regions.
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Description
Test your knowledge of the central nervous system (CNS) with this quiz! Learn about the brain and spinal cord, their functions, and their role in coordinating the body's activity. Challenge yourself with questions on this essential part of the nervous system.
