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The Central Nervous System (CNS) Quiz

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Questions and Answers

Which animals have a true brain?

Bilaterally symmetric and triploblastic animals

Onychophorans, gastropods, and lancelets

Arthropods, cephalopods, and vertebrates (correct)

Sponges and diploblasts

What is the primary function of the central nervous system (CNS)?

To coordinate and influence the activity of all parts of the body (correct)

To integrate received information

To enclose the brain and spinal cord

To provide a barrier to chemicals dissolved

What is the CNS composed of?

Meninges that enclose the brain and spinal cord

Nervous tissue positioned along the body axis (correct)

Only the spinal cord

Only the brain

Which animals are excluded from the discussion of the vertebrate central nervous system?

<p>Sponges and diploblasts</p> Signup and view all the answers

What do the meninges provide for the brain and spinal cord?

<p>A protective enclosure</p> Signup and view all the answers

Study Notes

True Brain Animals

Animals with a true brain include vertebrates such as mammals, birds, reptiles, amphibians, and fish.
Cephalopods like octopuses and squids also possess a complex brain structure.

Primary Function of the Central Nervous System (CNS)

The CNS coordinates and processes sensory information, controls voluntary and involuntary responses, and regulates bodily functions.

Composition of the CNS

The CNS is primarily composed of the brain and the spinal cord.
It is made up of neurons, glial cells, and blood vessels, facilitating communication and support.

Animals Excluded from Discussion of Vertebrate CNS

Invertebrates like arthropods, annelids, and cnidarians are typically excluded from discussions of the vertebrate CNS due to their simpler nervous systems.

Role of Meninges

Meninges are protective membranes that encase the brain and spinal cord.
They help to cushion the CNS, provide structural support, and contain cerebrospinal fluid that nourishes and protects neural tissues.

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Description

Test your knowledge about the Central Nervous System (CNS) with this quiz! Learn about the brain and spinal cord, their functions, and how they coordinate and influence the body's activities. Challenge yourself with questions about the structure and importance of the CNS.