Nervous System: Structure and Function
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Questions and Answers

Which of the following tissues completely surrounds the brain and spinal cord?

  • Pia mater
  • Cerebrospinal fluid
  • Dura mater
  • Meninges (correct)

What is the potential space between the dura and arachnoid mater called?

  • Subarachnoid space
  • Cerebrospinal space
  • Subdural space (correct)
  • Epidural space

What is the function of the epidural space?

  • To enclose the filum terminale
  • To fuse with the periosteum of coccyx
  • To drain venous blood from the brain
  • To allow nerves to pass through (correct)

Which of the following is NOT a function of the dura mater?

<p>To produce cerebrospinal fluid (A)</p> Signup and view all the answers

What is the purpose of the tentorium cerebelli?

<p>To separate the cerebrum and cerebellum (C)</p> Signup and view all the answers

What is the arachnoid mater separated from the pia mater by?

<p>Subarachnoid space (A)</p> Signup and view all the answers

What is the pia mater adhered to?

<p>Brain (A)</p> Signup and view all the answers

What is the extension of the inner layer of dura mater that fuses with the periosteum of coccyx?

<p>Spinal dura mater (B)</p> Signup and view all the answers

What is the main function of the perineurium?

<p>To surround and protect each individual nerve fiber (C)</p> Signup and view all the answers

What term is used to describe groups of cell bodies in the central nervous system?

<p>Nuclei (D)</p> Signup and view all the answers

Which component of the reflex arc is responsible for analyzing sensory impulses?

<p>Reflex center (D)</p> Signup and view all the answers

Which term refers to the space between two neurons where the nerve impulse is transmitted?

<p>Synaptic cleft (A)</p> Signup and view all the answers

Which component is responsible for carrying sensory impulses towards the central nervous system?

<p>Afferent neuron (C)</p> Signup and view all the answers

What is the role of neurotransmitters in the nervous system?

<p>To transmit nerve impulses across the synaptic cleft (D)</p> Signup and view all the answers

Which structure is not directly involved in the reflex arc?

<p>Synapse (A)</p> Signup and view all the answers

What is the function of the epineurium?

<p>To enclose and protect bundles of nerve fibers (C)</p> Signup and view all the answers

What is the primary role of dendrites in a neuron?

<p>To carry impulses towards the cell body (C)</p> Signup and view all the answers

Which structure in the cell body is responsible for the production of ribosomes?

<p>Nucleolus (A)</p> Signup and view all the answers

What are Nissl bodies composed of?

<p>Ribonucleic proteins and iron (B)</p> Signup and view all the answers

Which substance is notably absent in the structure of an axon?

<p>Nissl bodies (B)</p> Signup and view all the answers

Which feature is unique to the cell body in neurons?

<p>Presence of Nissl bodies (C)</p> Signup and view all the answers

What is the approximate maximum length of an axon?

<p>100 cm (B)</p> Signup and view all the answers

What role do Nissl bodies play in nerve impulse conduction?

<p>Accelerating metabolic activity by releasing iron (D)</p> Signup and view all the answers

What does the centrosome in a neuron's cell body do?

<p>Forms microtubules (B)</p> Signup and view all the answers

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