AHE: BLOCK 2: INTRO TO NERVOUS SYSTEM; CNS 1 (OF 2)

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What components are included in the Central Nervous System (CNS)?

Brain and spinal cord only (correct)

Cranial nerves and spinal nerves

Brain, spinal cord, and peripheral nerves

Peripheral nerves and ganglia

What is the primary role of sensory (afferent) pathways in the nervous system?

To transmit information from the CNS to skeletal muscles

To facilitate chemical communication in the CNS

To process and evaluate information

To carry information to the CNS from the external and internal environments (correct)

Which of the following statements correctly describes myelination differences between the CNS and the PNS?

Astrocytes provide myelination in both CNS and PNS.

Schwann cells myelinate axons in the PNS, while oligodendrocytes do so in the CNS. (correct)

In the PNS, myelination is performed mainly by oligodendrocytes.

Myelination does not significantly affect neural conduction speed.

What role does cerebrospinal fluid (CSF) play in the central nervous system?

It provides structural support and absorbs shock. Signup and view all the answers

Which of the following best describes the function of motor (efferent) pathways?

They transmit signals from the CNS to skeletal muscles. Signup and view all the answers

Which of the following correctly identifies the components of the central nervous system (CNS)?

Brain, spinal cord, meninges Signup and view all the answers

What are the three main components of a neuron?

Cell body, dendrites, axon Signup and view all the answers

How do sensory neurons differ from motor neurons?

Sensory neurons carry signals from receptors to the CNS, while motor neurons carry signals from the CNS to effectors. Signup and view all the answers

Which division of the nervous system is responsible for voluntary muscle control?

Somatic nervous system Signup and view all the answers

Which type of neural tissue primarily composes the outer layer of the brain?

Gray matter Signup and view all the answers

What is the primary function of neurotransmitters in the central nervous system?

To transmit signals between neurons Signup and view all the answers

Which structure connects different parts of the brain through nerve fibers?

Cerebral tracts Signup and view all the answers

What is the role of the meninges in the nervous system?

To provide cushioning and support to the CNS Signup and view all the answers

What does the somatic division of the nervous system primarily control?

Skeletal muscle movements Signup and view all the answers

Which component of a neuron is primarily responsible for receiving stimuli?

Dendrites Signup and view all the answers

What kind of signaling do neurons use for communication?

Chemical and electrical impulses Signup and view all the answers

Which part of the neuron is primarily composed of gray matter?

Cell body (soma) Signup and view all the answers

What characterizes the autonomic nervous system's response?

Involuntary and automatic Signup and view all the answers

AHE: BLOCK 2: INTRO TO NERVOUS SYSTEM; CNS 1 (OF 2)

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Questions and Answers

What components are included in the Central Nervous System (CNS)?

What is the primary role of sensory (afferent) pathways in the nervous system?

Which of the following statements correctly describes myelination differences between the CNS and the PNS?

What role does cerebrospinal fluid (CSF) play in the central nervous system?

Which of the following best describes the function of motor (efferent) pathways?

Which of the following correctly identifies the components of the central nervous system (CNS)?

What are the three main components of a neuron?

How do sensory neurons differ from motor neurons?

Which division of the nervous system is responsible for voluntary muscle control?

Which type of neural tissue primarily composes the outer layer of the brain?

What is the primary function of neurotransmitters in the central nervous system?

Which structure connects different parts of the brain through nerve fibers?

What is the role of the meninges in the nervous system?

What does the somatic division of the nervous system primarily control?

Which component of a neuron is primarily responsible for receiving stimuli?

What kind of signaling do neurons use for communication?

Which part of the neuron is primarily composed of gray matter?

What characterizes the autonomic nervous system's response?

Which division of the autonomic nervous system is responsible for the 'fight or flight' response?

What is the role of glial cells in the nervous system?

What is indicated by the term 'amitotic' in the context of neurons?

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