Intro to the Nervous System

Interactive Leacture

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​Introduction to the Nervous System

Multiple Choice

Which of the following is NOT part of the central nervous system (CNS)?

• Brain

• Spinal cord

• Cranial nerves

• Integration and control center

Fill in the Blanks

The peripheral nervous system (PNS) consists mainly of cranial and

nerves.

Fill in the Blanks

The peripheral nervous system (PNS) consists mainly of cranial and

nerves.

Open Ended

Explain the primary functions of the central nervous system (CNS) and the peripheral nervous system (PNS).

Multiple Choice

Which of the following is NOT a basic function of the nervous system?

• Sensory functions

• Integration

• Circulatory control

• Motor functions

Fill in the Blanks

The nervous system processes sensory input through a process called

before generating a motor output.

Open Ended

Describe how the nervous system integrates sensory input and produces a motor output, using an example.

Multiple Choice

Which peripheral nervous system (PNS) division is responsible for the "fight or flight" response?

• Somatic nervous system

• Para-sympathetic nervous system

• Sympathetic nervous system

• Sensory (afferent) pathways

Fill in the Blanks

The autonomic nervous system is divided into the sympathetic nervous system and the

nervous system.

Fill in the Blanks

The central nervous system is responsible for integrating functions, while the

nervous system consists of sensory and motor functions.

Open Ended

Compare and contrast the functions of the somatic nervous system and the autonomic nervous system.

Multiple Choice

Which of the following are the two main cell types found in nervous tissue?

• Neurons and muscle cells

• Neurons and glial cells

• Glial cells and epithelial cells

• Muscle cells and epithelial cells

Match

Match the cell type with its function

• neurons

• glial cells

• oligodendrocytes

provide support and protection

transmit information

produce myelin

• provide support and protection

• transmit information

• produce myelin

Multiple Choice

Which of the following is NOT a characteristic of neurons?

• Extreme longevity

• Amitotic, with few exceptions

• Low metabolic rate

• Conduct electrical impulses

Open Ended

Describe the structural and functional characteristics that make neurons unique compared to other cell types in the body.

Multiple Choice

What is the primary function of axons in neurons?

• Generating action potentials

• Maintaining cell structure

• Synthesizing neuro-transmitters

• Performing cellular respiration

Fill in the Blanks

Action potentials are much faster on

axons.

Open Ended

Explain how axons facilitate communication between neurons and describe the role of myelination in this process.

Multiple Choice

What happens at the axon terminals when an action potential arrives?

• Generation of a new action potential

• Release of neuro-transmitters

• Inhibition of neuron activity

• Formation of new dendrites

Open Ended

Discuss the significance of action potentials in neuron communication and explain how myelination affects this process.

Fill in the Blanks

Bundles of axons in the central nervous system (CNS) are called

.

Multiple Choice

Which type of neuron has a single process extending from the cell body?

• Bipolar

• Multipolar

• Unipolar

• Pseudo-unipolar

Match

Match the type of neuron with an example of its location.

• Afferent neurons

• Efferent neurons

• Inter-

  neurons

retina of the eye

muscles

spinal cord

• retina of the eye

• muscles

• spinal cord

Multiple Choice

Which of the following glial cells is found in the peripheral nervous system (PNS)?

• Astrocytes

• Oligo

  dendrocytes

• Microglia

• Schwann cells

Fill in the Blanks

cells in the central nervous system (CNS) are responsible for producing the myelin sheath around axons.

Multiple Choice

Which of the following is NOT a function of astrocytes in the central nervous system (CNS)?

• Support and brace neurons

• Connect capillaries to neurons

• Produce cerebrospinal fluid

• Contribute to the blood-brain barrier (BBB)

Fill in the Blanks

Astrocytes help control the

environment around neurons.

Open Ended

Describe the role of astrocytes in the blood-brain barrier (BBB) and explain why this barrier is important.

Multiple Choice

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

• Phagocytosis of pathogens

• Myelination of axons

• Support and brace neurons

• Formation of the blood-brain barrier

Multiple Choice

Which of the following is a function of ependymal cells in the central nervous system (CNS)?

• Myelinating axons

• Engulfing pathogens

• Lining ventricles in the brain

• Forming the blood-brain barrier

Open Ended

Describe the role of ependymal cells in the production and circulation of cerebrospinal fluid (CSF) and explain why CSF is important for the central nervous system.

Multiple Choice

Where are satellite cells located in the peripheral nervous system (PNS)?

• In the central canal of the spinal cord

• Within ganglia

• Surrounding axons

• In the ventricles of the brain

Multiple Select

What are the primary functions of satellite cells in the peripheral nervous system (PNS)?

• Myelinating axons

• Providing structural support to neurons

• Controlling the chemical environment

• Producing cerebrospinal fluid

Multiple Choice

What is a primary function of Schwann cells in the peripheral nervous system (PNS)?

• Engulfing pathogens

• Myelinating axons

• Providing nutrients to neurons

• Forming the blood-brain barrier

Fill in the Blanks

Schwann cells are also known as

.

Open Ended

Describe how Schwann cells contribute to the repair of nerve fibers (axons) in the peripheral nervous system (PNS).