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ANP College Exam 5 Study Guide: CNS & PNS Concepts

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Q1. What are the functions of the lobes of the brain?

Background

Topic: Central Nervous System (CNS) - Brain Anatomy

This question tests your understanding of the major lobes of the brain (frontal, parietal, temporal, occipital) and their primary functions.

Key Terms:

  • Frontal lobe

  • Parietal lobe

  • Temporal lobe

  • Occipital lobe

Step-by-Step Guidance

  1. List the four main lobes of the brain and locate them anatomically.

  2. Recall the primary function associated with each lobe (e.g., frontal lobe: motor control, reasoning, etc.).

  3. Think about examples of tasks or behaviors controlled by each lobe.

  4. Consider how damage to each lobe might affect function.

Try solving on your own before revealing the answer!

Q2. Describe the organization of major regions of the brain.

Background

Topic: CNS - Brain Structure

This question is about identifying and describing the main regions of the brain (cerebrum, cerebellum, brainstem, diencephalon) and their organization.

Key Terms:

  • Cerebrum

  • Cerebellum

  • Brainstem

  • Diencephalon

Step-by-Step Guidance

  1. Identify the four major regions of the brain.

  2. Describe the location of each region relative to the others.

  3. Summarize the main function of each region.

  4. Think about how these regions interact to control body functions.

Try solving on your own before revealing the answer!

Q3. Define sensation, perception, processing, adaptation, diplopia, nystagmus, ptosis lag, Bell’s palsy, and reflexes.

Background

Topic: Peripheral Nervous System (PNS) - Sensory and Motor Functions

This question tests your ability to define key terms related to sensory and motor function, including disorders and phenomena.

Key Terms:

  • Sensation

  • Perception

  • Processing

  • Adaptation

  • Diplopia

  • Nystagmus

  • Ptosis lag

  • Bell’s palsy

  • Reflex

Step-by-Step Guidance

  1. Write a brief definition for each term, focusing on its relevance to the nervous system.

  2. For disorders (e.g., Bell’s palsy), note the affected structures and typical symptoms.

  3. For sensory terms, distinguish between sensation and perception.

  4. For reflexes, recall the basic components of a reflex arc.

Try solving on your own before revealing the answer!

Q4. Describe where in the organization of the nervous system that sensation and perception occur.

Background

Topic: PNS & CNS - Sensory Pathways

This question asks you to identify which parts of the nervous system are responsible for sensation and which for perception.

Key Terms:

  • Sensation

  • Perception

  • Peripheral nervous system (PNS)

  • Central nervous system (CNS)

Step-by-Step Guidance

  1. Recall the pathway of sensory information from receptor to brain.

  2. Identify where sensation is detected (e.g., at sensory receptors).

  3. Identify where perception occurs (e.g., in specific brain regions).

  4. Think about how information is processed and interpreted.

Try solving on your own before revealing the answer!

Q5. What stimulates different types of receptors (e.g., chemoreceptors, exteroceptors)?

Background

Topic: PNS - Sensory Receptors

This question tests your knowledge of the stimuli that activate various types of sensory receptors.

Key Terms:

  • Chemoreceptors

  • Exteroceptors

  • Mechanoreceptors

  • Photoreceptors

  • Nociceptors

Step-by-Step Guidance

  1. List the main types of sensory receptors.

  2. Identify the specific stimulus each receptor responds to (e.g., chemicals, light, pressure).

  3. Think about examples of where these receptors are found in the body.

  4. Consider how the stimulus is converted into a nerve signal.

Try solving on your own before revealing the answer!

Q6. Describe receptors by location.

Background

Topic: PNS - Sensory Receptor Classification

This question is about classifying receptors based on their location in the body (e.g., exteroceptors, interoceptors, proprioceptors).

Key Terms:

  • Exteroceptors

  • Interoceptors

  • Proprioceptors

Step-by-Step Guidance

  1. List the three main classes of receptors by location.

  2. Describe where each type is found (e.g., skin, internal organs, muscles).

  3. Summarize the function of each type.

  4. Think about examples of each receptor type.

Try solving on your own before revealing the answer!

Q7. Which types of receptors adapt quickly, slowly, or not at all?

Background

Topic: PNS - Sensory Adaptation

This question tests your understanding of how different sensory receptors respond to sustained stimuli.

Key Terms:

  • Phasic receptors (fast-adapting)

  • Tonic receptors (slow-adapting)

  • Non-adapting receptors

Step-by-Step Guidance

  1. Define adaptation in the context of sensory receptors.

  2. Identify which receptors are phasic, tonic, or non-adapting.

  3. Give examples of each type.

  4. Think about why adaptation is important for sensory perception.

Try solving on your own before revealing the answer!

Q8. Describe aspects of sensory perception (e.g., pattern recognition).

Background

Topic: PNS & CNS - Sensory Processing

This question is about the higher-level processes involved in interpreting sensory information, such as pattern recognition, feature detection, and spatial discrimination.

Key Terms:

  • Pattern recognition

  • Feature detection

  • Spatial discrimination

Step-by-Step Guidance

  1. List the main aspects of sensory perception.

  2. Describe what each aspect means and how it helps us interpret sensory input.

  3. Think about examples (e.g., recognizing faces, identifying textures).

  4. Consider which brain regions are involved in these processes.

Try solving on your own before revealing the answer!

Q9. Describe classification of nerves (sensory, motor, mixed).

Background

Topic: PNS - Nerve Classification

This question tests your knowledge of how nerves are classified based on their function.

Key Terms:

  • Sensory nerves

  • Motor nerves

  • Mixed nerves

Step-by-Step Guidance

  1. Define each type of nerve.

  2. Describe the direction of information flow for each type.

  3. Give examples of each type (e.g., cranial nerves).

  4. Think about why mixed nerves are important.

Try solving on your own before revealing the answer!

Q10. Describe steps in regeneration of nerve fibers and why spinal cord neurons cannot regenerate.

Background

Topic: PNS & CNS - Nerve Regeneration

This question is about the process of nerve fiber regeneration in the PNS and the limitations in the CNS.

Key Terms:

  • Regeneration

  • Schwann cells

  • Oligodendrocytes

  • Growth factors

Step-by-Step Guidance

  1. Outline the steps involved in PNS nerve fiber regeneration.

  2. Describe the role of Schwann cells in regeneration.

  3. Explain why CNS neurons (e.g., spinal cord) do not regenerate (e.g., lack of growth factors, inhibitory environment).

  4. Think about clinical implications of this difference.

Try solving on your own before revealing the answer!

Q11. Identify the cranial nerves by number, name, type of function, and how to test.

Background

Topic: PNS - Cranial Nerves

This question tests your ability to recall the cranial nerves, their functions, and clinical testing methods.

Key Terms:

  • Cranial nerves I-XII

  • Sensory, motor, mixed

  • Clinical testing

Step-by-Step Guidance

  1. List the twelve cranial nerves by number and name.

  2. Identify the function (sensory, motor, mixed) for each nerve.

  3. Describe a basic clinical test for each nerve.

  4. Think about how dysfunction in each nerve presents clinically.

Try solving on your own before revealing the answer!

Q12. Know function and organization of meninges.

Background

Topic: CNS - Meninges

This question is about the three layers of meninges (dura mater, arachnoid mater, pia mater) and their function in protecting the brain and spinal cord.

Key Terms:

  • Dura mater

  • Arachnoid mater

  • Pia mater

Step-by-Step Guidance

  1. List the three layers of meninges in order from outermost to innermost.

  2. Describe the function of each layer.

  3. Explain how the meninges protect the CNS.

  4. Think about clinical conditions related to the meninges (e.g., meningitis).

Try solving on your own before revealing the answer!

Q13. Know function of ventricles.

Background

Topic: CNS - Ventricles

This question is about the brain's ventricles and their role in producing and circulating cerebrospinal fluid (CSF).

Key Terms:

  • Ventricles

  • Cerebrospinal fluid (CSF)

  • Choroid plexus

Step-by-Step Guidance

  1. Identify the four ventricles of the brain.

  2. Describe the function of ventricles in CSF production and circulation.

  3. Explain the importance of CSF for brain health.

  4. Think about clinical conditions related to ventricles (e.g., hydrocephalus).

Try solving on your own before revealing the answer!

Q14. Define reflex, describe steps in a reflex arc, and in the patellar reflex.

Background

Topic: PNS - Reflexes

This question tests your understanding of what a reflex is, the steps in a reflex arc, and the specific example of the patellar reflex.

Key Terms:

  • Reflex

  • Reflex arc

  • Patellar reflex

Step-by-Step Guidance

  1. Define what a reflex is.

  2. List the components of a reflex arc (receptor, sensory neuron, integration center, motor neuron, effector).

  3. Describe the steps in the patellar reflex (e.g., tapping the patellar tendon, muscle contraction).

  4. Think about why reflexes are important for survival.

Try solving on your own before revealing the answer!

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