Nervous system

Quiz Type

Practice

Subject

Pharmacology

Level

Level 200

Questions

10 questions

Created By

Bayirinoba Maciline

Quick Rules

Time limit: 10 minutes
Multiple attempts are not allowed
All questions must be answered to submit

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Question 1 of 10

Question 1

Basic multiple choice Remembering

What is the primary function of the nervous system?

Regulate bodily functions

Transmit signals throughout the body

Correct

Generate energy for cells

Produce hormones

Explanation

The primary function of the nervous system is to transmit signals throughout the body, allowing communication between different parts of the body and facilitating responses to internal and external stimuli.

Question 2

Basic multiple choice Remembering

Which component is NOT a part of the nervous system?

Brain

Spinal cord

Nerves

Heart

Correct

Explanation

The heart is not a part of the nervous system; it is an organ of the circulatory system. The brain, spinal cord, and nerves are all components of the nervous system.

Question 3

Basic multiple choice Remembering

What type of signals does the nervous system primarily transmit?

Chemical signals

Electrical impulses

Correct

Mechanical signals

Thermal signals

Explanation

The nervous system primarily transmits electrical impulses, which are used to communicate signals between neurons and throughout the body.

Question 4

Basic multiple choice Remembering

What is the main role of neurons in the nervous system?

Store nutrients

Support immune function

Transmit information

Correct

Regulate body temperature

Explanation

Neurons are the primary cells in the nervous system, and their main role is to transmit information through electrical and chemical signals.

Question 5

Basic multiple choice Remembering

Which part of the nervous system controls voluntary movements?

The autonomic nervous system

The central nervous system

Correct

The peripheral nervous system

The endocrine system

Explanation

The central nervous system, which includes the brain and spinal cord, controls voluntary movements by processing sensory information and coordinating motor responses.

Question 6

Complex multiple choice Understanding

A patient is experiencing decreased reflexes and difficulty with voluntary muscle control. Based on your understanding of the nervous system, what could be the underlying issue?

Damage to the peripheral nerves could hinder signal transmission.

Correct

An overactive central nervous system might cause excessive muscle contractions.

Increased activity in the sympathetic nervous system may lead to enhanced muscle control.

Nerve damage in the brain is an unlikely cause of motor function issues.

Explanation

The correct analysis is that damage to the peripheral nerves can impede the transmission of signals, leading to decreased reflexes and motor control issues. The other options incorrectly relate sympathetic nervous system activity or dismiss the role of nerve damage in muscle control.

Question 7

Complex multiple choice Understanding

During a neurological exam, a doctor notes that a patient has a diminished response to stimuli in both the upper and lower limbs. Which of the following interpretations should the doctor consider regarding the patient's nervous system functioning?

The patient may have a central nervous system disorder affecting both voluntary and reflex actions.

Correct

Injury to the spinal cord would only affect one limb, not both.

Peripheral nerves rarely impact overall reflex responses if one limb is unaffected.

A localized injury is likely, as the response to stimuli is typically unilateral.

Explanation

The correct interpretation is that a central nervous system disorder could explain the diminished responses in both limbs. Other options incorrectly assert that injuries or impacts on reflex responses are usually unilateral or limited to specific areas, which is not the case.

Question 8

Case based multiple choice Understanding

[Case Scenario] A 25-year-old marathon runner visits a neurologist complaining of periodic numbness in her legs, which she experiences primarily after long runs. The runner describes the sensation as a tingling feeling that lasts for several minutes after she completes her runs. After conducting a physical examination and reviewing her medical history, the neurologist suspects that the issue may be related to the runner's nervous system performance during prolonged physical activity. Question: What could be the most plausible explanation for the runner's symptoms?

The symptoms are due to compression of peripheral nerves during prolonged running.

Correct

The symptoms are indicative of a neurological disorder that affects motor neurons.

The symptoms are likely caused by dehydration and electrolyte imbalance.

The symptoms point towards an issue with the central nervous system directly impairing sensory processing.

Explanation

The case describes symptoms (numbness and tingling) that occur specifically after prolonged activity, indicating a likely mechanical effect on the nerves due to pressure or compression rather than an underlying neurological condition or central processing issue. This is a common presentation among athletes in high-demand scenarios.

Question 9

Case based multiple choice Understanding

[Case Scenario] An 18-year-old female student approaches her teacher expressing a concern that she often feels dizzy and lightheaded during her chemistry lab, especially when standing for extended periods. She reports that her vision sometimes blurs, and she has fainted once after a long session in the lab. The teacher notes that the student has not been hydrating properly during the day and often forgets to eat breakfast. They decide to discuss potential effects on her nervous system due to dehydration and lack of nutrition. Question: What is the most likely effect on the student's nervous system from dehydration and lack of nutrition?

Dehydration can lead to insufficient glucose to the brain, affecting cognitive functions.

Correct

The student's symptoms are purely psychological; they are due to anxiety about lab performance.

Low hydration levels will speed up the transmission of electrical signals in the nervous system.

A lack of nutrition can directly cause brain tissue to degrade over time.

Explanation

The scenario highlights the acute impacts of nutrition and hydration on the nervous system, particularly as they relate to brain energy requirements. Dizziness and lightheadedness can be immediate results of inadequate blood flow due to dehydration and insufficient glucose levels affecting cognitive function.

Question 10

Case based multiple choice Understanding

[Case Scenario] A 30-year-old IT professional is experiencing tingling sensations in her fingers and hands, especially after extended hours of typing. She also mentioned that she feels some weakness in her grip. Concerned about the possibility of a persistent injury, she visits a healthcare provider who performs a neurological examination. The healthcare provider explains that this condition could be linked to the functioning of her nervous system and potential nerve compression from her work posture. Question: What condition might the healthcare provider be concerned about regarding the functioning of the professional's nervous system?

Carpal tunnel syndrome due to median nerve compression.

Correct

Peripheral neuropathy unrelated to her occupation.

Multiple sclerosis causing demyelination in the nerves.

Tendonitis affecting the grip strength in her hands.

Explanation

The symptoms presented, coupled with the occupational activities, strongly suggest carpal tunnel syndrome, which is a common condition amongst individuals who engage in prolonged typing or repetitive wrist motions. It involves nerve compression that leads to tingling, numbness, and weakness in hand functions.