36 Questions
Which of the following is a correct description of myelin?
A lipid-rich intermittent covering over the axons of some neurons
What is the function of afferent neurons?
In the direction toward the brain or spinal cord
What happens during depolarization of a neuron?
To change the charge across the cell membrane of a neuron by the flow of Na+ into the cell
What is the function of efferent neurons?
In the direction away from the brain or spinal cord
What is the resting membrane potential?
A difference in charge across the cell membrane of a neuron created by the presence of many large negative ions inside the cell and many positive sodium ions outside the cell
Which of the following best describes an action potential?
The flow of electricity along an axon of a neuron in one direction
What does it mean to depolarize a neuron?
To change the charge across the cell membrane of a neuron by the flow of Na+ into the cell
What is a reflex?
An involuntary, predictable motor response to a stimulus without conscious thought
Which of the following best describes depolarization of a neuron?
To change the charge across the cell membrane of a neuron by the flow of Na+ into the cell
What is the function of a synapse?
Junction formed by the neuron’s synaptic knob with another cell
Which of the following best describes repolarization of a neuron?
To change the charge across the cell membrane of a neuron by the opening of K+ channels to allow the flow of K+
What is dynamic equilibrium?
Equilibrium perceived when the head is stationary or moving in a straight line
What is the role of K+ channels in repolarization?
To allow the flow of potassium ions (K+) out of the cell
Which of the following best describes the term 'Gastr-'?
Stomach
Which of the following best describes the term 'Megal-'?
Enlarged
Which of the following best describes the term 'Trans-'?
Through
Which term refers to the stomach?
Gastr-
Which term means 'through'?
Trans-
Which term means 'dry'?
Xer-
Which term refers to the intestines, usually the small intestines?
Enter-
Which term means 'slow'?
Brady-
Which term means 'enlarged'?
Megal-
What is a nociceptor?
A pain receptor that detects tissue injury or potential tissue injury
Which of the following best describes the term 'Static equilibrium'?
Equilibrium perceived when the head is stationary or moving in a straight line
Which of the following best describes the term 'Nociceptor'?
A pain receptor that detects tissue injury or potential tissue injury
Which of the following best describes the term 'Olfactory'?
Pertaining to the sense of smell
Which of the following best describes gustation?
The sense of taste
Which of the following best describes static equilibrium?
Equilibrium perceived when the head is stationary or moving in a straight line
What is the function of nociceptors?
A pain receptor that detects tissue injury or potential tissue injury
Which sense is associated with the term 'olfactory'?
Pertaining to the sense of smell
Which of the following best describes the term 'Nociceptor'?
A pain receptor that detects tissue injury or potential tissue injury
What is the function of a synapse?
To transmit electrical signals between neurons
What is the role of K+ channels in repolarization?
To restore the resting membrane potential of a neuron
Which of the following best describes a nociceptor?
A pain receptor that detects tissue injury or potential tissue injury
What is the function of a receptive field?
An area in which a single neuron is responsible for detecting a stimulus
What does refraction refer to?
The bending of light as it passes through materials of different densities
Test your knowledge on key terms related to the nervous system with this quiz! From myelin to action potential to afferent, challenge yourself to find the correct definitions for these important concepts.
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