The Nervous System - CrashCourse Biology #26
Interactive Video
•
Science
•
8th Grade
•
Practice Problem
•
Hard
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8 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main function of the nervous system?
To control involuntary bodily functions like digestion.
To enable an organism to perform actions and experience sensations.
To transport nutrients and oxygen throughout the body.
To provide structural support and protection to organs.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the specialized cells that make up the nervous system and bundle together to form nerves?
Organs
Tissues
Neurons
Muscles
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which division of the nervous system is primarily responsible for processing and interpreting information?
Peripheral Nervous System (PNS)
Autonomic Nervous System
Central Nervous System (CNS)
Somatic Nervous System
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What type of neurons are responsible for carrying signals from the central nervous system to muscles, causing them to move?
Sensory neurons
Afferent neurons
Motor neurons
Interneurons
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which part of a neuron is primarily responsible for receiving information from other neurons?
Axon
Myelin sheath
Dendrites
Nodes of Ranvier
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the process called when an electrical signal jumps from one exposed part of a neuron to another, speeding up transmission?
Synaptic transmission
Membrane potential
Saltatory conduction
Action potential
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary function of the sodium-potassium pump in a neuron?
To release neurotransmitters into the synapse
To create a voltage difference across the neuron's membrane
To allow positive sodium ions to rush into the cell
To insulate the axon and speed up signal transmission
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