What is the speed at which neural messages travel from the brain to the body?

Myelin and Nervous System Functions

Interactive Video
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Biology, Science, Physics
•
9th - 10th Grade
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Hard

Patricia Brown
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
250 mph
100 mph
750 mph
500 mph
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary function of dendrites in a neuron?
Transmit signals to muscles
Insulate the axon
Receive signals from other neurons
Store genetic information
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Who first named myelin and in what year?
Santiago Ramón y Cajal in 1906
Rudolf Virchow in 1854
Louis-Antoine Ranvier in 1717
Camillo Golgi in 1873
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary role of myelin in the nervous system?
To produce neurotransmitters
To insulate axons and speed up signal transmission
To connect neurons to blood vessels
To store energy
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which cells are responsible for producing myelin in the central nervous system?
Microglia
Astrocytes
Oligodendrocytes
Schwann cells
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the gaps between myelin sheaths called?
Dendritic spines
Axon terminals
Nodes of Ranvier
Synaptic clefts
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do squids and octopuses achieve fast signal transmission without myelin?
By having larger diameter axons
By increasing the number of neurons
By using electrical synapses
By using chemical signals
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