Health Science I - Nervous System

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Science
•
9th - 12th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
What part of the brain is called the relay center?
Back
Thalamus: The thalamus acts as a relay station for sensory and motor signals to the cerebral cortex.
2.
FLASHCARD QUESTION
Front
Which structure insulates the axon and increases the speed an impulse travels along the neuron?
Back
Myelin Sheath: A fatty layer that surrounds the axon of a neuron, facilitating faster transmission of electrical impulses.
3.
FLASHCARD QUESTION
Front
What part of the nervous system calms the body by slowing breathing rate and heart rate?
Back
Parasympathetic Nervous System: This division of the autonomic nervous system is responsible for rest and digest functions.
4.
FLASHCARD QUESTION
Front
Which nervous system disorder involves uncontrolled electrical activity within the brain?
Back
Epilepsy: A neurological disorder characterized by recurrent seizures due to abnormal electrical activity in the brain.
5.
FLASHCARD QUESTION
Front
What term means paralysis of the lower body and legs?
Back
Paraplegia: A condition resulting from spinal cord injury or disease that leads to loss of movement and sensation in the lower body.
6.
FLASHCARD QUESTION
Front
What is the primary function of the cerebellum?
Back
Coordination and Balance: The cerebellum is responsible for fine motor control and maintaining balance.
7.
FLASHCARD QUESTION
Front
What is the role of neurotransmitters in the nervous system?
Back
Chemical Messengers: Neurotransmitters transmit signals across synapses between neurons, influencing various bodily functions.
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