Neurons
Sending and Receiving
The Central Nervous System
Nervous?
Your Senses
100
A cell that carries information through the nervous system is called a ...
Neuron
100
The __________ carry a nerve impulse towards the cell body.
Dendrites
100
Name the three structures that make up the brain. Which is the largest?
Cerebrum, Cerebellum, & Brainstem. The Cerebrum is the largest.
100
When a person is paralyzed, it means that they no longer have control over a certain part of their body. Explain paralysis in terms of what must have happened in the nervous system.
An cut or detachment of the spinal cord causes the communication between the brain and peripheral nerves to stop, which means a person may no longer have control over that part of their body.
100
The snail-shaped tube in the inner ear that responds to sound is called the...
Cochlea
200
A motor neuron sends nerve impulses to...
Muscles
200
What is a response?
The way in which an organism reacts to a stimulus.
200
What does the spinal cord connect the brain to?
The peripheral nervous system.
200
Which hemisphere of your brain controls the right side of your body?
The left hemisphere.
200
Give an example of how your senses of smell and taste work very closely together.
Answers will vary.
300
A nerve is...
A bundle of nerve fibers.
300
The axon of a neuron carries messages __________ from the cell body.
Away
300
The cerebellum is responsible for maintaining...
Balance and muscle coordination.
300
People who are "left brained" are considered to be more creative or logical?
Logical
300
How do reflexes help us survive?
Answers will vary.
400
The control center of the neuron is called its...
Nucleus
400
Any change in the environment that causes an organism to react is called a...
Stimulus
400
What is a reflex?
A reflex is an automatic response that occurs very quickly and without conscious control.
400
Give an example of how a nerve impulse is passed from sensory to inter to motor neuron.
Answers will vary: Example, you hear a bell ring and your sensory neurons in your ear pick up the impulse, send it through a interneuron to a motor neuron which tells your leg to get up and move to your next class.
400
What is the function of sensory neurons and where would I find them?
They carry nerve impulses from sensory organs. You would find them in eyes, ears, nose, mouth, and skin.
500
A message carried by neurons is known as a...
Nerve impulse
500
The gap between the axon of one neuron and the dendrite of another is called a...
Synapse
500
Give three actions that your brainstem controls.
Involuntary actions such as breathing, heart rate, and digestion.
500
An injury to the brain where the cerebrum bumps against the skull and "bruises" is called a...
Concussion
500
Describe the difference between individuals who have nearsightedness and farsightedness.
Someone with nearsightedness can see close objects clearly and would have difficulty seeing objects at a distance, while someone with farsightedness can see objects far away clearly, but close objects with difficulty.
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