nervous system🌺 Flashcards
(22 cards)
- a type of cell that receives and sends messages from the body to the brain and back to the body
neuron
a change in an organism’s environment that causes the organism to react
stimulus
how the body reacts to a stimulus
response
The largest part of the brain that controls thinking, memory, senses, and voluntary movements.
cerebrum
The part of the brain that helps with balance and coordination of movement.
cerebellum
The part of the brain that controls basic involuntary actions like breathing and heartbeat.
medulla
What are the two main parts of the central nervous system?
brain and spinal cord
What percentage of blood pumped from the heart does the brain receive?
20%
Which part of the brain is the largest?
Cerebrum
What is the main function of the cerebrum?
Controls voluntary activities
What is the main role of the spinal cord?
To connect the brain and send messages throughout the body
What is the main job of the nervous system?
To control and coordinate body functions
Which of the following is NOT a function of the nervous system?
producing red blood cells
What is a stimulus in relation to the nervous system?
Something that causes a response in the body
What is the basic unit of the nervous system?
Neuron
How many MAIN parts does a neuron have?
Three
Which part of the neuron receives messages from other neurons?
Dendrites
What is the long, thin part of the neuron that carries messages away from the cell body?
Axon
What are the structures at the end of the axon called?
Axon terminals
What is the gap between two neurons called?
Synapse
What are the chemical messengers that pass across the synapse?
Neuro Transmitters
