Nervous System 1
What does the central nervous system consist of?
the brain and spinal cord
What does the peripheral nervous system consist of?
cranial and spinal nerves
What are neurons?
nerve cells
What are the 3 main parts of the nervous system?
brain, spinal cord, and neurons
What is the basic unit of the nervous system?
neuron
What is the cerebrum responsible for?
voluntary muscular activity, vision, speech, taste, hearing, thought, and memory
What part of the PNS controls the glands and the muscles of the internal organs?
the autonomic nervous system
What does the cell body contain?
the nucleus and much of the cytoplasm
What helps insulate neurons and speeds the transmission of nerve impulses?
myelin
The brain is in which part of the nervous system?
central
Where is the cerebellum located?
at the back of the brain, between the cerebrum and brain stem
What does the sympathetic nervous system do?
arouses the body and mobilizes its energy in stressful situations
What does the parasympathetic nervous system do?
calms the body and conserves its energy
True or False: The nervous system is divided into 2 different parts?
true
What is the main function of the brain stem?
connects the brain to the spinal cord
What does the brain stem regulate?
respirations, BP, and HR
What are specialized to receive information?
dendrites
What do neurotransmitters do?
transmit information from one neuron to another
What are the 2 main parts of the PNS?
sensory and motor
What protects the spinal cord from being damaged?
vertebrae
What carries messages between the brain and other parts of the body?
the spinal cord
What does an axon do?
carries nerve impulses away from the cell body
What part of the nervous system is responsible for processing information?
central
What functions/actions does the autonomic nervous system control?
involuntary actions
What are the two divisions of the autonomic nervous system?
sympathetic and parasympathetic