6 Questions
What is the primary function of the nervous system?
To receive and respond to stimuli from inside and outside the body
What part of the brain is responsible for controlling the left side of the body?
Right hemisphere
What is the function of the cerebellum?
To maintain balance and coordination
What is the role of the peripheral nervous system?
To include all the other nerves in the body
What is the function of the brain stem?
To connect the brain to the spinal cord
What is the function of the central nervous system?
To include the brain and spinal cord
Study Notes
Nervous System Overview
- Receives, interprets, and responds to stimuli from inside and outside the body
- Performs five main functions: maintains homeostasis, coordinates body systems, responds to external stimuli, facilitates understanding and response to sensory inputs, and maintains consciousness
Components of the Nervous System
- Central nervous system (CNS): brain and spinal cord
- Peripheral nervous system (PNS): all other nerves in the body
The Brain
Cerebrum
- Responsible for thinking, learning, and interpreting sensory information
- Divided into right and left hemispheres:
- Right hemisphere: controls left side of the body, associated with creative functions
- Left hemisphere: controls right side of the body, associated with logical and reasoning functions
Cerebellum
- Located behind and under the cerebrum
- Maintains balance and coordination
Brain Stem
- Connects brain to spinal cord
- Coordinates involuntary muscle movements (e.g. heartbeat, breathing)
Neurons: Specialized Cells
- Carries messages (impulses) through the nervous system
- Main parts of a neuron:
- Cell body: main part of the cell containing the nucleus
- Dendrites: receive incoming messages
- Axon: carries outgoing messages
Types of Neurons
- Sensory neurons: receive information and send impulses to spinal cord and brain
- Motor neurons: relay impulses from brain or spinal cord to body parts
- Interneurons: relay impulses between sensory and motor neurons
Learn about the five functions of the nervous system, including maintaining homeostasis, responding to stimuli, and controlling learning and memory.
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