9 Questions
What are the two main parts of the nervous system?
Central Nervous System and Peripheral Nervous System
Which components are part of the Central Nervous System (CNS)?
Brain and spinal cord
What is the primary function of the nervous system?
Communicating and coordinating body functions
Which of the following is not a part of a neuron?
Mitochondria
What is the role of the cranium?
Protect the brain
What is the function of neurons in the nervous system?
Transmit nerve impulses
Which part of the nervous system includes sensory and motor nerves?
Peripheral Nervous System
Which vital functions are controlled by the central nervous system?
Breathing, heartbeat, and body temperature
What type of cells are neurons?
Nerve cells
Study Notes
Nervous System
- The nervous system is a network of nerves that connects the brain to every part of the body, enabling them to work together and communicate.
- It is divided into two parts: the Central Nervous System (CNS) and the Peripheral Nervous System (PNS).
Central Nervous System (CNS)
- Composed of the brain, spinal cord, and nerves.
- Controls vital functions necessary for living, such as:
- Breathing
- Maintaining body temperature
- Thinking
- Feelings
- Heartbeat
Brain
- Enclosed in a hard bony protective structure called the cranium (skull).
- Made up of soft nerve cells called neurons.
- Structure similar to a walnut.
Neurons
- Specialized nerve cells that are the basic structural and functional units of the nervous system.
- Parts of a neuron:
- Nucleus
- Cell body
- Dendrite
- Axon
- Nerve ending
- Responsible for communicating and coordinating the body's functions.
Learn about the structure and functions of the central and peripheral nervous systems, including the brain and sensory nerves.
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