Nervous system

• Is a complex network of nerves and cells that carry messages to and from the brain and spinal cord to various parts of the body.

  Nervous system
• Serves as the main processing center of the nervous system.

  Central nervous system
• The central nervous system consist of two main components

  Brain and Spinal Cord
• Is an organ located within the skull that functions as organizer and distributor of information for the body.

  Brain
• Is the large, upper part of the brain that controls activity and thought.

  Cerebrum
• Is part under the cerebrum that controls posture, balance, and coordination.

  Cerebellum
• Connects the brain to the spinal cord and controls automatic functions such as breathing, digestion, heart rate, and blood pressure.

  Brain stem
• Serves as a channel for signal between the brain and the majority of the body parts and controls some simple musculoskeletal reflexes even without the processing of the brain.

  Spinal cord
• Connects the central nervous system to the organs and limbs.

  Peripheral Nervous System
• Carry motor and sensory signals between spinal cord and the body

  Spinal nerves
• Are nerve fibers that carry information into and out of the brain stem

  Cranial nerves
• Is associated with the involuntary control of the body movements

  Autonomic Nervous System
• Is associated with the voluntary control of body movements

  Somatic Nervous System
• Is activated when the body is in a dynamic role or stress

  Sympathetic Nervous System
• Is the basic unit of the nervous system.

  Nerve cell
• The nerve cell is called a

  Neuron
• Carry impulses toward the cell body

  Dendrites
• Carry impulses away from the cell body

  Axons
• The gap between neurons is called

  synapse
• These two systems work together to maintain the body's homeostasis

  Nervous and endocrine system
• Is a state reached when each part of the body functions in equilibrium with other parts.

  Homeostasis
• What mechanisms are used by most of body systems to maintain homeostasis

  Feedback mechanism