Scienceee

• Central Nervous System - serves as tge main processing center for the entire nervous system
• Peripheral Nervous System - consists of all nerves outside the brain and spinal cord, including sensory neurons that carry information to the CNS from receptors throughout the body.
• Brain - organ located within the skull that functiona as organizers and distributor
• Cerebrum - latge upper part of the brain that controls activity and thought
• Cerebellum - under the cerebbrum that controls posture, balance and coordinatipn
• Brainstem - Parts that connects the brain to the spinal cord
• Peripheral - connects the cns to the organs and limbs
• Somatic Nerve System - system associated within the voluntary control of body movements
• Spinal nerves - carry motor and sensory signals
• Cranial Nerves - nerve fibers that carry information into and out pf the brain stem
• Autonomic nervous system - system associated with the involun control body movements
• Sympathetic - activated when the body is in a dynamic role or stress
• Parasymp- maintains body functions and restores them ye body ro normal
• Stimulus - Information
• Spinal Cord - 40-50cm

  -connects the brain and body

  -transmits impulses

  -responsible for involuntary
• Nerve Cells are called Neurons
• Neuron - has a cell body containing the nucleus
• Dendrites - carry impulses towards the cell body
• Cell - may have as manu as 200 dendrites carrying impulses toward the cell body
• -Single Dendrite - can be over one meter long
• Axons - carry impulses away from the body
• Axons - pass impulses to the dendrites of the other neurons
• Axons - can be group together
• Neurons - cells with the special ability to cary signals
• Nerve Impulse - combination of an electrical charge
• Nerve Impulse - not a flow of electricity
• Nerve Impulse - cannot jump from one neuron to another
• Nerve Impulse also called Neurotransmitter
• Nervous system is assisted by 5 senses organs

  -eyes

  -ears

  -nose

  -tounge

  -skin
• Stimulus plural Stimuli
• Stimulus - received by the vody

  and a response
• Endocrine System - composed of glands that secrete different types of hormones
• Endocrine Glands secrete chemicals known as “Hormones”
• Hormone - in the blood reached the target organ
• Endocrine system - containes a group of glands that release hormones into the body
• Pituitary - Stimulates growth and controls the function of other glands
• Thyroid - regulates body metabolism and causes storage pf calcium in bones
• Parathyroid - controls the calcium levels in your body and normalize bone growth
• Thymus - enables the body to produce certain antibodies
• Adrenal - prepares the bosy for action controls the heart rate and breathing in times of emergency