I will learn the 3 functions of and components of the nervous system. Monday April 1, 2019 Agenda: Introduction to Nervous System You will Need: Body Systems Workbook, Pencil, Highlighter Turn in: Any missing work…Due Wednesday TO DO: Turn to pg. 41 Effect of Fatigue on Muscle Action (Choice…Tennis ball or clothespin) Learning Target: I will learn the 3 functions of and components of the nervous system. Success Criteria: I can explain the functions of the nervous system and the identify the components of the nervous system.
Daily Agenda Good Things Rater Check in Job Assignments Worth the Wait forms due—Friday April 26 Quizizz—Nervous, Endocrine and Integumentary Systems—Thursday April 4 (Open Note) Vocabulary: pg. 6—homeostasis, impulse pg. 7—nerve pg. 8—nervous system Begin Notes—Nervous System pgs. 30-31 LAUNCH
The Nervous System pgs. 30-31
Functions of the Nervous System the center of all thought, learning and memory
Functions of the Nervous System the center of all thought, learning and memory regulates and maintains homeostasis (a state of balance) examples: body temperature, heart rate, respiration, digestion
Functions of the Nervous System the center of all thought, learning and memory regulates and maintains homeostasis (a state of balance) examples: body temperature, heart rate, respiration, digestion keeps us in touch with our internal and external environment
Two Divisions of the Nervous System Central Nervous System- brain and spinal cord
Two Divisions of the Nervous System Central Nervous System- brain and spinal cord Three Main Parts of Brain: Cerebrum- interprets input from senses and controls voluntary muscles
Two Divisions of the Nervous System Central Nervous System- brain and spinal cord Three Main Parts of Brain: Cerebrum- interprets input from senses and controls voluntary muscles Cerebellum- coordinates actions of muscles and helps keep your balance
Two Divisions of the Nervous System Central Nervous System- brain and spinal cord Three Main Parts of Brain: Cerebrum- interprets input from senses and controls voluntary muscles Cerebellum- coordinates actions of muscles and helps keep your balance Brainstem- controls homeostasis and coordinates involuntary muscles
What is this part of the brain called? Cerebrum Cerebellum Brain stem Spinal cord
What is the function of the brain stem? Controls homeostasis & voluntary muscles Controls senses & voluntary muscles Controls balance & coordinates muscles Controls homeostasis & involuntary muscles
When you feel hungry, what function is your nervous system trying to carry out? Maintaining homeostasis Moving your body Sensing your environment Keeping your balance
NOT in your NOTES Two Divisions of the Nervous System Peripheral Nervous System- connects the Central Nervous System to the rest of the body
Two Divisions of the Nervous System Peripheral Nervous System- connects the Central Nervous System to the rest of the body Two Groups: Somatic nervous system- controls voluntary actions and input from senses (sound, sight, touch, etc.)
Two Divisions of the Nervous System Peripheral Nervous System- connects the Central Nervous System to the rest of the body Two Groups: Somatic nervous system- controls voluntary actions and input from senses (sound, sight, touch, etc.) Autonomic nervous system- controls homeostasis by regulating the heart, breathing, and digestion without conscious thought
Which division of the nervous system is made up of the brain & spinal cord? Autonomic nervous system Somatic nervous system Central nervous system Peripheral nervous system
Which part of the Peripheral Nervous System controls processes that maintain homeostasis without you even thinking about it? Autonomic nervous system Somatic nervous system Central nervous system Peripheral nervous system
Nerve cells are called neurons Impulse- a message carried by a neuron
Nerve cells are called neurons Impulse- a message carried by a neuron Synapse- the small space that an impulse jumps between neurons
Types of Neurons Sensory neurons: in the skin, muscles, joints, and organs that can sense pressure, temperature, and pain
Types of Neurons Sensory neurons: in the skin, muscles, joints, and organs that can sense pressure, temperature, and pain neurons in nose & tongue sense tastes and smells neurons in inner ear sense sounds rods and cones in eye sense sight
Types of Neurons Motor neurons: stimulate muscle cells throughout the body
Types of Neurons Motor neurons: stimulate muscle cells throughout the body includes muscles of the heart, diaphragm, intestines, and bladder
Types of Neurons Interneurons: connect other neurons
Types of Neurons Interneurons: connect other neurons all neurons in the central nervous system (brain, spinal cord) are interneurons
Reflex Reflex- an involuntary response to a stimulus (change in environment) that allows the body to respond quickly without thinking about it.
What is an impulse? A nerve cell A message carried by neurons The space between two neurons A reflex
What is this structure called? Axon Synaptic terminal Nucleus Dendrite
What does a motor neuron stimulate? Brain cells Sensory organs Muscle cells Sensory neurons
Which is not true about a reflex? It is a quick response. It is voluntary. It does not require conscious thought. It is a response to an external stimulus.
Do the right thing even when no one is looking. It’s called integrity.