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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.
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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 LAUNCH
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The Nervous System pgs. 30-31
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Functions of the Nervous System
the center of all thought, learning and memory
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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
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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
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Two Divisions of the Nervous System
Central Nervous System- brain and spinal cord
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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
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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
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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
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What is this part of the brain called?
Cerebrum Cerebellum Brain stem Spinal cord
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What is the function of the brain stem?
Controls homeostasis & voluntary muscles Controls senses & voluntary muscles Controls balance & coordinates muscles Controls homeostasis & involuntary muscles
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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
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NOT in your NOTES Two Divisions of the Nervous System
Peripheral Nervous System- connects the Central Nervous System to the rest of the body
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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.)
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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
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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
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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
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Nerve cells are called neurons
Impulse- a message carried by a neuron
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Nerve cells are called neurons
Impulse- a message carried by a neuron Synapse- the small space that an impulse jumps between neurons
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Types of Neurons Sensory neurons: in the skin, muscles, joints, and organs that can sense pressure, temperature, and pain
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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
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Types of Neurons Motor neurons: stimulate muscle cells throughout the body
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Types of Neurons Motor neurons: stimulate muscle cells throughout the body includes muscles of the heart, diaphragm, intestines, and bladder
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Types of Neurons Interneurons: connect other neurons
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Types of Neurons Interneurons: connect other neurons
all neurons in the central nervous system (brain, spinal cord) are interneurons
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Reflex Reflex- an involuntary response to a stimulus
(change in environment) that allows the body to respond quickly without thinking about it.
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What is an impulse? A nerve cell A message carried by neurons
The space between two neurons A reflex
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What is this structure called?
Axon Synaptic terminal Nucleus Dendrite
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What does a motor neuron stimulate?
Brain cells Sensory organs Muscle cells Sensory neurons
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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.
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Do the right thing even when no one is looking.
It’s called integrity.
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