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11/3 & 11/4 - 7th Grade Agenda Learning Objective: Learn about Neurons
Collect Reading & Notetaking p.284 & 285 Chap 3 Test Text book Reading p HW: Reading & Notetaking p.286 & 288 Reminder: HW: Cell Model due 11/5 & 11/6 (40 Points)
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Reflection Prompt: What are the 3 type of Neurons? Define what they do.
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What is the Nervous System?
The nervous system receives infor________ about what is happening both inside and outside your body. Like the Internet, your nervous system is a commun________ network. mation ication
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Responding to Information
Any change or signal in the environment that can make an organism react is called a stim_______ A resp_____ is what your body does in reaction to a stimulus ulus onse
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What is Homeostasis? Homeostasis is the process by which an organism’s internal environment is kept stable in spite of changes in the external environment.
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How does your body maintain a constant temperature on a hot day?
By perspiring The liquid evaporates and it absorbs heat in the body and carries it away.
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Structure of Neurons The structure of neuron enables it to carry nerve imp_________. A neuron has large cell body that contains the nucleus, threadlike extensions called den_______, and an axon ulses drites
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Structure of Neurons drites
Den_________ carry impulses towards the neuron’s cell body The ax____ carries impulses aways from the cell body An axon or a nerve cell can be 3 feet long. on
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3 Types of Neurons sory Sen_______ neuron picks up stimuli from the internal or external environment An inter________ is a neuron that carries nerve impulses from one neuron to another A motor neuron sends an impulse to a muscle or gland neuron
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What is a synapse? The gap between axon and dendrite is called a syn_______ The axon tips release che______ that carry the impulse across the gap (synapse) apse micals
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What is the central nervous system?
The cen______ nervous system is the control center of the body. It includes the brain and the spi____ cord. nal
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The Brain The three main regions of the brain are the cerebr____, the cerebell___ and the brain stem. um um
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The Cerebrum Cerebrum is the largest part of the brain.
The cerebrum interprets input from the senses, controls move_____, and carries out learning and remem______ ment bering
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