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Nervous System Brain Spinal Cord Nerves Neurons
Parts of a Neuron Soma – cell body Dendrite – receive messages Axon – send messages out Myelin – help speed up messages, made up of Schwann cells
Types of Neurons Sensory – incoming signals Motor - movement Interneurons – in brain and spinal cord only (processors/relay terminals)
Neural Connections Synapse – space between axon of neuron A and dendrite of neuron B Neurotransmitter – chemicals that diffuse across synapse to change polarity of neuron Bs dendrite membrane
Central Nervous System Brain Spinal Cord Control center, coordinates body functions
Peripheral Nervous System Carry messages to and from CNS Motor and sensory neurons found here. No interneurons here!
Brain Cerebrum Corpus Callosum Pituitary Gland Hypothalamus Brain Stem: Pons, Midbrain, Medulla Oblongata Cerebellum Thalamus
Autonomic Nervous System Involuntary Two divisions –Sympathetic – fight-or-flight responses –Parasympathetic – body at rest
Somatic Nervous System Cranial and spinal nerves Reflexes – automatic responses to stimuli
Senses Chemoreceptors – chemicals Photoreceptors – light Mechanoreceptors – pressure, vibration
Chemoreceptors Taste – taste buds –Sweet –Salty –Bitter –Sour Olfaction - smell
Photoreceptors Vision Retina –Cones – color –Rods – black & white
Mechanoreceptors Hearing – vibration in cochlea Balance – semicircular canals in ears Touch – pressure, pain, heat, cold
Nervous System Jeopardy Test Review Game. BrainNeuronEyeEarMisc
Click on a lesson name to select. Chapter 33 Nervous System Section 1: Structure of the Nervous System Section 2: Organization of the Nervous System.
Chemical & Electrical Coordination Systems The Nervous System ……. Ch 36 Guide Life is in the eye of the beholder.
Nervous System. Cells of the Nervous System Neurons Dendrites Axons – Schwann cells Synapse Supporting cells – Glial cells – Astrocytes – Oligodendrocytes.
Brain Spinal cord Spinal Cord Sensory Nerves: Afferent Motor Nerves: Efferent Afferent: stimuli both internal and external Internal: Stretch Receptors.
The Nervous System AP Biology. The Nervous System Function: environment is constantly changing – nervous system detects those changes and helps the organism.
1 Warm Up: Define the following vocabulary word: meninges (pg 901) What do you think meningitis is? 1.
The Nervous System Chapter 22. Nervous System - Function Separated into Central and Peripheral Nervous Systems Separated into Central and Peripheral Nervous.
Nervous System Chapter 48, 49 Campbell & Reece 2 Principle Regulatory Systems: Endocrine & Nervous Nervous System: gives animals capacity for quick response.
The Nervous System Dont get nervous about the nervous system.
Functional Properties of Neurons Irritability – ability to respond to stimuli Conductivity – ability to transmit an impulse The plasma membrane at rest.
Section 36.1 Summary – pages Neurons conduct impulses throughout the nervous system. Neurons: Basic Units of the Nervous System Dendrite Axon.
NERVOUS SYSTEM CENTRAL NERVOUS SYSTEM (CNS) Brain Spinal Cord PERIPHERAL NERVOUS SYSTEM Cranial & Spinal Nerves Somatic -- supplies the skeletal muscles.
The Nervous System Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
Nervous Systems Structure of a Vertebrate Neuron.
“If I Only Had a Brain” H-15 Answers to homework.
9 weeks Test Jeopardy Test Review Game. ABCDE
The Nervous System Nervous System allows organisms to respond to external and internal stimuli - Consists of: –Brain and spinal cord – Central Nervous.
A system that controls all of the activities of the body. The nervous system is made of: The brainThe spinal cord The nervesThe senses.
NERVOUS SYSTEM. Introduction Most highly organized system of the body Most highly organized system of the body Fast, complex communication system that.
The Nervous System Chapter 3.1. CNS vs. PNS CNS: Central Nervous System CNS: Central Nervous System Brain and the spinal cord Brain and the spinal cord.
The Biological Perspective Chapter 2. Copyright © 2011 Pearson Education, Inc. All rights reserved. Chapter 2 Learning Objective Menu LO 2.1 What are.
C-Notes: Nervous System Stnd: 9b 05/13/2014 Objective: SWBAT Identify the components of the nervous system and how it mediates communication between different.
Slide 1 Mosby items and derived items © 2012 by Mosby, Inc., an affiliate of Elsevier Inc. Chapter 8 The Nervous System.
Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Chapter 7 The Nervous System.
Chapter Two The Biological Perspective. Biological Psychology --branch of psychology concerned with the links between biology and behavior. Neuroscience-
Human Anatomy & Physiology NERVOUS SYSTEM BioH 1.
The NERVOUS System. Functions of the Nervous System l Sensory –senses stimuli from both within the body and from the external environment l Integrative.
AIM: How does the Nervous System work and how does it help the body maintain homeostasis? DO NOW: What is the function of the nervous system? What are.
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