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Nervous System: Reflexes & Brain Lobes
(1) Reflex Arc Reflex = Involuntary Movements to StimuliAlways happens same way Always triggered same way “Arc” = Predictable path message is sent Types of Reflexes: Autonomic Somatic
(2) Reflex Arc Pathway Receptor notices stimulus Organ is stimulatedSensory Neuron Motor Neuron Reflex
(3) Autonomic Reflexes Involuntary Movement of: Examples:Smooth Muscle (digestive) Cardiac Muscle Glands Examples: Spit Sweat Increased Blood Pressure
(4) Somatic Reflexes Involuntary Movement of Skeletal Muscle Examples:Touching a Hot Stove Knee-Jerk Reflex Touching a Sharp Object
(5) Brain Hemispheres Hemispheres = Different Sides of the BrainYOUR Right = Right Hemisphere Controls Left side of body YOUR Left = Left Hemisphere Controls Right side of body
(6) Brain Lobes Lobes = Different Regions of BrainEach Region has a unique set of functions Functions based on which neurons are connected where Perpendicular to hemisphere line = Sensory & Motor Division
(7) Frontal Lobe Speech Production (Broca’s Area) ConcentrationProblem Solving Planning Voluntary Muscle Control Broca = produces speech
(8) Parietal Lobe Interpretation of speech, sounds, surroundingsHelps formulate words Skin sensations Wernicke = speech interpretation
(9) Temporal Lobe Interpret sensations Visual & Auditory MemoryHearing function Ability to learn + connect concepts Includes: Thalamus Hypothalamus Pituitary Gland Limbic System
(10) Stuff In Your Temporal(Thalamus, Hypothalamus, Pituitary, Limbic) Control Body Temperature Maintain fluid + ion levels Induce sleep Regulate hormone secretion Limbic = emotions
(11) Occipital Lobe Vision Combines images to make complete picture
(12) Cerebellum Coordinates muscle movementMaintains normal muscle tone DOES NOT MAKE MUSCLES MOVE! Makes them move smoothly!
(13) Brain Stem Passes info between spinal cord + brain Includes:Midbrain Pons Medulla Oblongata
(14) Stuff in Brain Stem Fight or Flight responses (based on past)Helps with vision + auditory senses Maintains Homeostasis: Heartbeat Breathing rate Blood pressure Respiratory + Digestive reflexes
1 Warm Up: Define the following vocabulary word: meninges (pg 901) What do you think meningitis is? 1.
Brain Richard Goldman April 24, 2006 Frontal Lobe Parietal Lobe Thalamus Occipital Lobe Cerebellum Spinal Cord Pons Pituitary Gland Reticular Formation.
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The Meninges Dura mater - outermost layer Arachnoid mater - no blood vessels, in between layer (resembles a spider web) Pia mater -inner membrane, contains.
Nervous System Outline
The decision and communication center
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What helps you remember your part in a play?
Nervous System. Essential Questions How do the structures of the nervous system relate to its functions? How are other body systems interrelated to the.
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Brain Structures and Functions
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