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Nervous System: Reflexes & Brain Lobes

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Presentation on theme: "Nervous System: Reflexes & Brain Lobes"— Presentation transcript:

1 Nervous System: Reflexes & Brain Lobes

2 (1) Reflex Arc Reflex = Involuntary Movements to Stimuli
Always happens same way Always triggered same way “Arc” = Predictable path message is sent Types of Reflexes: Autonomic Somatic

3 (2) Reflex Arc Pathway Receptor notices stimulus Organ is stimulated
Sensory Neuron Motor Neuron Reflex


5 (3) Autonomic Reflexes Involuntary Movement of: Examples:
Smooth Muscle (digestive) Cardiac Muscle Glands Examples: Spit Sweat Increased Blood Pressure

6 (4) Somatic Reflexes Involuntary Movement of Skeletal Muscle Examples:
Touching a Hot Stove Knee-Jerk Reflex Touching a Sharp Object

7 (5) Brain Hemispheres Hemispheres = Different Sides of the Brain
YOUR Right = Right Hemisphere Controls Left side of body YOUR Left = Left Hemisphere Controls Right side of body


9 (6) Brain Lobes Lobes = Different Regions of Brain
Each Region has a unique set of functions Functions based on which neurons are connected where Perpendicular to hemisphere line = Sensory & Motor Division


11 (7) Frontal Lobe Speech Production (Broca’s Area) Concentration
Problem Solving Planning Voluntary Muscle Control Broca = produces speech

12 (8) Parietal Lobe Interpretation of speech, sounds, surroundings
Helps formulate words Skin sensations Wernicke = speech interpretation

13 (9) Temporal Lobe Interpret sensations Visual & Auditory Memory
Hearing function Ability to learn + connect concepts Includes: Thalamus Hypothalamus Pituitary Gland Limbic System


15 (10) Stuff In Your Temporal
(Thalamus, Hypothalamus, Pituitary, Limbic) Control Body Temperature Maintain fluid + ion levels Induce sleep Regulate hormone secretion Limbic = emotions

16 (11) Occipital Lobe Vision Combines images to make complete picture

17 (12) Cerebellum Coordinates muscle movement
Maintains normal muscle tone DOES NOT MAKE MUSCLES MOVE! Makes them move smoothly!

18 (13) Brain Stem Passes info between spinal cord + brain Includes:
Midbrain Pons Medulla Oblongata

19 (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

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