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