Transcript Unit 2 Notes: The Brain

Unit 2 Notes:
The Brain
(1) 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
(2) 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
(3) Frontal Lobe
• Speech Production (Broca’s Area)
• Concentration
• Problem Solving
• Planning
• Voluntary Muscle Control
(4) Parietal Lobe
• Interpretation of speech, sounds,
surroundings
• Skin sensations
(5) Temporal Lobe
• Interpret sensations
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Visual & Auditory Memory
Hearing function
Ability to learn + connect concepts
Includes:
– Thalamus
– Hypothalamus
– Pituitary Gland
– Corpus Collosum
– Limbic System
(6) Stuff In Your Temporal
• Thalamus = Sensory reception
• Hypothalamus =
Control Body Temperature, Maintain fluid + ion
levels, Regulates Metabolism, Sleep
• Limbic System = Emotions
• Pituitary = Regulate hormone secretion
• Corpus Collasum = Connective tissue between left
and right hemispheres
(7) Occipital Lobe
• Vision
• Combines images to make complete picture
(8) Cerebellum
• Coordinates muscle movement
• Maintains normal muscle tone
• DOES NOT MAKE
MUSCLES MOVE!
– Makes them move smoothly!
(9) Brain Stem
• Passes info between spinal cord + brain
• Includes:
– Midbrain
– Pons
– Medulla Oblongata
(10) Stuff in Brain Stem
• Midbrain:
– Fight or Flight responses (based of past)
– Helps with vision + auditory senses
• Pons:
– Respiratory Reflexes
– General Breathing Rate
• Medulla Oblongata:
– Maintains Homeostasis
– Heartbeat, Blood pressure, Digestive reflexes
– Also assists pons in respiration