Internal Brain Structures Unit 2 Lesson 4. Objectives Identify organization, function, and location...
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Transcript of Internal Brain Structures Unit 2 Lesson 4. Objectives Identify organization, function, and location...
![Page 1: Internal Brain Structures Unit 2 Lesson 4. Objectives Identify organization, function, and location of major brain structures. Explain how damage would.](https://reader031.fdocuments.net/reader031/viewer/2022013004/5697bfa81a28abf838c99738/html5/thumbnails/1.jpg)
Internal Brain Structures
Unit 2
Lesson 4
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Objectives
Identify organization, function, and location of major brain structures.
Explain how damage would impact function.
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Review
NeuronsNervous SystemCerebral Cortex
2 halves4 lobes each side
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Review Cont…
Which hemisphere? Right side of body?
Creativity, art & music?
Following directions?
Talking and writing?
Left side of body?
Picking people out of a crowd?
Which lobe? Reasoning, movement?
Vision?
Sensory info?
Hearing and memory?
Communication between halves?
When damaged/severed?
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Internal Structures of Brain
Begins as a tube of tissue
Brain organized into three main parts:HindbrainMidbrainForebrain
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Hindbrain
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Hindbrain
Brainstem Where spinal cord meets
brain; includes following structures:
Medulla (Oblongata) Regulates vital functions
rate, blood flow, respiration
Role in sleep, sneezing, coughing, vomiting
Pons Transmits info about body
movement Role in attention, sleep,
respiration
Reticular Activating System (RAS)… EEG arousal Sleep/wake cycle
(midbrain)
Cerebellum “Little Brain” Balance, posture, muscle
coordination
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Midbrain- A Bit Player
Control of eye movement
Involuntary muscle tone
RAS…sleep/wake cycle
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Forebrain
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Forebrain
Thalamus Relays incoming sensory info
to the cortex
Hypothalamus Control ANS and endocrine
system Maintains homeostasis Sets drives (thirst, hunger,
desire)
Pituitary Gland Master Gland…more later
Limbic System Emotional expression… Hippocampus- long-term
memory , learning Amygdala- attach emotion to
event, mediates aggressive behavior
Cerebrum 80% of forebrain Divided into 2 hemispheres,
connected by corpus callosum, and 4 lobes
Responsible for higher mental functions (ex: thought)
Covered by cerebral cortex
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Brain Activities:
Match the structure to its function as a review.
Use your book to guess what could happen if each area is damaged.
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The Minds of Girls
Larger corpus callosum- Leads to more cross talk between hemispheres.
Stronger neural connections- Leads to better listening skill, more richly detailed memory
Larger hippocampus- Increases girls learning advantage esp. in language arts.
Prefrontal cortex is more active- making them less impulsive.
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The Minds Of Boys
Have more cortical areas dedicated to spatial-mechanical functioning- Makes boys want to move around, throw and object
Less serotonin and oxytocin- Makes boys more impulsive.
Boys lateralize brain activity- Boys compartmentalize learning. Less multitasking.
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Closure
What are the three main parts of the brain?