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The 4 Major Parts Of The Brain

The 4 Major Parts Of The Brain. By Shelby Bursey Werlanka Pierre Janey Adams. Brain Stem. Size of a thumb. (approximately 3 inches) Made up of four structures: Midbrain Involved with vision and hearing Pons Controls breathing Medulla Oblongata

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The 4 Major Parts Of The Brain

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  1. The 4 Major Parts Of The Brain By Shelby Bursey Werlanka Pierre Janey Adams

  2. Brain Stem • Size of a thumb. (approximately 3 inches) • Made up of four structures: • Midbrain • Involved with vision and hearing • Pons • Controls breathing • Medulla Oblongata • Vital visceral activities (heart rate, BP, etc.) • Reticular formation • Motor control, involved with awake/sleep cycles.

  3. Cerebral Cortex • It is a layer of the brain, in the grey matter, • It covers 2/3 of the brain, • Responsible for: • Speech, • Memory, • Logical, • Emotion, • Consciousness, • Interpretation of sensation, • Voluntary movement.

  4. Cerebellum • The cerebellum has 2 hemispheres and a convoluted surface. • Made up of gray matter on the inside. Inner is made of white matter. • Gray because of the unmyelinated nerve fibers • White because it contains myelinated nerve fibers. • Provides the precise timing of skeletal muscle activity, and controls our balance and equilibrium. • The cerebellum is majorly affected when alcohol enters the body.

  5. Diencephalon • A.K.A the interbrain • Major structures include: • Thalamus • Relay station for sensory and pulses • Hypothalamus • Plays a role in regulation of body temp, water balance, metabolism • Epithalamus

  6. Cerebral Hemispheres • Most Superior part of the brain. • Larger than the brain stem, cerebellum, and diencephalon combined. • Encloses most of the brain stem. • The surface has elevated ridges of tissues called gyri, separated by shallow grooves called sulci. • Fissures separate large region of the brain.

  7. Cerebral Hemispheres • Each cerebral hemisphere has 3 basic regions: • Superficial cortex of gray matter • Internal white matter • Basal nuclei , • Which is islands of gray matter situated deep within white matter. • The Cerebral Hemispheres are separated into four main lobes:

  8. Frontal Lobe • The frontal lobe is responsible for: • Speech • Movement • Language comprehension

  9. Parietal Lobe • Responsible for: • Recognizing pain • Recognizing light • Recognizing touch • Controls sensory receptors

  10. Occipital Lobe • Responsible for: • Speech • Understanding languages • Eyesight

  11. Temporal Lobe • Responsible for: • Auditory (hearing) • General interpretation

  12. Sensory and Motor Areas of the Cerebral Cortex!

  13. BRAIN TEST 1)What are the four lobes of the brain? a. Temporal, Parietal, Cerebrum, Brain Stem b. Parietal, Temporal, Frontal, Occipital c. Cerebellum, Brain Stem, Cerebral Hemisphere, Cerebral Cortex d. Parietal, Occipital, Cerebral Hemisphere, Cerebellum

  14. BRAIN TEST 2) How many sections make up the Brain Stem? a. 5 b. 2 c. 1 d. 4

  15. BRAIN TEST 3) Which section of the brain is also known as the interbrain? a. Diencephalon b. Cerebellum c. Cerebral Hemisphere d. Endobrain

  16. BRAIN TEST 4) Which lobe of the brain is responsible for eyesight? a. Temporal b. Occipital c.Parietal d. Frontal

  17. BRAIN TEST 5) Which section of the brain makes up 2/3 of the brain? a. Medulla Oblongata b. Brain Stem c. Cerebral Cortex d. Frontal Lobe

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