Parts of the Brain

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Parts of the Brain

• Presented by Raechel Davis

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6 Main Regions

• Cerebrum
• Diencephalon
• Midbrain
• Pons
• Medulla
• Cerebrellum

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Formation of the Brain Stem

• Midbrain, Pons, and Medula are components.
• Responsible for relaying signals to the Cerebrum
  and Cerebellum.
• Involuntary voluntary actions are produced from
  these 3 regions.

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The Medulla

• Highway between the brain and spinal cord.
• Various nuclei transmit nerve impulses that
  control
• - heart rate - sneezing
• - swallowing - blood pressure
• - constriction and dilation of blood vessels

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Cerebrum

• Lower posterior portion.
• Responds to signals from muscles, tendons,
  joints.
• Controls skeletal muscle contractions,
  maintaining coordination, muscle tone, balance,
  and posture.

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2 Parts of the Diencephalon

• Thalamus
• Hearing
• Taste
• Vision
• Sensation
• Wakefulness
• Voluntary Motor Control

• Hypothalamus
• Autonomic nervous system
• Secretion from glands
• Heart rate
• Intestine movement
• Rage, Aggression
• Water balance

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Cerebral Cortex

• Human consciousness, motor skills, language,
  imagination are vital functions.
• Within each hemisphere there are a number of
  nuclei.
• The Basal Ganglia and Limbic System contain a
  number of different nuclei and sub divisions.

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Cerebral Cortex
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Components of

• Basal Ganglia
• Caudate nucleus
• Putamen
• Globus palidus
• Sub thalamic nucleus

• Limbic System
• Hippocampus
• Contributes to emotional states such as fear,
  anger, rage, pleasure, and sorrow.
• Also assoc. with learning and memory
  capabilities.

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Reference

• Pasternak, Jack J., An Introduction to Human
  Molecular Genetics. Wiley-Liss, Hoboken, New
  Jersey, 2005.