Parts of the Brain Presented by Raechel Davis

Parts of the Brain Presented by: Raechel Davis

6 Main Regions Cerebrum n Diencephalon n Midbrain n Pons n Medulla n Cerebrellum n

Formation of the Brain Stem Midbrain, Pons, and Medula are components. n Responsible for relaying signals to the Cerebrum and Cerebellum. n Involuntary & voluntary actions are produced from these 3 regions. n

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

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

2 Parts of the Diencephalon Thalamus Hearing Taste Vision Sensation Wakefulness Voluntary Motor Control n n n n Hypothalamus Autonomic nervous system Secretion from glands Heart rate Intestine movement Rage, Aggression Water balance n n n n

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

Cerebral Cortex

Components of: Basal Ganglia Caudate nucleus Putamen Globus palidus Sub thalamic nucleus n n n Limbic System Hippocampus Contributes to emotional states such as: fear, anger, rage, pleasure, and sorrow. Also assoc. with learning and memory capabilities. n n

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