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Chapter 7 Part II The Nervous System (pp. 215-228)

Chapter 7 Part II The Nervous System (pp. 215-228). Central Nervous System (CNS). Your brain and spinal cord make up your CNS During development of a fetus the CNS appears as a simple tube-called a neural tube. Your brain is the complex mass of nerve tissue in the body.

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Chapter 7 Part II The Nervous System (pp. 215-228)

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  1. Chapter 7 Part II The Nervous System (pp. 215-228)

  2. Central Nervous System(CNS) • Your brain and spinal cord make up your CNS • During development of a fetus the CNS appears as a simple tube-called a neural tube. • Your brain is the complex mass of nerve tissue in the body.

  3. There are 4 Regions of your brain • Cerebral hemisphere • Diencephalon (die-an-ceff-o-lon) • Cerebellum • Brain Stem

  4. Cerebral Hemisphere5 facts • Speech. memory, logical, emotional responses, your consciousness, and voluntary movement are located here • The CB is separated by the longitudinal fissure • Larger then all the brain areas combined • Enclosed most of the brain stem • Entire surface is made up of ridges called Gyri (Ji rye) and grooves are called Sulci (sul cy)

  5. Diencephalon (interbrain)4 Facts • Thirst, appetite, sex, pain, and pleasure centers are located here. • Thalamus, hypothalamus, and epithalamus are the three major structures • Hypothalamus regulates body temperature, water balance, and your metabolism. • Hypothalamus regulates the pituitary gland.

  6. Cerebellum4 Facts • Is like an autopilot making sure that the brains wants to do with what is actually going on. • Controls our balance and provides precise timing to our skeletal muscles so we can move correctly and move smoothly and coordinated. • Located below your Cerebral hemisphere and looks like a cauliflower • Has two hemispheres

  7. Brain Stem3 facts • About the size of your thumb • Has three parts to it (midbrain, pons, and the medulla oblongata • Control your breathing and blood pressure

  8. Spinal Cord (2nd part of the CNS) • About 17 inches long • Is the “highway” that runs messages to and from the brain to your body • Has 31 pairs of spinal nerves that come out of it • Your spinal cord ends before it reaches your backbone because the bones grow faster then your spinal cord does.

  9. Be prepared for Exam on Thursday • Study and understand the material.

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