Using your textbook, address the questions on the Front of this sheet. 1. Go to p. 563. What are the main jobs of the spinal cord? Explain. The spinal cord transmits nerve signals between the brain the the peripheral nervous system. 3. What can cause damage to the spinal cord? Explain and provide examples. Trauma such as car accidents or a severe blow of any kind. 4. Describe the roles of the brain as parts of the body’s nervous system. When discussing the brain, be sure to discuss what homeostasis is. The brain maintains suitable and stable conditions (homeostasis) within the body. Also the brain controls emotion, intellect, movement and processes sensory information. 6. What is the role of cerebrospinal fluid? Where does it come from? Cerebrospinal fluid cushions the brain and also helps with the exchange of nutrients and waste between the bloodstream and brain. 8. In the diagram to the right COLOR CODE & LABEL the SPINAL CORD, CEREBROSPINAL FLUID & MENINGES. Name______________________ Hr___ Date:________________ Due Date:______________ 2010/2011 2. Why are spinal cord injuries so rare? Explain. Vertebrae that make up the back bone surround and protect the spine. 4. What is the difference between paraplegia and quadriplegia? Paraplegia is the loss of movement in the lower body. Quadriplegia is the loss of movement below the neck. 5. How are brain capillaries different that those in the rest of the body? Brain capillaries are more selective in allowing nutrients and waste in and out of the blood stream to keep the sensitive brain tissue healthy. 7. Where are the meninges and what is their function? Meninges are connective tissues that cushion the brain for protection. Meninges (light blue outermost layer) Spinal Cord You may need to thicken the appearance of the meninges in order to make them visible! Cerebrospinal Fluid (bright turquoise layer) Name______________________ Hr___ Date:________________ Due Date:______________ 1. Using your textbook, address the questions BELOW! 2010/2011 Go to p. 574. In the table below, describe the functions of the SOMATIC & AUTONOMIC nervous systems. SOMATIC NERVOUS SYSTEM AUTONOMIC NERVOUS SYSTEM The voluntary nervous system which carries signals to and from muscles to the CNS. 2. Nerves that function without thought which control digestion, heartbeat, and the excretion of waste. In one sentence, describe the difference between these 2 divisions of the Peripheral Nervous System. The somatic nervous system functions voluntarily, while the autonomic system works without conscious thought. 3. To the left is the same diagram from YOUR textbook. use your own color coding scheme with bright, OBVIOUS COLORS! This will give you a great way to visualize the different divisions as the next section gets into GREATER detail about the Peripheral Nerves Autonomic Nervous System. Autonomic Nerves Somatic Nerves Sympathetic 3. Parasympathetic Enteric In the chart below, describe the functions of each of the Divisions of the Autonomic Nervous System. Then, below each description, list the specific actions of different areas of the body each CONTROLS! Put a STAR next to the name of the DIVISION that is generally controlled by the other 2. PARASYMPATHETIC DIVISION SYMPATHETIC DIVISION This system controls activities associated with rest and digestion. This system readies the body for the expenditure of energy such as strenuous exercise or an adrenaline rush. ENTERIC DIVISION ***** Enteric nerves control digestion including peristaltic muscle contraction and the secretion of enzymes. 4. Traditionally, the 2 divisions of the PERIPHERAL NERVOUS SYSTEM, Somatic & Autonomic, are ALWAYS working together to accomplish different tasks. Explain how they are both involved in maintaining your body temperature! Be specific. The autonomic nervous system can constrict blood vessels to reduce heat loss when you are cold. The somatic nervous system can heat the body by causing shivering.
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