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Chapter 48 - AP Biology Jain Chapter 48 Guided Reading...

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AP Biology Name __Adeesh Jain ___________________ Chapter 48 Guided Reading Assignment 1. Compare and contrast the central and peripheral nervous systems. The central nervous system is the integration of the nervous system; it consists of the brain and spinal cord. On the other hand, the peripheral nervous system are the nerves that communicate with the central nervous system and the rest of the body. 2. How does the organization of the nervous system of a _____ compare with the organization of the nervous system of a ____? a. Hydra and insect A hydra has only a nerve net while an insect has a brain, ventral nerve cord, and ganglia. b. Hydra and flatworm A hydra only has a nerve net while the flatworm has an eye, brain, nerve cord, and transverse nerve. c. Leech and salamander A leech has a brain, ventral nerve cord and segmental ganglion, whereas a salamander has a bran, dorsal nerve cord and sensory ganglion. 3. What are the functions of the following: a. Sensory neurons—to transmit senses from sensors and deliver to brain b. Interneurons—to integrate sensory input and motor output c. Motor neurons—to transmit signals to muscle cells (for locomotion) d. Effector cells—muscle or gland cell that carries out response from motor neuron 4. Refer to the diagram below which demonstrates the activity surrounding a reflex response.
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List the steps of a reflex response in the knee starting at the sensory nerve cell to  effector (leg muscle).   Listed above.
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5. Describe the cells in the diagram below. What is their function? Be specific. They’re function is to transmit signals via axons and dendrites. 6. Why are glial cells important? They are important because they are essential for the structural integrity of the nervous system and for the normal functioning of neurons.
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