Nervous system and its major parts (lesson 6)
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The document discusses the nervous system and its major parts. It identifies the brain, spinal cord, and neurons as the key components. The brain is made up of the cerebrum, cerebellum, and medulla oblongata. The cerebrum is the largest part and controls complex functions. The spinal cord connects the peripheral nervous system to the brain and transmits nerve impulses. Neurons are the basic unit of the nervous system and form a network to send and receive messages throughout the body.
Nervous system and its major parts (lesson 6)
- 1. NERVOUS SYSTEM AND ITS MAJOR PARTS By: Jenil Urianza-Moises
- 2. OBJECTIVE Identify the nervous system and its major parts
- 3. The NERVOUS SYSTEM is the part of the body that coordinates its voluntary and involuntary actions and transmits signals to and from the different parts of the body.
- 5. 1. BRAIN is made up of billions of nerve cells
- 7. CEREBRUM is the principal and most anterior part of the brain in vertebrates, located in the front area of the skull and consisting of two hemispheres, left ad right, separated by a fissure.
- 8. It is responsible for the integration of complex sensory and neutral functions and the initiation and coordination of voluntary activity in the body.
- 9. CEREBELLUM or little brain is involved in some cognitive functions such as attention and language and in regulating fear and pleasure responses.
- 10. MEDULLA OBLONGATA is a cone-shaped neuronal mass responsible for multiple autonomic (involuntary) functions ranging from vomiting to sneezing.
- 11. 2. SPINAL CORD is a long slender nerve that is connected to the medulla and goes down to the spinal column or backbone.
- 12. It carries out two main functions: 1. it connects a large part of the peripheral nervous system to the brain. 2. Information (nerve impulses) reaching neurons are transmitted up into the brain.
- 13. 3. NERVE CELL OR NEURON is the basic unit of structure in the nervous system. It forms a network to receive and send messages.
- 15. EVALUATION Match column A with column B. Column A Column B 1. Spinal Cord a. It is the control center of the body 2. Nerves b. carry nerve impulses from one part of the body to another 3. Backbone c. protects the spinal cord 4. Brain d. it is the channel through which messages travel from the nerves in the different parts of the body to the brain at the back 5. Cerebrum e. largest part of the brain f. controls the movement of muscles
- 16. ASSIGNMENT Make a crossword puzzle about the parts of the nervous system. References: RBEC-PELC 4.1 p.4 Science for Better Health and environment, pp. 40-41 by Efrain E. Abracia 21st Century Science and Health, pp. 23-24 by Gloria Salandanan