1 / 41

Decoding the Nervous System: Body's Control Center and Homeostasis Maintenance

Learn the functions of the nervous system, including regulation and maintaining homeostasis. Identify messages, receptors, stimuli, and sense organs. Explore different types of receptors and how they respond to stimuli. Understand the role of effectors and their examples. Watch a video to identify responses and effects on structures. Test your knowledge with scenarios and summarize the key concepts.

jessiemoore
Download Presentation

Decoding the Nervous System: Body's Control Center and Homeostasis Maintenance

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Topic: Nervous System Aim: Explain the function of the nervous system. Do Now: • Take out the ISA homework. • Which GAS (CO2 or O2) do you think controls your breathing rate? Observe the diagram on the next slide and discuss this with your neighbor. HW: Introduction to the NS worksheet Castle Learning Respiratory and Excretory Systems due Tuesday, March 1st.

  2. Which gas regulates or controls your breathing rate? CO2

  3. 1. Describe the function of the nervous system. • Body’s control center • REGULATION • Maintains homeostasis

  4. 2. Identify the electro-chemical messages in the NS. • Impulses

  5. 3. Identify structures that detect changes in the environment. • Receptors

  6. 4. Identify the changes in the environment detected by receptors. • Stimuli

  7. Identify the stimulus. Support your answer. • The pin

  8. Identify the stimulus. Support your answer. • The hammer

  9. 5. Identify the sense organs receptors are located in. • Skin, tongue, ears, eyes, nose

  10. 7. Identify the different types of receptors. • Mechanoreceptors • Photoreceptors • Thermo-receptors • Pain receptors • Osmoreceptors • Chemoreceptors

  11. 4. Which stimulus does the skin detect? • Touch, pressure, pain and temperature • Mechanoreceptors • Thermo-receptors

  12. The diagram represents the number temperature receptorsin the skin throughout the body. • Identify the parts of the body that detect temperature the most? • Identify the parts of the body that detect temperature the most?

  13. 5. Which stimulus does your tongue detect? • Chemicals in food • Chemoreceptors

  14. 6. Which stimulus do your ears detect? • Sound • Mechanoreceptors

  15. 7. Which stimulus do your eyes detect? • Light • Photoreceptors

  16. Let’s take a look at the structure of the eye.

  17. In the dark In the light

  18. 8. Which stimulus do your nose detect? • Chemicals in the air • Chemoreceptors

  19. What do one eye say to the other eye??????? There is something between us that smells.

  20. 9 or 10. What is a response? • A reaction to a stimulus

  21. Watch the following video. Identify the response of the ship. http://www.youtube.com/watch?v=qliI4LXdqpQ

  22. 8 or 10. Identify the structure that produces a response. • Effectors

  23. 9 or 11. Identify three examples of effectors. • Muscle contracting to move an arm

  24. Muscle squeezing saliva from a salivary gland

  25. Gland releasing a hormone into the blood

  26. Observe the animation. Identify the stimulus, receptor, effector and the response.

  27. Path of an impulse Receptor Nerve cell Effector

  28. To regulate all life processes. Let’s summarize… • Describe the function of the nervous system. 2. What kind of message is an impulse? 3. Identify the change in the environment your body detects. 4. Identify the structures that detect stimuli. 5. Identify the reaction to a stimulus. 6. Identify the structures that produce a response. 7. Identify an example of an effector. Electro-chemical Stimulus Receptors Response Effectors Muscle or gland

  29. A student accidentally places her hand on a tack and quickly pulls her hand away. The tack represents • A stimulus • An impulse • A response • An effector

  30. Structures that detect stimuli are called • impulse • responses • effectors • receptors

  31. Structures that produce a response to a stimulus are called • impulse • responses • effectors • receptors

  32. A change that initiates an electrochemical message along a neuron is known as • a stimulus • a response • an impulse • a synapse

  33. When a child runs to his mother after hearing a clap of thunder, the clap of thunder would serve the nervous system role of acting as a(n) • stimulus • response • effector • receptor

  34. Adding one drop of dilute hydrochloric acid to the water surrounding a hydra caused the hydra to contract. The acid acted as • a response • a stimulus • a neurotransmitter • an impulse

  35. Homeostasis in living things is regulated by the action of • The nervous system, only • The endocrine system, only • Both the nervous and endocrine systems • Neither the nervous nor the endocrine system

More Related