Week 5 Virtual Lab report

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Psychology

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Feb 20, 2024

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Week 5 Nervous System- Sensation Learning Objectives: Understand the types of sensory neurons and their responses to different stimuli. Describe the response of a sensory receptor to chemical stimuli at the cellular level Introduction: The body is continually bombarded by stimuli from the changing environment. To respond successfully, the body must be able to interpret these stimuli. Sensory receptors enable us to make sense of these signals by converting them into nerve impulses which are then interpreted by the brain. Let’s see if we can learn enough about pain stimuli and how to block them in time to help our injured climber get back to safety! Assignments: Part 1 Labster “Sensory Transduction: Learn why you feel pain when you get hit by a rock” Have the lab report available to record data as you work through the lab. The theory section of the lab is a useful resource. Part 2 Complete the lab report. Nervous System Lab Report: Sensation 1. Record the information you learned about sensory receptors. (1 point each for total of 5 points) Type of Sensory receptor Stimulus Mechanoreceptor These detect mechanical forces such as touch, pressure, vibration, and stretch. Thermoreceptor The receptors detect a change in temperature. Photoreceptor These receptors detect light. Chemoreceptor These receptors detect chemicals. Nocioreceptor These receptors detect pain. 2. a. Why is capsaicin used in the experiment? (1.5 points)
Capsaicin was needed when describing the nociceptors that respond to pain from heat. I was able to observe how Capsaicin caused the TRPV1 channel to change conformation so that it was open. This allowed a flow of positive ions through the channel and into the sensory neuron. b. What is capsaicin? (1.5 points) Capsaicin is a natural compound found in chili peppers. This is the component that causes spicy or hot sensations after consumption of these peppers. 3. Which of the sensory receptors plays a key role in homeostasis? (2 point) These include: - Thermorecptors - Chemoreceptors - Osmoreceptors - Mechanoreceptors - Proprioceptors - Photoreceptors - Baroreceptors 4. Which of the receptors would be found in joints, ligaments, tendons and muscle? (1 point) The proprioceptors are found in one’s joints, ligaments, tendons, and muscles. 5. Where in the body would you find photoreceptors? (1 point) You would find photoreceptors in the eye, more specifically, the retina, which is the inner layer of the eye.
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