C235_General Biology I_Human Perspectives Graded A

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SC235: General Biology I: Human Perspectives Case Study 1. Which receptor neuron is responsible for sending information from her finger to her peripheral nervous system? Our skin has general sensory... receptors that inform us about external temperature as well as light touch, pressure, and pain. 2. Is this receptor neuron, an afferent or efferent neuron? Afferent – toward an organ; in the nervous system neurons that carry information toward the Central Nervous System 3. Explain where the information from the receptor neuron is sent and how does it result in Amy moving her finger away from the stove. The pain sensory from the general sensory receptors in her fingers travels through the neurotransmitters to the central nervous system, mainly the brain. There the brain sends a signal back to the 4. Peripheral nervous system via the efferent neurons telling the muscles in the arm to pull the hand back away from the hot source. This automatic response by the body is in most cases an involuntary response to feeling a burning sensation in your fingers. All this happens within a split second from when her finger hits the source of heat. 5. How many neurons are typically involved in this response? What are the names of these neurons? There are two different types of neurons that are used in this response from the body. These are the afferent and the efferent neurons. The afferent neurons carry the signal to the brain and the efferent neurons carry the response back to the necessary part of the body that needs to know what is happening. This can be voluntary or involuntary depending on what is happening. [Show More]

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