a.
To define: Cooling mechanisms that are activated when hypothalamus senses increased body temperature above-set point.
Introduction: The level at which the body attempts to maintain its temperature is known as temperature set point. When the set point increases, it results in fever. When the set-point is not increased but the temperature is increased, the outcome is hyperthermia.
b.
To define: Mechanisms that are activated when the hypothalamus senses the temperature below the set point.
Introduction: The hypothalamus works together with other organs of the body in controlling temperature. Temperature is essential for the body to carry out all the
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Study Guide for Campbell Biology
- What detects a change in core body temperature?arrow_forwardWhich of the following responses is an effector activated by the hypothalamus when the body temperature is lower than the set point? Group of answer choices move to a warmer location or put on a sweater skeletal muscles contract sweat glands initiate sweating skin blood vessels dilatearrow_forwardWhich of the following responses is an effector activated by the hypothalamus when the body temperature is lower than the set point? skin blood vessels dilate skeletal muscles contract move to a warmer location or put on a sweater weat glands initiate sweatingarrow_forward
- How is the brain involved in the regulation of body temperature?arrow_forwardHelp me pleasearrow_forward1. Octavius has been working outside all day under a scorching sun. As his body temperature climbs, his sweat glands release more and more sweat, releasing more heat. The release of heat and the effect of sweat on the skin cools the body back down. The temperature regulating organ is the hypothalamus and it controls the body’s response to increases and decreases in body temperature. a. What is the stimulus?b. What is the control center?c. Identify the control center’s response to the stimuli?d. Does the response stop/reverse the stimuli or enhance the stimuli?e. Is the body’s response a negative or positive feedback?arrow_forward
- Which of the following responses is an effector activated by the hypothalamus when the body temperature is lower than the set point? a. skeletal muscles contract b. sweat glands initiate sweating c. skin blood vessels dilate d. move to a warmer location or put on a sweaterarrow_forwardHow does heat stroke relate to homeostasis?arrow_forwardFor the following physiological events, identify the following components of homeostatic control Variable Stimulus Receptor Input Control center Output Effector Response Thyrotropin-releasing hormone (TRH) is a hormone regularly released by the hypothalamus. Once released, it then stimulates the anterior pituitary gland causing it to release thyroid stimulating hormone (TSH). TSH then stimulates the thyroid gland to release the hormones T3 and T4. T3 and T4 have two main effects. First, they increase overall metabolism. Secondly, T3 and T4 can bind to these receptors on the hypothalamus and anterior pituitary, inhibiting the production of TRH and TSH respectively.arrow_forward
- What is the physiological basis of the phenomenon called "shifting of physiological zero?"arrow_forwardThe _____ is an area of the hypothalamus that initiates eating and controls several aspects of feeding behavior and metabolic processes. It controls chewing and swallowing, salivation, gastric juice secretion, and insulin production. It also arouses the cortex, causing increased locomotion and food-seeking behavior. A) lateral hypothalamus B) suprachiasmatic nucleus C) subfornical nucleusarrow_forwardIn the negative feedback system for regulation of body temperature. Identify the following. 1. Stimulus 2. Receptor 3. Control Center 4. Effector 5. Responsearrow_forward
- Human Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage Learning