Human Physiology: From Cells to Systems (MindTap Course List)
9th Edition
ISBN: 9781285866932
Author: Lauralee Sherwood
Publisher: Cengage Learning
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Question
Chapter 1, Problem 5TAHL
Summary Introduction
To analyze:
The widening and the narrowing of the blood vessels due to intensive exercising.
Introduction:
The body operates by many feedback signals, which come from the various parts of the body. These feedbacks can be either negative regulators (negative feedback) or positive regulator (positive feedback). The regulation of the temperature balance is an example of a negative regulator, as the heat increases in the body, it triggers a decrease in temperature and vice versa.
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Chapter 1 Solutions
Human Physiology: From Cells to Systems (MindTap Course List)
Ch. 1.1 - Define physiology.Ch. 1.1 - The nutrient-absorbing intestinal cells have a...Ch. 1.2 - Prob. 1CYUCh. 1.2 - Prob. 2CYUCh. 1.2 - Prob. 3CYUCh. 1.3 - Distinguish among external environment, internal...Ch. 1.3 - Prob. 2CYUCh. 1.3 - Prob. 3CYUCh. 1.4 - Prob. 1CYUCh. 1.4 - Prob. 2CYU
Ch. 1.4 - Draw a row diagram showing the relationships among...Ch. 1 - Which of the following activities is not carried...Ch. 1 - Prob. 2RECh. 1 - Which of the following is not a type of connective...Ch. 1 - The term tissue can apply either to one of the...Ch. 1 - Cells in a multicellular organism have specialized...Ch. 1 - Cell specializations are usually a modification or...Ch. 1 - The four primary types of tissue are...Ch. 1 - Prob. 8RECh. 1 - Prob. 9RECh. 1 - _________ controls are inherent to an organ,...Ch. 1 - Prob. 11RECh. 1 - Compare physiology and anatomy.Ch. 1 - Prob. 2UCCh. 1 - Prob. 3UCCh. 1 - Prob. 4UCCh. 1 - What factors must be homeostatically maintained,...Ch. 1 - Prob. 6UCCh. 1 - Prob. 7UCCh. 1 - Prob. 1ACRCh. 1 - Prob. 1TAHLCh. 1 - Prob. 2TAHLCh. 1 - The hormone insulin enhances the transport of...Ch. 1 - Prob. 4TAHLCh. 1 - Prob. 5TAHL
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- Figure (2) below, shows the relations between all factors that should be at minimat amount of body regulation to achieve thermal equilibrium, towards establishing the physiological basis of comfort. in the same Figure, symbol (B) represents: Celius 20 25 700 600 130 300 100 100 00 70 AMBIENT TEMPERATUREF 100 110 Figure (2) ORadiation O Convection OMetabolism Evaporation STUK BOOYLOSssor GAINarrow_forwardHeat exchange with the environment depends on the surface area-to-volume ratio of the body. Assuming that the body shape of an animal is at least somewhat spherical, a considerable decrease in body size would the surface area-to-volume ratio, and the ability to exchange heat with the environment would A. increase; increase B. increase; stay about the same C. increase; decrease D. decrease; increase E. decrease; stay about the samearrow_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
- In mammals, body temperature is controlled by a structure in the brain called the hypothalamus. The hypothalamus is able to sense even slight variations in body temperature. This structure is responsible for bodily responses that include thirst, the activation of sweat glands, and the dilation of blood vessels near the skin. Each of these mechanisms works to restore body temperature to a normal range.arrow_forwardThe feedback loop shown below is an example of negative feedback that uses the narrowing and widening of blood vessels in the skin to regulate body temperature. DIRECTIONS: Label the diagram using the words or phrases from the word bank. Then answer the questions that follow. body temperature falls body temperature rises normal body temperature vasoconstriction vasodilation Feedback: Feedback: Response: ACY MENT CHA RICH OF EATIO Response: EX Stimulus: Increase in Body Temperature Stimulus: Decrease in Body Temperaturearrow_forwardImagine you are sick and you have fever. Sensors on the skin and brain detect this and communicate with the temperature regulatory center in the brain which then sends out a command to the sweat glands of your body as a result of which you start sweating and in about 15 mins your body temperature comes back to normal for the time being. This this feedback loop, identify the following: sensors control center effector stimulus responsearrow_forward
- In the negative feedback system for regulation of body temperature. Identify the following. 1. Stimulus 2. Receptor 3. Control Center 4. Effector 5. Responsearrow_forwardDescribe the steps in the homeostatic feedback system activated to ensure normal body temperature is maintained when exposed to a hot external temperature (e.g., 42 degrees Celsius). Give typing answer with explanation and conclusionarrow_forwardOutline the events that shows the negative feedback loop that happens when you (choose only one): get a wound, consume too much sugar, get hot by being in a humid place, feel cold, drink too much water, touch a hot surface, get pinched or pricked, or are in a poorly lit room. You are encouraged to do research on the mechanisms that enables the responses for these.arrow_forward
- Jamie has fallen ill. Her body temperature has risen to high levels. Her blood pressure is high and her glucose level is low. In order for her body to return to homeostasis and for Jamie to feel better, the following events are taking place: Select all that apply Dilating blood vessels reduce blood pressure Lowering her body temperature by sweating Raise her body temperature by sweating Apply positive feedback to restore glucose levels in the blood stream by using the hormone glucagon which will raise blood sugar Apply negative feedback to restore glucose levels in the blood stream by using the hormone glucagon which will raise blood sugar Constricting blood vessels to increase blood pressurearrow_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_forward*our body is tightly regulated to maintain an internal (core) temperature of 98.6 degrees F. Your body does not function properly if you get too hot or too cold, partially because protein enzymes get too "stiff" (cold temperatures) or denatured (hot temperatures). If blood temperature rises too high, this is sensed by specialized neurons in the brain. They signal other herve centers, which in turn send signals toʻthe blood vessels of the skin. As these blood vessels dilate, more blood flows close to the body surface and excess heat radiates from the body. If this is not enough to cool the body back to its set point, the brain activates sweating. Evaporation of sweat from the skin has a strong cooling effect, as we feel when we are sweaty and stand in front of a fan. In this example, the brain is a(n): а. гесеptor b. control center nent C. effector eweet alands, are a(n):arrow_forward
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