To review:
Whether the following statements are true or false:
a. Conduction is energy transfer between the body and the environment via
b. Thermoreceptors send temperature information to centers in the hypothalamus.
c. Heat-loss mechanisms include sweating and vasodilation of the blood vessels in the skin.
d. The body temperature measured on the skin or in the mouth is generally higher than the core body temperature.
Introduction:
Thermoregulation is the regulation of body temperature in order to maintain effective functioning of all the systems or organs, by means of the negative feedback loop.
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- Which of the following mechanisms could both be used by the body to increase body temperature if a person forgets a coat on a cold day? A. Superficial blood vessels dilate, and the thyroid decreases metabolism. B. Superficial blood vessels constrict, and the thyroid decreases metabolism. C. Superficial blood vessels dilate, and the thyroid increases metabolism. D. Superficial blood vessels constrict, and the thyroid increases metabolism.arrow_forwardWhen the environmental temperature is higher than its body temperature, a toucan (a bird with a very large beak) will increase heat loss by... A. Increasing blood flow to the beak to shed heat by radiation and convection B. Moving to a breezy location to take advantage of convective heat loss C. Gular fluttering D. Lowering heat generated via brown adipose tissue E. All of the abovearrow_forwardWhich of the following statements about metabolic heat is true? A. Relative to their body size, animals that maintain body temperature by metabolic heat production have lower metabolic rates than animals that do not use metabolic heat to maintain body temperature B. Metabolic heat is the product of inefficiencies in the biochemistry of life C. Homeotherms rely on metabolic heat to maintain body temperature D. Relative to their body size, larger animals lose more metabolic heat to the environment than smaller animals E. All of the above are truearrow_forward
- Outline 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_forwardDiscuss the causes ,signs and symptoms and treatment of three major homeostatic imbalances under each of the following systems; a.Digestive system b.urinary system c.integumentary system d.cardiovascular system e.respiratory system f.nervous system g.endocrine system h.reproductive systemarrow_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
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- which of the following statements are true about homeostasis? Select all that apply. a. The selective permeability of the cell membrane allows for thermoregulation. b. Homeostasis is an organism‘s way of maintaining constant and balanced internal processes. c. Ectotherms rely on environmental heat to maintain homeostasis. d. Homeostasis works by a system of positive feedback.arrow_forwardAn elderly gentleman has recently been diagnosed with cirrhosis of the liver. He admits to being a heavy drinker. This man is your patient. Given the damage to his liver, you would have concerns about all of the following except a. regulating his ability to maintain body temperature, because of decreased thyroid hormone levels. b. internal bleeding, because he has impaired ability to synthesize clotting proteins. c. edema, because of impaired synthesis of plasma proteins (e.g., albumin). d. jaundice, because his liver is less efficient at removing bilirubin from the blood.arrow_forwardMatch the appropriate anthropometric measurement tool used for body composition to the correct definition. B. Hydrostatic, or Underwater Weighing A. This device measures the electrical impedances of body tissues and can be used to assess fluid volumes, total D. v Air displacement plethysmography body water, and fat-free-mass, and through estimates, percent body fat. A. Bioelectrical Impedance Analysis (BIA) C. Dual X-Ray absorptiometry (DXA) B. This technique determines total body volume - the volume of empty chamber minus volume of chamber with subject C. This device measures the transmission of X-Ray through the body at high and low energies. The tool measures the absorption (attenuation) of two X-ray photon energies, which allows the distinguishing of bone from soft tissue. D. A common research technique used to determine whole body density. Uses the principle that states the volume of an object submerged in water equals the volume of water the object displaces. Percentage of body…arrow_forward
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