BIOLOGY: CONCEPTS&INVEST. (LL)
5th Edition
ISBN: 9781264706983
Author: Hoefnagels
Publisher: MCG
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Chapter 34, Problem 4WIO
Summary Introduction
To explain:
The reason if one avoids taking fever reducing medications when ill, the consequences of overmedicating in a fever and the risk of allowing fever to rise too high.
Concept Introduction:
Fever is a state of the increase in the temperature of the body above the normal temperature of
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Read the situation below and draw a diagram or illustration on how a fever happens. When bacteria are destroyed by leuckocytes, pyrogens are released into the blood. Pyrogens reset the body’s thermostat to a higher temperature, resulting in fever. How might pyrogens cause the body temperature to rise? The hypothalamus maintains the set point for body temperature through reflexes that cause vasodilation and sweating when the body is too warm, or vasoconstriction and shivering when the body is too cold. It responds to chemicals from the body. When a bacterium is destroyed by phagocytic leukocytes, chemicals called endogenous pyrogens are released into the blood. These pyrogens circulate to the hypothalamus and reset the thermostat. This allows the body’s temperature to increase in what is commonly called a fever. An increase in body temperature causes iron to be conserved, which reduces a nutrient needed by bacteria. An increase in body heat also increases the activity of the animal’s…
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make recommendations for future research.
In each scenario, identify the stimulus, the response, and the type of feedback mechanisms.
1. You and your family are going to the beach because it is summer. However, minutes aftee swimming, your skin darkens.
STIMULUS:
RESPONSE:
FEEDBACK MECHANISMS :
2. The presence of fever indicates that your body is infected with pathogens that have entered your body. You know that this event may be triggered when you went outside on a rainy day wihtout your umbrella or raincoat.
STIMULUS:
RESPONSE:
FEEDBACK MECHANISMS :
3. Hydrochloric acid waa secreted by your stomach to aid in the chemical digestion of food. The presence of undigested materials signals your body to produce more hydrochloric acid so that digestion will proceed.
STIMULUS:
RESPONSE:
FEEDBACK MECHANISMS :
4. When tissue or blood vessel is torn or cut, the cells near the damaged part send out signals to activate platelets. As platelets begin to form a plug, more chemical signals are released to attract more…
Chapter 34 Solutions
BIOLOGY: CONCEPTS&INVEST. (LL)
Ch. 34.1 - Prob. 1MCCh. 34.1 - Prob. 2MCCh. 34.1 - Prob. 3MCCh. 34.1 - Prob. 4MCCh. 34.2 - List the categories of inn ate defenses.Ch. 34.2 - Describe the physical barriers to infection.Ch. 34.2 - How do white blood cells contribute to innate...Ch. 34.2 - Prob. 4MCCh. 34.2 - Prob. 5MCCh. 34.3 - Prob. 1MC
Ch. 34.3 - What are the two subdivisions of adaptive...Ch. 34.3 - Prob. 3MCCh. 34.3 - Prob. 4MCCh. 34.3 - Prob. 5MCCh. 34.3 - Prob. 6MCCh. 34.4 - Prob. 1MCCh. 34.4 - Prob. 2MCCh. 34.4 - Prob. 3MCCh. 34.5 - Prob. 1MCCh. 34.5 - Prob. 2MCCh. 34.5 - Prob. 3MCCh. 34.5 - Prob. 4MCCh. 34.6 - Prob. 1MCCh. 34.6 - Prob. 2MCCh. 34 - Prob. 1MCQCh. 34 - Histamine acts on the _____, causing redness and...Ch. 34 - Prob. 3MCQCh. 34 - The innate immune response is characterized by its...Ch. 34 - Prob. 5MCQCh. 34 - Prob. 6MCQCh. 34 - Why is the secondary immune response so much...Ch. 34 - Prob. 8MCQCh. 34 - Prob. 9MCQCh. 34 - Prob. 1WIOCh. 34 - Prob. 2WIOCh. 34 - Explain why a scraped knee increases the chance...Ch. 34 - Prob. 4WIOCh. 34 - Prob. 5WIOCh. 34 - Prob. 6WIOCh. 34 - Prob. 7WIOCh. 34 - Prob. 8WIOCh. 34 - Prob. 9WIOCh. 34 - Prob. 10WIOCh. 34 - Prob. 11WIOCh. 34 - Explain the difference between clonal deletion and...Ch. 34 - Prob. 1PITCh. 34 - Prob. 2PITCh. 34 - Circle the immune system components that a vaccine...Ch. 34 - How do lymph and lymph nodes fit into this concept...Ch. 34 - Where else might macrophages fit into this concept...
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