HUMAN BIOLOGY:CONC.+CURR...-PACKAGE
8th Edition
ISBN: 9780134717029
Author: Johnson
Publisher: PEARSON
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Chapter 4, Problem 10TY
Summary Introduction
Introduction:
The organisms are affected by their external environment from time-to-time. This results in changes in the internal environment of the organisms such as a change in the body temperature, blood pressure, and glucose level. Thus, it is necessary to maintain the homeostasis within the body to allow normal functioning of the organs.
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which of the following situations illustrates that a homeostatic mechanism is not operating properly?
a. acute high blood pressure
b. normalized blood glucose levels
c. dailt fluid intake equals dailty fluid output
d. all of these illustrate homestatic mechanisms operating properly
Which of these statements about homeostasis is true? a.The internal environment is maintained absolutely constant. b.Negative feedback mechanisms act to correct deviations from a normal range within the internal environment. c.Homeostasis is maintained by turning effectors on and off. d.All of these are true.
What could happen due to a failure in homeostasis?
Select one:
a. The accumulation of waste products.
b. The loss of excess water from the body.
c. Maintaining excess levels of sugar in the body.
d. All of the above are potential outcomes of failure of homeostasis.
Chapter 4 Solutions
HUMAN BIOLOGY:CONC.+CURR...-PACKAGE
Ch. 4 - Health clinics sometimes cite retrospective...Ch. 4 - How important to you is FDA approval and/or...Ch. 4 - Describe some advantages and disadvantages of...Ch. 4 -
2. Name the four main types of tissues in the...Ch. 4 - Prob. 3CRCh. 4 - Prob. 4CRCh. 4 - List the 11 organ systems of the body and give at...Ch. 4 -
6. Define interstitial fluid.
Ch. 4 - Name the two cavities of the anterior body cavity...Ch. 4 - Prob. 8CR
Ch. 4 - Discuss the purpose of homeostasis in the body.Ch. 4 - Prob. 10CRCh. 4 -
1. Collagen and elastin fibers are typically...Ch. 4 -
2. Cells in cardiac muscle are able to contract...Ch. 4 - Which of the following membranes is not composed...Ch. 4 -
4. Exocrine and endocrine glands are types...Ch. 4 - Prob. 5TYCh. 4 - What property do all muscle tissues have in...Ch. 4 -
7. Injury to bone heals more quickly than injury...Ch. 4 - Which of the following tissues may be found in the...Ch. 4 - Which of the following is responsible for skin...Ch. 4 - Prob. 10TYCh. 4 - Prob. 11TYCh. 4 - Prob. 12TYCh. 4 - A substantial amount of nonliving extracellular...Ch. 4 - Prob. 14TYCh. 4 - Reducing food intake may lead to weight loss by...Ch. 4 -
1. Your roommate says that the concept of...Ch. 4 - What do you think would be some of the problems...Ch. 4 - Sherlock Holmes, the greatest fictional detective...Ch. 4 -
4. Dieting is difficult. People who do manage to...Ch. 4 - Fibrous connective tissue consists of ground...Ch. 4 -
6. By definition, an organ is a structure...
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Similar questions
- Which of these is an example of negative feedback?a. Air conditioning switches off when room temperature lowers.b. Insulin decreases blood sugar levels after eating a meal.c. Heart rate increases when blood pressure drops.d. All of these are examples of negative feedback.arrow_forwardThe presence of a full bladder triggers the bladder to contract. As a little urine is released, this causes more contractions, which will completely empty the bladder. This is an example of: a. homeostatic regulation b. uroregulation c. negative feedbackd. positive feedback e. reverse feedbackarrow_forwardWhich of the following animals would you predict to have the lowest vitamin D3 requirement? Select one: a. Desert lizard and forest salamander because they are both ectotherms b. Forest salamander c. Human d. Howler monkey e. Desert lizardarrow_forward
- What does negative feedback do? a. It establishes a set point. b. It changes the set point. c. It eliminates the set point. d. It reduces discrepancies from a set point.arrow_forwardWhich is an example of a feedback mechanism in the body?a. The decrease in oxygen levels in the blood after exercise.b. The use of energy when muscles contract?c.The release of insulin into the bloodstream when blood sugar increases.d. The movement od salts from cells into the bloodstream.arrow_forwardSuppose you have been doing heavy yardwork on a hot day and sweating profusely.You become very thirsty, so you drink a tallglass of lemonade. Explain how your thirstrelates to the concept of homeostasis. Whichtype of feedback—positive or negative—does this illustrate?arrow_forward
- Which of the following is not true for f negative feedback loops? A. In a negative loop, the response to the signal or stimulus decreases the original signal or stimulus. B. Negative feedback loops maintain homeostasis. C. Negative feedback loops are temporary. D. There are many more instances of negative feedback loops in the human body than positive feedback loops.arrow_forwardIf the oxygen level in the blood decreases, the brain sends a message to the lungs/diaphragm to breathe faster, which increases the levels of oxygen in the blood. This describes a negative or positive feedback loop.arrow_forwardIs this an example of positive or negative feedback? A man is potty trainging his daughter. When she potties on the floor, he tells her "No, no. Potty goes in the potty."arrow_forward
- Which of the following statements is True?a. Ectotherms generate most of their body heatmetabolically.b. Ectotherms include birds and mammals.c. Ectotherms experience variable body temperatures.d. Ectotherms are known as “warm-blooded” animals.arrow_forwardWhich of the following is an endotherm? a. a shark b. a frog c. a monkey d. a snakearrow_forwardThe hormone insulin enhances the transport of glucose (sugar) from the blood into most body cells. Its secretion is controlled by a negative-feedback system between the concentration of glucose in the blood and the insulin-secreting cells. Therefore, which of the following statements is correct? A decrease in blood glucose concentration stimulates insulin secretion, which in turn further towers blood glucose concentration. An increase in blood glucose concentration stimulates insulin secretion, which in turn lowers blood glucose concentration. A decrease in blood glucose concentration stimulates insulin secretion, which in turn increases blood glucose concentration. An increase in blood glucose concentration stimulates insulin secretion, which in turn further increases blood glucose concentration. None of the preceding is correct.arrow_forward
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