BIOLOGY:CONCEPTS &...(LL) W/ACCESS +LM
4th Edition
ISBN: 9781260684506
Author: Hoefnagels
Publisher: MCG
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Chapter 25, Problem 7MCQ
Summary Introduction
Introduction:
Most of the physiological functions that maintain homeostasis use negative feedback. The negative feedback is a change in a condition that triggers action which in turn, reverses the change. In negative feedback, the sensors detect a change in the internal environment and activate effectors that counteract the change. The ultimate effect is to restore the parameter to its normal range.
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Chapter 25 Solutions
BIOLOGY:CONCEPTS &...(LL) W/ACCESS +LM
Ch. 25.1 - What is the difference between anatomy an d...Ch. 25.1 - What is the relationship among cells, tissues,...Ch. 25.1 - Trace the bodys early development from one...Ch. 25.2 - If you were given a microscope slide with a slice...Ch. 25.2 - Suppose you determine that a tissue sample...Ch. 25.3 - Which organ systems contribute to each of the five...Ch. 25.3 - Prob. 2MCCh. 25.4 - Use figure 25.9 to explain which materials enter...Ch. 25.4 - Prob. 2MCCh. 25.4 - Prob. 3MC
Ch. 25.5 - How does the integumentary system help the body...Ch. 25.5 - Prob. 2MCCh. 25.6 - Prob. 1MCCh. 25.6 - Suggest a specific prediction related to folic...Ch. 25 - Which of the following represents the correct...Ch. 25 - According to the anatomical terms in figure 25.3,...Ch. 25 - Epithelial tissue consisting of multiple layers of...Ch. 25 - Which of the following features do all types of...Ch. 25 - Prob. 5MCQCh. 25 - Ovaries produce gametes and hormones; these organs...Ch. 25 - Prob. 7MCQCh. 25 - The inner layer of skin is __________, whereas the...Ch. 25 - How does the integumentary system influence...Ch. 25 - Distinguish between the following. a. Organs and...Ch. 25 - Use the Internet to research cosmetic surgery....Ch. 25 - Prob. 3WIOCh. 25 - Explain the similarities and differences among the...Ch. 25 - Explain how you use your organ systems (except...Ch. 25 - Describe how the circulatory system connects the...Ch. 25 - Prob. 7WIOCh. 25 - Prob. 8WIOCh. 25 - Describe at least one interaction between skin and...Ch. 25 - 1. What features distinguish the four types of...Ch. 25 - Prob. 2PITCh. 25 - Review the Survey the Landscape figure in the...
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- When faced with a sudden drop in environmental temperature, an endothermic animal will _______. a. experience a drop in its body temperature b. wait to see if it goes lower c. increase muscle activity to generate heat d. add fur or fat to increase insulationarrow_forwardWhich 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_forwardSodium and potassium play a key role in the generation of____? A. hormones B. New tissue C. Nerve impulses D. Ionsarrow_forward
- In negative feedback,a. a change causes responses that counteract the change.b. a response to a change damages the body.c. a change produces a response that enhances the change.d. a response to a change permanently alters the body.arrow_forwardWhich is an example of negative feedback? a. lowering of blood glucose after a meal b. blood clotting after an injury c. lactation during nursing d. uterine contractions during laborarrow_forwardWhen you step outside in the cold, your body temperature decreases; which causes shivering or contractions of your muscles. In this example, the shivering or contracting of the muscles, is what part of the feedback loop?arrow_forward
- Explain the components of a feedback loop and discuss what would happen if secretion of a body chemical controlled by a negative feedback system became too great.arrow_forwardWhich of these homeostatic mechanisms in the body are examplesof positive feedback, and which are examples of negative feedback?Why?a. The adrenal glands produce epinephrine in response to a hormone produced by the pituitary gland in times of stress; the pituitary gland senses the epinephrine in the blood and stopsproducing the hormone.b. As the bladder fills with urine, pressure sensors send messagesto the brain with increasing frequency, signaling that the bladdermust be emptied. The more the bladder fills, the more messagesare sent.c. When you drink an excess of water, specialized cells in yourbrain, as well as stretch receptors in your heart, detect theincrease in blood volume. Both signals are transmitted to thekidneys, which increase the production of urine.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_forward
- A scientist hypothesizes that the pancreas’s hormone production is controlled by neural stimuli. Which observation would support this hypothesis? a. Insulin is produced in response to sudden stress without a rise in blood glucose. b. Insulin is produced in response to a rise in glucagon levels. c. Beta cells express epinephrine receptors. d. Insulin is produced in response to a rise in blood glucose in the brain.arrow_forwardAfter a long, hot run together, your friend tells you that you should dunk your head into a cooler of water to lower your body temperature more rapidly, rather than sitting and waiting to cool down. What do you think? Form a hypothesis, about how the ice-cold water might affect the rate at which your body temperature returns to normal. How could you test your hypothesis? Explain your answer.arrow_forwardWhich is an example of negative feedback? lowering of blood glucose after a meal blood clotting after an injury lactation during nursing uterine contractions during labor nausea leading to vomitingarrow_forward
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