Match each body system with another system that it must interact with to carry out the function described. Body System Example Interactions Excretory - excretes sweat to help regulate body temperature Circulatory System Immune - produces white blood cells Digestive System Circulatory - transports hormones to target tissues Endocrine System Muscular - stimulates to initiate muscle movement Excretory System Respiratory - allows for exchange of oyxgen and carbon dioxide Integumentary System Integumentary -acts as a barrier to protect body from pathogens Lymphatic/ Immune

Match each body system with another system that it must interact with to carry out the function described. Body System Example Interactions Excretory - excretes sweat to help regulate body temperature Circulatory System Immune - produces white blood cells Digestive System Circulatory - transports hormones to target tissues Endocrine System Muscular - stimulates to initiate muscle movement Excretory System Respiratory - allows for exchange of oyxgen and carbon dioxide Integumentary System Integumentary -acts as a barrier to protect body from pathogens Lymphatic/ Immune

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter15: Fluid And Acid-base Balance

Section15.1: Balance Concept

Problem 1CYU

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Suppose at the end of a hard runon a hot day you find that there are no drinksleft in the cooler. If, out of desperation, youdunk your head into the cooler, how might theice-cold water affect the rate at which your bodytemperature returns to normal?
Which 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.
;Make a Venn Diagram using the provided information below NEGATIVE FEEDBACK MECHANISM • Most control mechanisms in the human body are negativefeedback mechanisms• A negative feedback mechanism DECREASES theintensity of the stimulus and eliminates it• When a variable is above or below set point, integratortriggers a move in the OPPOSITE DIRECTION to reachthe set valueEx. Body temperature, blood pressure, pH and CO2 levels,blood glucose levelsPOSITIVE FEEDBACK MECHANISM• A positive feedback mechanism ENHANCES the originalstimulus to ACCELERATE activity• Integrator triggers a move in the SAME DIRECTIONtriggering an “explosive” response• Positive feedback mechanisms are less commonEx. Blood clotting, childbirth (oxytocin)
What effect would swimming in cool water have on body temperatureregulation? What would happen if a negative-feedback mechanismdid not return the value of a variable, such as body temperature, to itsnormal range?
Describe a general physiological control system, includingthe role of negative feedback.
Regulation of physiological variables occurs primarily through mechanisms. a. negative feedback b. positive feedback c. urine formation d. feedforward e. myogenic
Watch this video (http://openstaxcollege.org/l/dynamicfluid) to see an explanation of the dynamics offluid in the body’s compartments. What happens in tissueswhen capillary blood pressure is less than osmoticpressure?
In a negative feedback mechanism,a. the output cancels the input.b. there is a fluctuation above and below the average.c. there is self-regulation.d. a regulatory center communicates with other body parts.e. All of these are correct.
Discuss in detail the effect of parasympathetic and symapathetic stimulation on the repiratory, excretory and cardiovascular systems.
1. What is homeostasis? a. Fluctuation between high and low valuesb. Ingestion of enough food to satisfy hungerc. Tendency of the body to maintain a stable internal environmentd. Ability to remain within certain limited ranges 2. How does negative feedback lead to homeostasis? a. It shuts off the original stimulus, or reduces its intensity.b. It amplifies the effect of stimulusc. Increasing the effect of an output 3. Which statement about positive feedback is false? a. Positive feedback is observed more readily than negative feedback.b. Positive feedback reaches a limit at which it terminates quickly.c. Positive feedback amplifies the response.d. Positive feedback is exemplified by sexual behavior. 4. As fruit ripens it emits a chemical called ethylene, which attracts fruit flies. The flies damage the fruit, causing more odor to be released. As this happens, more flies are attracted to the fruit. Of what response is this an example?a. Positive feedbackb. Negative feedbackc.…
Which of the following is incorrect?a. Equilibrium requires a constant input of energy.b. Positive feedback is less common in nature than negative feedback.c. Homeostasis does not imply that a given variable is unchanging.d. Fever is an example of resetting a set point.e. Efferent pathways carry information away from the integrating center of a reflex arc.
Give an example of a positive-feedback mechanism thatmay be harmful to the body and an example of one that isnot harmful.