Match the following organ systems to its function. 28. pH homeostasis Skeletal 29. Muscular disease, absorbs lipids 30. Nervous temperature regulation 31. Endocrine produces motor output Reproductive 32. gametes 33. I Integumentary Cardiovascular 34. wastes, oxygen to cells Lymphatic 35. processes food, absorbs nutrient A. Excretes metabolic wastes, B. Defends against infectious C. Protects body, involved in D. Processes sensory input, E. Produces and transports F. Produces hormones G. Transports nutrients, H. Ingests, digests, and

Match the following organ systems to its function. 28. pH homeostasis Skeletal 29. Muscular disease, absorbs lipids 30. Nervous temperature regulation 31. Endocrine produces motor output Reproductive 32. gametes 33. I Integumentary Cardiovascular 34. wastes, oxygen to cells Lymphatic 35. processes food, absorbs nutrient A. Excretes metabolic wastes, B. Defends against infectious C. Protects body, involved in D. Processes sensory input, E. Produces and transports F. Produces hormones G. Transports nutrients, H. Ingests, digests, and

Anatomy & Physiology

1st Edition

ISBN:9781938168130

Author:Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble

Publisher:Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble

Chapter15: The Autonomic Nervous System

Section: Chapter Questions

Problem 1ILQ: Watch this video (http://openstaxcollege.org/l/fightflight) to learn more about adrenaline and the...

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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.
;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)
16. Identify each event found below as a homeostatic response or not a homeostaticresponse. Remember to give the rational for each response. a) A marathon runner is sweating as she completes 10 km of a 20 km race b) Children at a party enjoy eating the chocolate cookies and finish everything on theplate.
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.
Watch this video (http://openstaxcollege.org/l/fightflight) to learn more about adrenaline and the fightor-flight response. When someone is said to have a rush of adrenaline, the image of bungee jumpers or skydivers usually comes to mind. But adrenaline, also known as epinephrine, is an important chemical in coordinating the bodys fight-or-flight response. In this video, you look inside the physiology of the fight-or-flight response, as envisioned for a firefighter. His bodys reaction is the result of the sympathetic division of the autonomic nervous system causing system-wide changes as it prepares for extreme responses. What two changes does adrenaline bring about to help the skeletal muscle response?
Figure 33.21 State whether each of the following processes are regulated by a positive feedback loop or a negative feedback loop. A person feels satiated after eating a large meal. The blood has plenty of red blood cells. As a result, erythropoietin, a hormone that stimulates the production of new red blood cells, is no longer released from the kidney.
The diagram in Figure 5 shows the difference between negative feedback and positive feedback. (i)Explain why negative feedback is important in homeostasis. (ii)Explain how negative feedback enables the carotid and aortic bodies and the medulla to maintain a constant blood carbon dioxide level. (iii)It is said that the initiation of an Action Potential is an example of positive feedback. With reference to the process involved, state why you think this statement is accurate?
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?
You have to identify the following:1. The negative feedback condition/mechanism2. The four components of a negative feedbackloop:A. stimulusB. sensorC. control centerD. effector3. Explain what would happen to eachcomponent if a secretion became too great.
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.…
1. What does not occur when calcium levels fall below the normal range? A. Parathyroid hormone is released. B. Calcium uptake in bone is increased. C. Calcium reabsorption in the kidney is increased? D. Calcium uptake in the intestine increased. 2.Which term refers to a neural circuit that travels through the spinal cord but does not require the coordination of the brain A. reflex circuit B. reflex arc C. afferent circuit D. efferent circuit 3. In a lab a neuron is stimulated by various electrical charges with the following results: 10mV no action potential, 20 mV action potential, 30 mV action potential, 40 mV action potential. What is the threshold potential? A. 10 mV B. 20 mV C. 30 mV D. 40 mV
When calcium levels are too high or too low, whichbody system is primarily affected?a. skeletal systemb. endocrine systemc. digestive systemd. nervous system