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Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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Question
which of the following statements are true about homeostasis? Select all that apply.
a. The selective permeability of the cell membrane allows for thermoregulation.
b. Homeostasis is an organism‘s way of maintaining constant and balanced internal processes.
c. Ectotherms rely on environmental heat to maintain homeostasis.
d. Homeostasis works by a system of positive feedback.
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- A patient is experiencing increased blood pressure. How would this effect the blood entering the glomerulus and on urination? an increase in filtration and increase in urine output a decrease in filtration and decrease in urine output an increase in filtration and decrease in urine output a decrease in filtration and increase in urine outputarrow_forwardsend a small electrical current through the One way to characterise biological tissue is tissue and measure the opposition to flow of that current through the tissue. In humans, the resistivity of fat is considerably greater than for muscle, which in turn is considerably greater than for blood and other body fluids. This can be used to analyse body composition, in particular, to estimate body fat percentage. (a) Using a simple model of fat versus non-fat tissue, draw a circuit diagram to represent the possible flows of current through the tissue (b) Why would the analysis of body composition need to take into account the height and weight of the person? (c) How could the level of hydration or electrolyte abnormalities in the person affect the results of the analysis? DII E3 Prt Scn F3 Home 9 ES F6 F7 % &arrow_forwardFunctions of human body cells include a. movement. b. covering. c. storage. d. communication. e. All of the choices are correct.arrow_forward
- If daytime body temperature of some ectotherms were measured, the values would be fairly constant. Provide an explanation for such observations, giving some possible mechanisms that might be involvedarrow_forwardWhen you get cut, your skin cells release hormones that signal platelets to come and stop the bleeding. Platelets then release more hormones that signal even more platelets to help stop bleeding. The hormone signals continue until the cut is closed. Which type of feedback mechanism is exhibited in the given situation? Group of answer choices positive feedback negative feedback behavioral feedback structural feedbackarrow_forwardA scientist observes an animal that maintains a stable internal body temperature regardless of the external environmental conditions. Which term best describes this thermoregulatory strategy? Group of answer choices Heterothermic Poikilothermic Ectothermic Homeothermicarrow_forward
- One way to characterise biological tissue is to send a small electrical current through the tissue and measure the opposition to flow of that current through the tissue. In humans, the resistivity of fat is considerably greater than for muscle, which in turn is considerably greater than for blood and other body fluids. This can be used to analyse body composition, in particular, to estimate body fat percentage. (a) Using a simple model of fat versus non-fat tissue, draw a circuit diagram to represent the possible flows of current through the tissue. (b) Why would the analysis of body composition need to take into account the height and weight of the person? (c) How could the level of hydration or electrolyte abnormalities in the person affect the results of the analysis? DII Prt Scn a Home 9 F4 ES F6 F7 2$ & 4 6 7 8. 9arrow_forwardFollowing is a list of tissues that have specialized functions and demonstrate corresponding specialization of subcellular structure. Match the tissue with the letter of the cell structures and organelles listed to the right that would be abundant in these cells. Tissues -Enzyme (protein)-secreting cells of the pancreas -Insect flight muscles -Cells lining the respiatory passages -White blood cells that engulf and destroy invading bacteria -Leaf cells of cacti Cell Structures and Organelles: a. plasma membrane b. mitochondria c. Golgi apparatus d. chloroplast e. endoplasmic reticulum f. cilia and flagella g. vacuole h. ribosome i. lysosomearrow_forward1. What is homeostasis? 2. Identify the components of a negative feedback mechanism. 3. When does positive feedback mechanism occur in the body? 6. Which of the following internal control systems is responsible in gathering information about the conditions inside and outside of the body? A. communicating system C. sensor B. control center D. thalamus 7. When there is an increase in the sugar level, negative feedback occurs in our body. What organ is responsible for releasing insulin to lower the sugar level? A. brain B. heart C. kidney D. pancreas 8. Which is the following is the best description of homeostasis? A. Maintenance of body function. B. Maintenance of body functions at the optimum level at all times. C. Keeping the body in balance D. Multiple systems working cooperatively to maintain body function within normal limits. 9. In which direction does an impulse travel along a neuron? A. from axon to axon C. from dendrite to axon B. from axon to dendrite D.…arrow_forward
- Research the behaviours of a specific ectothermic animal. How do specific behaviours allow for the animal to control its body temperature in cool and hot conditions? How do specific parts of the animal’s anatomy help with thermoregulation? Use a feedback diagram to show how this animal uses thermoregulation in one of these conditions: ectotherm in cool conditions ectotherm in hot conditions Be sure to use ⊕ and ⊝ symbols in the feedback diagram to add important details.arrow_forwardA collection of tightly-packed cells that lack a basement membrane describes: Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a epithelial tissue. connective tissue. C muscle tissue. d nervous tissuearrow_forwardFrom the list of strategies for dealing with harsh cold environments, choose those that an ectotherm would employ. See image attatched.arrow_forward
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