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Concept explainers
To explain: The policies in the states of USA to protect high school athletes from heat illness.
Concept introduction: When the body temperature rises above 97°F (36.1°C) to 99°F (37.2°C) range, the control center for thermoregulation in the brain inducts signals. Counter current heat exchange occurs. The blood vessels near the skin will dilate and heat is released to the exterior. When the body temperature drops below a certain range, the control center for thermoregulation in the brain inducts signals. This results in body shivering and counter current heat exchange occurs. The blood vessels near the skin constrict resulting in the conservation of heat. The above processes are collectively called as counter current heat exchange. Heat illness is a condition where the brain fails to thermo-regulate over the exposure to heat.
To explain: The reason why heat illness is much more common in football players than athletes.
Concept introduction: When the body temperature rises above 97°F (36.1°C) to 99°F (37.2°C) range, the control center for thermoregulation in the brain inducts signals. Counter current heat exchange occurs. The blood vessels near the skin will dilate and heat is released to the exterior. When the body temperature drops below a certain range, the control center for thermoregulation in the brain inducts signals. This results in body shivering and counter current heat exchange occurs. The blood vessels near the skin constrict resulting in the conservation of heat. The above processes are collectively called as counter current heat exchange. Heat illness is a condition where the brain fails to thermo-regulate over the exposure to heat.
To make: Pamphlet that could be given to high school football players educating them about the dangers of heat illness and ways to prevent it.
Concept introduction: When the body temperature rises above 97°F (36.1°C) to 99°F (37.2°C) range, the control center for thermoregulation in the brain inducts signals. Counter current heat exchange occurs. The blood vessels near the skin will dilate and heat is released to the exterior. When the body temperature drops below a certain range, the control center for thermoregulation in the brain inducts signals. This results in body shivering and counter current heat exchange occurs. The blood vessels near the skin constrict resulting in the conservation of heat. The above processes are collectively called as counter current heat exchange. Heat illness is a condition where the brain fails to thermo-regulate over the exposure to heat.
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Chapter 21 Solutions
Campbell Essential Biology with Physiology (6th Edition)
- Identify the indicated tissue? (stem x.s.) parenchyma collenchyma sclerenchyma ○ xylem ○ phloem none of thesearrow_forwardWhere did this structure originate from? (Salix branch root) epidermis cortex endodermis pericycle vascular cylinderarrow_forwardIdentify the indicated tissue. (Tilia stem x.s.) parenchyma collenchyma sclerenchyma xylem phloem none of thesearrow_forward
- Identify the indicated structure. (Cucurbita stem l.s.) pit lenticel stomate tendril none of thesearrow_forwardIdentify the specific cell? (Zebrina leaf peel) vessel element sieve element companion cell tracheid guard cell subsidiary cell none of thesearrow_forwardWhat type of cells flank the opening on either side? (leaf x.s.) vessel elements sieve elements companion cells tracheids guard cells none of thesearrow_forward
- What specific cell is indicated. (Cucurbita stem I.s.) vessel element sieve element O companion cell tracheid guard cell none of thesearrow_forwardWhat specific cell is indicated? (Aristolochia stem x.s.) vessel element sieve element ○ companion cell O O O O O tracheid O guard cell none of thesearrow_forwardIdentify the tissue. parenchyma collenchyma sclerenchyma ○ xylem O phloem O none of thesearrow_forward
- Please answer q3arrow_forwardRespond to the following in a minimum of 175 words: How might CRISPR-Cas 9 be used in research or, eventually, therapeutically in patients? What are some potential ethical issues associated with using this technology? Do the advantages of using this technology outweigh the disadvantages (or vice versa)? Explain your position.arrow_forwardYou are studying the effect of directional selection on body height in three populations (graphs a, b, and c below). (a) What is the selection differential? Show your calculation. (2 pts) (b) Which population has the highest narrow sense heritability for height? Explain your answer. (2 pts) (c) If you examined the offspring in the next generation in each population, which population would have the highest mean height? Why? (2 pts) (a) Midoffspring height (average height of offspring) Short Short Short Short (c) Short (b) Short Tall Short Tall Short Short Tall Midparent height (average height of Mean of population = 65 inches Mean of breading parents = 70 inches Mean of population = 65 inches Mean of breading parents = 70 inches Mean of population = 65 inches Mean of breading parents = 70 inchesarrow_forward
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