Why are hormones critical to the proper functioning of the body?
The body's proper functioning depends upon two well-developed communication systems that coordinate physiologic processes—the nervous and endocrine systems. When conditions change, the nervous system receives and transmits vital information via electrical impulses between nerve cells, whereas the endocrine system communicates via hormones or chemical messengers in the blood. Hormones are released from glands or cells in response to various stimuli. Hormones exert their effects by binding to receptors on specific tissues, which then initiate an appropriate response to the initial stimulus. Together, the nervous and endocrine systems continuously monitor our internal environment, responding to change and restoring balance. These mechanisms allow us to adapt in an ever-changing environment.
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Edgar does not like drinking milk but likes cheese, yogurt, and ice cream. What can you tell about Edgar's calcium intake?
A. Edgar is getting adequate calcium from his diet. Cheese, yogurt, and ice cream are good sources of calcium. B. Unless Edgar adds dark green leafy vegetables to his diet, he will not get adequate calcium. C. Edgar is probably consuming excessive amounts of calcium that can lead to toxicity. Calcium is concentrated when cheese, yogurt, and ice cream are made from milk. D. Edgar is probably not getting enough calcium. Calcium is removed from milk when cheese, yogurt, and ice cream are made.
Middle-aged people may tire more easily than they did when they were younger. Therefore, they may get less sleep than when they were younger. ___________________
Indicate whether the statement is true or false
With increasing obesity, age, and blood pressure levels comes an increasing probability that a person will become salt sensitive
a. True b. False Indicate whether the statement is true or false
Bernice is a vegan. Which of the following foods does she eat?
A. Legumes B. Cheese C. Fat-free milk D. Eggs