You couldnt survive without your skin. It has many important functions. The main function of the skin is controlling what enters and leaves the body. It prevents the loss of too much water from the body. It also prevents bacteria and other microorganisms from entering the body. The skin helps maintain a constant body temperature. It keeps the body cool in two ways. Sweat from sweat glands in the skin evaporates to cool the body. Blood vessels in the skin dilate, or widen. This action increases blood flow to the body surface. This allows more heat to reach the surface. The heat is then able to radiate off the body. The opposite happens to retain body heat. Blood vessels in the skin constrict, or narrow. This decreases blood flow to the body surface. This reduces the amount of heat that reaches the surface. When this happens, less heat can be lost to the air.

Whose loss from the body is prevented by the skin?

Callimaco is taken by the beauty of Lucrezia , but she is the loyal wife of Nicia , a rich and foolish lawyer . Callimaco hires the service of a shady ' fixer ' named Ligurio to aid in his quest to sleep with her . Lgurio informs Callimaco that Nicia and Lucrezia are anxious to have a child . With the fixer's help , . Callimaco masquerades as a doctor and convinces Nicia that the best way for Lucrezia to conceive a child is by her taking a potion made from the Mandrake Root . He lies and warns Nicia that the first man to sleep with Lucrezia after she has taken the potion will die within eight days . Together they devise a plan to kidnap a stranger to sleep with Lucrezia and draw out the poison . Callimaco then disguises himself and arranges to be the one who is kidnapped . Lucrezia is an honorable woman and does not at first agree to meet with the stranger . Nicia gets both Lucrezia's mother , a woman of ill repute , and her confessor Brother Timoteo , a priest of low morals , to aid in convincing Lucrezia of the necessity of the plan . After finally sleeping with Lucrezia , Callimaco confesses everything . Lucrezia gives thought to the duplicity of her husband , her mother , and her confessor , and decides that she now wants Callimaco as a lover forever . Callimaco gets what he had desired and everyone else continues to believe that each had outwitted the others .

Who finally slept with Lucrezia?

When you get sick, your body springs to action. Your body starts to fight the illness. Thats why you want to eat right and get plenty of sleep. You need a strong immune system to fight off illness. Plants dont have an immune system. That does not mean they do not get sick. Plants are affected by disease just like us. Typically, their first line of defense is the death of part of the plant. This prevents the infection from spreading. Many plants also produce special chemicals to fight disease. For example, willow trees produce a chemical to kill the bacteria. The same compound is used in many acne products. You can see a picture of a willow tree in Figure Plants may be smarter than we think. No, they cannot talk to each other. They may be able to send messages, though.
Can plants fight infection without releasing special chemicals?