Questions in Text (Integumentary)
Critical thinking 3,6,8

As a rule a superficial partial-thickness burn is more painful than one involving deeper tissues. How would you explain the observations?one that burns deeper would destroy nerves so you would not feel the pain, not noticing how bad you are burnt.

How would you explain to an athlete the importance of keeping the body hydrated when exercising in warm weather?I would tell them that the body needs water to operate properly and in extreme heat situations it is much easier to dehydrate if you don’t drink plenty of water.

How is skin peeling after a severe sunburn protective. How might a fever be protective.Skin peeling over a sunburn might protect it from infection, and a fever might be protective because it indicates that there is an infection, and that things in your immune system are working to fight a problem.

Review Exercises 4,5,6,8,13,15,16,22,25,27,28,29
List six functions of skinvital in maintaining homeostasis,protective coveringretards water loss by diffusionhelpos regulate body temperaturehouses sensory receptors contains immune system cellssynthesizes various chemicalsexretes small quantities of waste.

List the two layers of the epidermisthe two layers are the dermis and hypodermis.Describe the function of melanocytes:They produce melanin which provides skin color.

Distinguish between a hair and a hair follicle. Hair develops from hair follicles, which are at the base of a tube-like depression.

Describe how nails are formed. Nails are formed by epithelium that divide.

Explain the function of Sebaceous glands. They produce fatty material which mixes with cerbum and makes skin soft.

Describe the body’s response to decreasing body temperature. When the body system drops below normal the nervous system signals dermal blood vessels to constrict and sweat glands to remain inactive. This conserves body heat. If temperature continues to drop nervous system signals muscles to contract involuntarily which generates body heat.

Describe three physiological factors that affect skin color. Blood in dermal vessels add color to the skin.could be well oxygenated producing a pinkish effect.or in a low concentration of blood oxygen it would appear blue.The state of the blood vessels also affect skin color.Also carotene, found in yellow vegetables, might change your skin a yellowish color if you eat too much of it.

Distinguish among first, second, and third degree burns. A first degree burn only burns the epidermis. A second degree burn is one that burns some epidermis as well as some underlying dermisa third degree burn destroys the epidermis, dermis and the accessory organs of the skin.

List three effects of aging skin. The dermis becomes wrinkled. Slow melanin production causes hair to become gray or white.Ability to control temperature falters as number of skin falls. Also ability to shiver declines.