What are the main differences between sebum and sweat?
What will be an ideal response?
Sebum is secreted by the sebaceous glands. It provides lubrication on the surface of the skin and inhibits the growth of bacteria. Sweat is a watery fluid secreted by merocrine sweat glands that functions in thermoregulation.
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Shafts of hair are composed of
A. dead dermal cells. B. dead epidermal cells. C. living epidermal cells. D. living dermal cells.
The tough layer of waterproof material that makes up the outermost part of the epidermis
is the stratum lucidum. Indicate whether the statement is true or false
What is the main role of the cutaneous skeletal muscles of the face?
a. Communication through facial expressions b. Mastication c. Respiration and the excretion of waste products
Which of these is used clinically to impede or prevent blood clotting?
A) thrombin B) heparin C) fibrin D) tissue factor E) prothrombin