Open Question
Multiple ChoiceMore than one choice may apply.Which structure is not associated with a hair?a. Shaftb. Cortexc. Matrixd. Cuticlee. Lunule
5. Integumentary System
Hair
Back5. Integumentary System
Hair
- Multiple ChoiceFollicles that give rise to eyebrows remain active longer than follicles of the scalp.
- Multiple ChoiceKeratin is found in hair and nails.
- Multiple ChoiceHirsutism is a condition that is characterized by __________.
- Multiple ChoiceTerminal hair is located in all of the following areas EXCEPT the __________.
- Open Question
Which of the following is not a function of body hair in humans?
a. Protection from the environment
b. Sensation
c. Protection from mechanical trauma
d. Regulation of blood flow
- Open Question
Fill in the blanks: The portion of the hair that projects from the surface of the skin is the____, and the portion within the dermis is the ___, which is embedded in a(n)_____ . The portion of the hair that contains cells that undergo mitosis during the growth stage of the hair is known as the .
- Open Question
Why don't you bleed when you cut your nails? Why don't you bleed when a hair is pulled?
- Open Question
Manufacturers of shampoos and conditioners often claim their products contain vitamins that are necessary to keep hair shafts healthy. Do hair shafts need vitamins? (Hint: Vitamins are required for cells to carry out certain reactions.) Why or why not? How valid are these claims?
- Open Question
The hair and nails are sometimes called accessory organs. Are these structures technically organs? Why or why not?
- Open QuestionMultiple ChoiceMore than one choice may apply.In investigating the cause of thinning hair, which of the following questions needs to be asked?a. Is the diet deficient in proteins?b. Is the person taking megadoses of vitamin C?c. Has the person been exposed to excessive radiation?d. Has the person recently suffered severe emotional trauma?
- Open QuestionAn arrector pili musclea. is associated with each sweat gland,b. can cause a hair to stand up straight,c. enables each hair to be stretched when wet,d. provides new cells for continued growth of its associated hair.
- Open QuestionThe accessory structures of the integument include the (a) blood vessels, glands, muscles, and nerves, (b) tactile discs, lamellar corpuscles, and tactile corpuscles, (c) hair, skin, and nails, (d) hair follicles, nails, sebaceous glands, and sweat glands.
- Open QuestionThe portion of the hair follicle where cell divisions occur is the (a) shaft, (b) matrix, (c) root hair plexus, (d) cuticle.
- Open QuestionIs a bald man really hairless? Explain.