Skin deep
True or false: birth marks are benign tumors?
True: Birth marks are benign tumors that form on babies before or shortly after birth. No one knows exactly why, but they are usually collections of blood vessels and/or pigment.
True of false: Sweat contains salt?
Sweat is a liquid produced by glands in the skin that's mainly water, but also contains salt and other substances.
About 100 hairs are lost and replaced each day in a normal adult scalp.
What is the world record for nail length?
3 feet
10 feet
42 feet
Diana Armstrong from Minnesota holds the Guinness World Record for the longest fingernails on a pair of hands, measuring 42 ft 10.4 in (1,306.58 cm). This is longer than a standard yellow school bus.
A nocioceptor is:
What is a "beauty mark"?
A beauty mark is just a freckle or mole on the face
On average, how many sweat glands are in 1 square 1/2 inch of skin?
On average, 1 square ½ inch of skin contains roughly 100 sweat glands
On average, how much does a single hair grow each day?
1 mm
2 mm
3 mm
Hair grows about 1 mm every 3 days.
What is the primary protection of finger and toenails?
The primary function of toenails and fingernails is to protect the tips of the toes and fingers.
According to most research, the area of the body with the fewest pain skin receptors is the lower back, buttocks, and thighs;
What is the main difference between a mole and freckle?
A freckle is a collection of melanin and is flat. A mole is the same thing except the skin is raised.
How many total sweat glands does the average person have?
Your skin contains about 3 million sweat glands.
Male pattern baldness is inherited from which set of chromosomes?
Female- XX
What type of protein are nails primarily composed of?
Human hair and nails are made of keratin, and so are bull horns, reptile scales, bird feathers, and porcupine quills.
True or false: Pain receptors are located in the dermis and epidermis?
Only receptors for pain are found in both the epidermis and the dermis.
What is the number one cause of skin cancer?
Sun exposure is the number one cause of skin cancer. The worst skin cancer is melanoma in which melanocytes become cancerous.
How much does the average person sweat a day?
-4 ounces
- 16 ounces
-30 ounces
On average, a person loses about 900 mL (about 30 ounces) of sweat each day.
About how long is the growth cycle for arm and leg hair?
Follicles on your arms and legs will spend only about 2 months at a time in the growth phase, therefore hair grows shorter in these areas.
onychomycosis is also known as:
Toe nail fungus
Not all parts of the body are equally sensitive to touch. The greatest densities of touch receptors, for example, are found on your fingers, toes, and lips.
What does the word "integere" mean?
The word “integumentary” comes from the Latin verb “integere” which means, “to cover”.
True or false: fit people sweat sooner during exercise than unfit people?
True: The fitter you are, the sooner you may start to sweat during exercise.
Which hair color is considered a genetic mutation?
Red hair is a genetic mutation that requires both parents to be carriers of the mutated MC1R gene
The risk of developing toenail fungus increases with age, affecting 50% of people over 70.
Which of the following do Nocioceptors respond to?
1) intense mechanical stimulation such as pinching, cutting or stretching
2) thermal pain
3) chemical pain