Skin Layers
What is the outermost region of the skin?
The Epidermis
Which gland produces sweat?
Sweat (sudoriferous) gland.
I form the body's outer protective barrier and reduce water loss. What structure am I?
Epidermis.
What process cools the body when sweat changes from liquid to vapor?
Evaporation.
What social media app is known for its "For You Page," often abbreviated FYP?
TikTok.
Which skin region contains blood vessels, sensory receptors, hair follicles, and glands?
The Dermis
Which gland produces sebum?
Sebaceous gland.
I detect touch, pressure, pain, and temperature. What am I?
Sensory receptors.
When body temperature rises, do dermal blood vessels undergo vasodilation or vasoconstriction?
Vasodilation.
In Minecraft, what green creature silently approaches players and explodes?
Creeper.
Which region contains abundant adipose tissue and provides insulation and cushioning?
The Hypodermis
What structure produces and anchors a hair?
Hair follicle.
I secrete an oily substance that lubricates skin and hair. What am I?
Sebaceous gland.
Why is vasoconstriction useful when the body is cold?
It reduces blood flow near the skin surface and decreases heat loss.
What is the name of the cowboy character in Toy Story?
Woody.
Why must epidermal cells receive nutrients by diffusion from deeper tissues?
The epidermis is avascular, so nutrients diffuse from blood vessels in the dermis.
How do dermal blood vessels help regulate body temperature?
They dilate to increase surface heat loss and constrict to reduce heat loss.
I contain adipose tissue that cushions and insulates the body. What region am I?
Hypodermis.
Put these in physiological order: effectors respond; thermoreceptors detect change; temperature returns toward normal; body temperature rises.
Body temperature rises → thermoreceptors detect change → effectors respond → temperature returns toward normal.
In the Mario games, what is the name of Mario's brother who usually wears green?
Luigi.
A deep injury destroys the epidermis and extends through much of the dermis. Name TWO functions likely to be impaired and connect each to a damaged structure.
Examples: protection/water-loss control from epidermal damage; sensation from receptor damage; thermoregulation from vessel or sweat-gland damage.
Explain how a sweat gland, dermal blood vessel, and sensory receptor can work together when body temperature rises.
Thermoreceptors detect the change; vessels dilate and sweat glands increase secretion, increasing heat loss and moving temperature toward normal.
A patient's skin can sense heat normally, but they cannot sweat. Which function is impaired, and what homeostatic consequence can result?
Sweat-gland thermoregulation is impaired; evaporative cooling decreases, increasing overheating risk.
A runner's temperature rises, but sweat glands fail to respond. Predict what happens to thermoregulation and explain why.
Evaporative cooling is reduced, so heat loss is less effective and the runner has greater risk of overheating even though other responses such as vasodilation may continue.
RIDDLE: The more you take, the more you leave behind. What am I?
Footsteps.