Terms
The sternum (chest bone) is ___ to the vertebrae (back bone).
Anterior
What's the difference between thin and thick skin?
Thin: 4 epidermal layers, most of body
Thick: 5 layers, stratum lucidum added - in palms and soles
Give an example of a negative feedback loop. Why is it important.
Resets our body to homeostasis. many examples.
T or F: The hypodermis is typically the layer people are concerned about when trying to lose weight.
True
You drank milk this morning because you need calcium for small bones. Do you think this is sufficient or are there any other factors involved with this?
It helps, but no. Without Vitamin D, we cannot absorb calcium. Getting sunlight will help
The dermis is ____ to the hypodermis
superficial
Point out the lunula on your nail. Why is it different?
Lunula is the white moon shaped structure. An extra epidermal layer is there.
Explain what BMI is.
Reliable rating for most people.
________________ sweat glands are usually associated with hair follicles in densely hairy areas, such as armpits and genitals.
Apocrine
Describe any differences in sensation between our fingers and our back.
Our fingertips are more sensitive to touch because we use them all day and need to grasp objects.
The stratum basale is _____ to the stratum granulosum
deep
Is there a difference in vascularity between the dermis and epidermis? If yes, describe that. If no, why do you think that may be?
Yes, dermis has a rich blood supply. Epidermis does not.
Give an example of catabolism/anabolism.
Workout: catabolism breaks down
Eating after / 48 hour recovery: anabolism builds up
Goosebumps are caused by the
arrector pilli muscle
What is Ricketts and what causes it and why does that make sense?
Painful condition where bones are misshapen - vitamin D deficiency means you cannot absorb calcium.
A medication is injected into the hypodermis of the thigh. As the needle is withdrawn back out of the body, describe the order of layers it passes through and explain the position of each layer (dermis, epidermis, bone, hypodermis, muscle) relative to one another. Finally, state whether the needle is moving in a superficial or deep direction during withdrawal
In order from deep to superficial: bone, muscle, hypodermis, dermis, epidermis.
Needle on the withdrawal would have to move superficially.
Name the 3 phases of hair growth and describe them
Anagen: rapid growth, 2-5 years
Catogen: decreased growth, 2-4 months
Telogen:final stage, no growth, 2-4 weeks
Rank the 3 fats from healthiest to most detrimental and give examples of each.
Healthy: unsaturated
Unhealthy: saturated
Terrible: trans fat
What is the importance of cilia?
to move substances (mucus) out of our lungs / airway
Describe what happens to your blood flow when it is very cold outside, using terms from class.
Blood vessels to our fingers and toes vasoconstrict, liming blood flow to these areas. This is a survival mechanism to preserve our vital organs. Blood flow to our core increases.
A nail enters a person’s right foot and lodges just beneath the skin on the bottom of the big toe. Describe the nail’s position relative to the following structures: the skin, the ankle joint, and the little toe.
Name the five epidermal layers in order from superficial to deep.
stratum corneum
" " lucidum
" " graulosum
" " spinosum
" " basale
Pick a food. I'll look it up and display its nutrition label on the board and quiz you on serving size, calories, added sugar, fats.
Depends what group picks
Come to the board. Draw stratified squamous cells. Explain where they are and why.
squishy, more than one layer
On the skin for abrasion and protection
You are walking on an ice pond in the winter when all of a sudden, the ice breaks and your foot goes in the water. You sense this is very cold and need to pull your foot out of the water. Describe the steps from sensory to motor pathway to accomplish this.
cold --> sensory nerve --> spinal cord -> brain --> spinal cord --> motor nerve --> muscles to move foot out