BIO 446L Exam 5 Pt 4 Skin Practice Questions and Correct Answers
5 views 0 purchase
Course
BIO 446
Institution
BIO 446
Functions of skin -barrier -maintain bodily fluids -sensory -synthesizes vitamin D -modulates body temperature -sexual signaling
Skin barrier against -microorganisms -harmful substances -light
Layers of the skin -epidermis -dermis
Epidermis -thin -devoid of blood vessels -four layers-play differ...
BIO 446L Exam 5 Pt 4 Skin Practice
Questions and Correct Answers
Functions of skin ✅-barrier
-maintain bodily fluids
-sensory
-synthesizes vitamin D
-modulates body temperature
-sexual signaling
Skin barrier against ✅-microorganisms
-harmful substances
-light
Layers of the skin ✅-epidermis
-dermis
Epidermis ✅-thin
-devoid of blood vessels
-four layers-play different roles at different anatomic sites
-cells:
1. Keratinocytes
2. Melanocytes
3. Dendritic cells
4. Tactile cells
Keratinocytes ✅-in epidermis
-produce stratum corneum
-produce a second line of biochemical defense:
1. Cytokines
2. Prostaglandins
3. Antioxidants
4. Xenobiotic metabolizing enzyme systems (eliminate toxic compounds)
Melanocytes ✅-in epidermis and hair follicles
-synthesize and transfer melanin (within melanosomes) to keratinocytes
-melanin (absortbs UVL, protects DNA in the basal cells from damage)
Dendritic cells ✅-in epidermis
-immune surveillance
-present antigen to T-lymphocytes of the afferent immune system
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller twishfrancis. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $8.99. You're not tied to anything after your purchase.
