Anatomy and Physiology Chapter 5 The Integumentary System | APHY 101 | Ivy Tech Community College | Questions with 100% Verified Answers | Latest Update

Anatomy and Physiology Chapter 5 The Integumentary System | APHY 101 | Ivy
Tech Community College | Questions with 100% Verified Answers | Latest
Update

Question: Functions of skin
Answer:
Protection, Thermoregulation, Cutaneous Sensation, Vitamin D synthesis, Blood Reservoir,
Excretion and Absorption.

Question: Protective elements of skin
Answer:
Keratin, Lipids, Glandular Secretions, Melanin

Question: Thermoregulation
Answer:
Controls internal temp

Question: Vitamin D synthesis
Answer:
You need Vitamin D to absorb calcium

Question: Epidermis
Answer:
Superficial layer of skin. Avascular. 4 different cell types (Keratinocytes, Melanocytes,
Langerhans cells, merkel cells)

Question: Keratinocytes
Answer:
90% of cells. Keratin

Question: Melanocytes
Answer:
8% of cells. Melanin (Pigments and absorb uv radiation.

Question: Langerhans Cells
Answer:
Immune function

, Question: Merkel cells
Answer:
Touch

Question: Layers of skin (Superficial to deep)
Answer:
Epidermis, Dermis

Question: Epidermal Layers (deep to superficial)
Answer:
Stratum Basale, Stratum spinosum, Stratum granulosum, Stratum lucidum, Stratum corneum.

Question: Stratum Basale
Answer:
Keratinocytes, Melanocytes, Langerhans cells and Merkel cells are here. Deepest layer, and
mitosis occurs.

Question: Stratum Spinosum
Answer:
Keratinocytes and Langerhans cells are here. Production of melanocytes here.

Question: Stratum granulosum
Answer:
Lamellar granules, apoptosis occurs here.

Question: Stratum lucidum
Answer:
Present only in thick skin

Question: Stratum corneum
Answer:
Keratin, and continuously shed (Outermost layer)

Question: Dermis
Answer:
Deep layer, Beneath epidermis, Vascular, LAyers: Papillary and reticular