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Quiz_________________?
- Karatinocytes
- Melanocytes
- Tactile (Merkel) cells
- Dendritic (Langerhans) cells -
ANSWER✅
What are the 4 main cell types in the epidermis?
Quiz_________________?
- lubricates and waterproofs hair and skin
- weakens or kills bacteria on skin surface -
ANSWER✅
What is the function of sebum
Quiz_________________?
- Stratum basale
1
, - Stratum spinosum
- Stratum granulosum
- Stratum lucidum
- Stratum corneum -
ANSWER✅
What are the layers of the epidermis (list from bottom up)?
Quiz_________________?
-Bleeding/inflammation
- Scab formation
- Formation of granulation tissue (soft mass of perfused tissue)
- Regeneration/fibrosis -
ANSWER✅
List the events of tissue repair in order
Quiz_________________?
-eumelanin- brownish black
-pheomelanin- reddish yellow -
ANSWER✅
What are 2 types of pigments and what is their color?
Quiz_________________?
-Glands release sweat for evaporative cooling
- Vasoconstriction
- Vasodilation -
2
, ANSWER✅
Name 3 ways the integumentary system thermoregulates?
Quiz_________________?
-Resistance to trauma and infection
-Prevents loss or gain of water
-Vitamin D synthesis
-Sensory receptors for heat, cold, touch, texture, pressure, vibration, and tissue injury
-Thermoregulation -
ANSWER✅
Functions of the Integumentary System
Quiz_________________?
-Skin has low pH to reduce bacteria and fungi
-Cells are packed closely together with tough protein called keratin -
ANSWER✅
How does skin resist trauma and infection?
Quiz_________________?
~65% inorganic, ~35% organic -
ANSWER✅
What are the percentages of organic vs. inorganic components of the bone?
Quiz_________________?
3
, 1 layer -
ANSWER✅
How many layers are found in the stratum basale?
Quiz_________________?
1. begins at primary ossification center (middle cartilaginous shaft of long bones)
2. continues at secondary ossification centers (larger "long bones" contain multiple
secondary centers) -
ANSWER✅
Steps of ossification (for endochrondral bone formation)
Quiz_________________?
1. Formation of hematoma- mass of clotted blood forms at the fracture site
2. Formation of soft callus- collagen fibers and fibrocartilage form a soft callus
3. Conversion to hard callus- osteoblasts deposit a temporary bone collar around the
fracture
4. Bone Remodeling- osteoblasts deposit spongy bone which is gradually converted to
compact bone; fracture usually leaves a slight thickening -
ANSWER✅
What are the steps in bone repair for a simple fracture?
Quiz_________________?
1. Giantism- hypersecretion of GH
2. Dwarfism (pituitary)- hyposecretion of GH & T3/T4
3. Achondroplastic dwarfism- failure of cartilage cells to multiply and divide, affects growth
of long bones only -
ANSWER✅
4