VN 17 TEST 3 STUDY GUIDE- DONE Flashcards
1.DESCRIBE LAYERS OF THE SKIN NAMES & FUNCTIONS
1.Epidermis
2.Dermis
SKIN FUNCTIONS: sensation, protection, thermoregulation, and secretion. Stores fats & Glucose, manufactures vitamin D.
A. WHAT HAPPENS TO THE DERMIS W/AGE?
Becomes more fragile.
2a. STRATUM CORNEAUM
Forms the outermost layer of the epidermis.
Consists of dead cells converted to protein. This layer is the physical barrier that provides protection.
2b. STRATUM LUCIDUM
Contains cells that are transparent & flat
2c. STRATUM GRANULOSUM
Consists of 2 or 3 layers of flattened cells
2d. STRATUM SPINOSUM
Consists of several layers of prickly or spiney shaped cells
2e. STRATUM GERMINATIVUM
Deepest layer. Regenerative layer
- WHAT IS THE DIFFERENCE BETWEEN MELANOCYTES & MELANIN?
Melanocytes are responsible for producing skin color.
Melanin Is the variations in skin color.
- WHAT ARE THE DIFFERENCES BETWEEN THE DEGREES OF BURN?
First degree burns involve just the epidermis.
Second degree burns involve both the epidermis & dermis.
Third degree burns the epidermis & dermis are completely destroyed.
5.WHAT IS HAIR COMPOSED OF? WHAT PARTS ARE VISIBLE?
Hair is composed of cuticle, cortex & the medulla.
The shaft is the visible part of the hair.
5a. EXPLAIN GOOSEBUMPS?
Goosebumps happen when the arrector pili muscle contracts involuntary & it pulls on the hair follicle.
- WHAT IS SIGNIFICANT ABOUT THE BED OF A NAIL?
This is where the nail grows from.
- WHAT ARE SUBACEOUS GLANDS & WHAT DO THEY PRODUCE?
Develop along the walls of hair follicles & produce sebum.
- WHAT IS SODIUM CHLORIDE TO SWEAT?
Salt
- WHAT ARE THE DIFFERENT TYPES OF SWEAT GLANDS & WHICH IS MOST COMMON?
Eccrine & Aprocrine sweat glands.
Most common is eccrine.
