VN 17 TEST 3 STUDY GUIDE- DONE

Question 1

1.DESCRIBE LAYERS OF THE SKIN NAMES & FUNCTIONS

Answer 1

1.Epidermis
2.Dermis
SKIN FUNCTIONS: sensation, protection, thermoregulation, and secretion. Stores fats & Glucose, manufactures vitamin D.

Question 2

A. WHAT HAPPENS TO THE DERMIS W/AGE?

Answer 2

Becomes more fragile.

Question 3

2a. STRATUM CORNEAUM

Answer 3

Forms the outermost layer of the epidermis.

Consists of dead cells converted to protein. This layer is the physical barrier that provides protection.

Question 4

2b. STRATUM LUCIDUM

Answer 4

Contains cells that are transparent & flat

Question 5

2c. STRATUM GRANULOSUM

Answer 5

Consists of 2 or 3 layers of flattened cells

Question 6

2d. STRATUM SPINOSUM

Answer 6

Consists of several layers of prickly or spiney shaped cells

Question 7

2e. STRATUM GERMINATIVUM

Answer 7

Deepest layer. Regenerative layer

Question 8

3. WHAT IS THE DIFFERENCE BETWEEN MELANOCYTES & MELANIN?

Answer 8

Melanocytes are responsible for producing skin color.

Melanin Is the variations in skin color.

Question 9

4. WHAT ARE THE DIFFERENCES BETWEEN THE DEGREES OF BURN?

Answer 9

First degree burns involve just the epidermis.

Second degree burns involve both the epidermis & dermis.

Third degree burns the epidermis & dermis are completely destroyed.

Question 10

5.WHAT IS HAIR COMPOSED OF? WHAT PARTS ARE VISIBLE?

Answer 10

Hair is composed of cuticle, cortex & the medulla.

The shaft is the visible part of the hair.

Question 11

5a. EXPLAIN GOOSEBUMPS?

Answer 11

Goosebumps happen when the arrector pili muscle contracts involuntary & it pulls on the hair follicle.

Question 12

6. WHAT IS SIGNIFICANT ABOUT THE BED OF A NAIL?

Answer 12

This is where the nail grows from.

Question 13

9. WHAT ARE SUBACEOUS GLANDS & WHAT DO THEY PRODUCE?

Answer 13

Develop along the walls of hair follicles & produce sebum.

Question 14

10. WHAT IS SODIUM CHLORIDE TO SWEAT?

Answer 14

Salt

Question 15

11. WHAT ARE THE DIFFERENT TYPES OF SWEAT GLANDS & WHICH IS MOST COMMON?

Answer 15

Eccrine & Aprocrine sweat glands.

Most common is eccrine.

Question 16

12. DEFINE CALLUS?

Answer 16

Thickened area of the skin that results from excess friction.

Question 17

WHAT IN THE SKIN PROTECTS US FROM THE ULTRAVIOLET RAYS OF THE SUN?

Answer 17

Melanin

Question 18

WHAT ARE THE ERRECTOR PILLI MUSCLES?

Answer 18

Bundle of smooth muscles that attach to a hair follicle

Question 19

WHAT IS SEBUM?

Answer 19

Oil substance that helps lubricate the surface of our skin

Question 20

WHAT HAPPENS TO OTHE DERMIS IN OUR ELDERLY THAT CAUSES THEM TO BE MORE SENSITIVE TO THE COLD?

Answer 20

poor blood circulation

Question 21

WHAT IS THE ORDER OF THE LAYERS OF THE SKIN?

Answer 21

1. Stratum corneum
2. stratum LUCIDUM
3. stratum granulosum
4. Stratum SPINOSUM
5. Stratum germinativum