Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
39 Cards in this Set
- Front
- Back
- 3rd side (hint)
|
What does the Integumentary system include? |
Skin and all the derivatives [Hair follicles, hair, nails, sweat glands, oil glands] |
|
|
|
What are the 6 functions of the Integumentary System? |
1. To protect 2. To Excrete 3. To regulate body temperature 4. To hold lots of blood vessels and blood 5. Cutaneous sensation [lots of receptors in the skin] 6. Vitamin D synthesis |
|
|
|
How does the Integumentary System protect? |
1. A chemical barrier -Makes skins more acidic so certain things don't want to grow there. 2. A Physical barrier -Skin continuity helps keep things out (eyelashes, eyebrows) 3. A Biological Barrier -Macrophages and Langerhan's cells that aid in immune system |
"Barriers" |
|
|
How does the Integumentary System Excrete? |
Sweat glands excrete H2O and Nitrogen containing wastes and NaCl (salt). |
|
|
|
Explain how the Integumentary System is a large blood reservoir. |
-When you're hot, your blood vessels dilate and more heat is releases. -When you're cool, your blood vessels constrict and less heat is released. |
-Dilate means bigger or more. -Constrict means to make smaller. |
|
|
Explain Cutaneous Sensation. |
Cutaneous sensation is when you FEEL something, such as texture, pressure, pain, temperature. |
s e n s a t i o n. |
|
|
What is Vitamin D synthesis? |
Cholesterol in your skin gets changed to Vitamin D by the sun which helps your bones. |
"Sunny D" |
|
|
How long is the surface area of the skin |
15-20 ft. |
|
|
|
How much does the skin weigh |
9lbs. |
|
|
|
The skin is made up of how many cells? |
3 million |
|
|
|
What 2 main regions does the skin consist of? |
Epidermis Dermis |
|
|
|
Top layer of skin |
Epidermis |
|
|
|
2nd Layer of skin |
Dermis |
|
|
|
Below the skin is... |
Hypodermis |
|
|
|
Tissue that Epidermis is composed of |
epithelial tissue |
|
|
|
Tissue that Dermis is composed of |
Connective Tissue |
|
|
|
Tissue(s) that Hypodermis is composed of |
Adipose/Areolar tissue |
|
|
|
Characteristic of Hypodermis |
as insulation and cushioning |
|
|
|
5 layers of Epidermis [from top to bottom] |
1. Stratum Corneum 2. Stratum Lucideam 3. Stratum Granulosum 4. Stratum Spinosum 5. Stratum Basale |
|
|
|
Epidermis is made up of 4 to 5 layers of cells, if it has 5 layers it is found in... |
Thick skin such as the palm and the soles of the feet. |
|
|
|
The 4 cell types of Epidermis |
1. Keratinocytes 2. Melanocytes 3. Merkel cells 4. Langerhan's cells |
|
|
|
What is the most abundant cell type in Epidermis |
Keratinocytes |
|
|
|
Keratinocytes are cells that... |
produce keratin into fibrous protein |
|
|
|
Melanocytes produce.. |
Melanin (the paler you are, the less melanin you have) |
|
|
|
What are Merkel cells |
Sensory cells |
|
|
|
Epidermis is replaced every... |
35-45 days |
|
|
|
What two stages in Epidermis is mitosis present? |
Stratum Basale and Stratum Spinosum |
|
|
|
In what layer of epidermis are the cells dying |
Stratum Granulosum |
|
|
|
What layer is only in thick skin? |
Stratum Lucideam |
|
|
|
Explain Stratum Corneum |
*20-30 cells thick *Contain all dead cells *Cells are waiting to be shed off |
|
|
|
LONG-TERM friction on the epidermis lead to.. |
Calluses |
|
|
|
SHORT-TERM friction on the epidermis lead to... |
blisters |
|
|
|
The layer Dermis contains |
lists of blood vessels, lymphatic vessels(White Blood cells), and nerve endings |
|
|
|
2 layers of Dermis |
Papillary Layer and Reticular Layer |
|
|
|
The Papillary Layer is the closest to the Epidermis and is the |
Thinnest |
|
|
|
The papillary Layer makes up.. |
Your fingerprints |
|
|
|
The reticular layer is the.. |
thickest |
|
|
|
What lives in the Reticular layer |
Hair follicles, sweat, oil glands |
|
|
|
The reticular layer gives strength and.. |
elasticity to the skin |
|
