Question

the integumentary system, part 1 – skin deep – crash course a&p #6

1. your skin protects your body against _, _, and extreme _, maintains your balance of fluids, and even synthesizes vitamin _ for your own personal use.
2. if you could spread it out, your skin would cover an area of _
3. the key to your integumentary system is _
4. label the diagram with the 3 main layers of the skin.
5. you lose enough cells from your epidermis every day to completely replace it every _ to _ weeks.
6. your skin, being your outer defenses, contains a lot of _ system cells.
7. your _ skin can be found on the palms of your hand and the bottom of your feet and contains _ layers of skin.
8. the epidermis is avascular, which means that all the oxygen and nutrients that its cells need come from _ below it.
9. the _ radiation in sunlight can damage the epidermis, causing the elastin to break down, leading to a leatherface condition. it can also suppress your _ system.
10. the dermis is full of _ vessels, _ fibers, parts of your sweat and oil glands with ducts that lead to the surface of your skin.
11. the papillary layer of your dermis contains friction ridges that we know better as _

Explanation:

1. "Your skin protects your body against pathogens and extreme temperatures, maintains your balance of fluids, and even synthesizes vitamin D for your own personal use."
2. If you could spread it out, your skin would cover an area of about 2 square meters.
3. The key to your integumentary system is skin.
4. The 3 main layers of the skin (from top - to bottom for the diagram) are epidermis, dermis, hypodermis.
5. You lose enough cells from your epidermis every day to completely replace it every 4 to 6 weeks.
6. Your skin, being your outer defenses, contains a lot of immune - system cells.
7. Your thick skin can be found on the palms of your hand and the bottom of your feet and contains more layers of skin.
8. The epidermis is avascular, which means that all the oxygen and nutrients that its cells need come from the dermis below it.
9. "The ultraviolet radiation in sunlight can damage the epidermis, causing the elastin to break down", leading to a "leatherface condition". It can also suppress your immune system.
10. The dermis is full of blood vessels, collagen fibers, parts of your sweat and oil glands with ducts that lead to the surface of your skin.
11. The papillary layer of your dermis contain "friction ridges" that we know better as fingerprints.

Answer:

1. "Your skin protects your body against pathogens and extreme temperatures, maintains your balance of fluids, and even synthesizes vitamin D for your own personal use."
2. If you could spread it out, your skin would cover an area of about 2 square meters.
3. The key to your integumentary system is skin.
4. The 3 main layers of the skin (from top - to bottom for the diagram) are epidermis, dermis, hypodermis.
5. You lose enough cells from your epidermis every day to completely replace it every 4 to 6 weeks.
6. Your skin, being your outer defenses, contains a lot of immune - system cells.
7. Your thick skin can be found on the palms of your hand and the bottom of your feet and contains more layers of skin.
8. The epidermis is avascular, which means that all the oxygen and nutrients that its cells need come from the dermis below it.
9. "The ultraviolet radiation in sunlight can damage the epidermis, causing the elastin to break down", leading to a "leatherface condition". It can also suppress your immune system.
10. The dermis is full of blood vessels, collagen fibers, parts of your sweat and oil glands with ducts that lead to the surface of your skin.
11. The papillary layer of your dermis contain "friction ridges" that we know better as fingerprints.