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skin
ck u
| Question | Answer |
|---|---|
| list 2 main regions that makeup the skin | epidermis and dermis |
| list the layers of the epidermis from top to bottom | stratum corneum (top) granulosum spinosum Basale (bottom) |
| where is all the dead skin cells | stratum corneum |
| where does mitosis take place and make new skin cells | spinosum Basale |
| thick skin is located where | palm, fingertips, and soles of the feet |
| thin skin is located where | face, arms, and hands |
| where are dead skin cells found | top of epidermis, stratum corneum |
| why are the skin cells dying | the skin cells that reach the top layer of the epidermis, they're too far away from the nutrients that are being leaked from the blood vessels in the dermis, they're cut off from nutrients |
| what provides nutrients | blood vessels, they leak |
| what type of burn if it's just red | 1st degree |
| blisters on burn | 2nd degree |
| goes to dermis, burns nerves and you don't feel it and it's scarred | 3rd degree |
| identify the types of skin cancer | basal cell carcinoma, squamous cell carcinoma, melanoma |
| for a tattoo to be permanent, what must happen | the ink must be in the dermis |
| what is the top layer of the skin | epidermis |
| what is the bottom layer of the skin | dermis |
| what is the clear, extra layer in the thick skin | stratum lucidum |
| which one is the worst skin cancer | melanoma |
| what is the word that means no cancer | beneye |
| explain the ABCDE rule used to identify skin cancer | Asymmetry- 2 sides not matching, not clear circle Border irregularity- jagged edges Color- color changes Diameter- size changes Evolution- changes |
| as completely and specifically as possible, describe the journey of a single epidermal skin cell from birth to death | The bottom of the epidermis is the stratum Basale where mitosis takes place and formed new skin cells. The next layer is the stratum spinosum. The next layer that the move up to is the stratum granulosum. |
| continue 2 on skin cells | The last layer of the epidermis is the stratum corneum, where the newly skin cells are too far away from the blood vessels that leak out nutrients in the dermis, so they die. |
| not a real phase in mitosis | interphase |
| 1st phase of mitosis, nuclear membrane breaks up, chromosomes become visible | prophase |
| 2nd phase of mitosis, chromosomes line up at the middle | metaphase |
| 3rd phase of mitosis, chromosomes move towards opposite poles | anaphase |
| 4th phase of mitosis, cytokinesis when the actual cleavage gets ready to divide to 2 identical daughter cells | telophase |
| interphase | not a real phase in mitosis |
| prophase | 1st phase of mitosis, nuclear membrane breaks up, chromosomes become visible |
| metaphase | 2nd phase of mitosis, chromosomes line up at the middle |
| anaphase | 3rd phase of mitosis, chromosomes move towards opposite poles |
| telophase | 4th phase of mitosis, cytokinesis when the actual cleavage gets ready to divide to 2 identical daughter cells |
| describe a plausible explanation as to how humans acquired thick skin, an extra layer of skin found on their palms, hands, and feet | Humans with thick skin have stratum lucidum on their palms, hands, and feet through natural selection. Early humans with thicker skin were protected from cuts which helped them survive and pass on the trait to future generations |
| what is the most common skin cancer | basal cell carcinoma |
Created by:
jennitired