Overall importance of the integumentary system:
- helps to provide circulation throughout organism to keep organism alive.
- the body covering helps to maintain Homeostasis: body temperature, lubrication ect.
- provides efficient protection for organisms against outside forces such as weather and predators.
- contains a product called melanin: derived from the amino acid tyrosin which provides pigment in animals.
- the integumentary system is made up of 3 layers in mammals and humans: Epidermis, Dermis, and Sebaceous layer.
evolutionary disadvantages and advantages:
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjXmKBWWt_sjYgiQYGHeUuT-m369O9746SM2zotmL36DKtcGFHIO1zoIMKRdEruyBXuLfWK_meSLeMmkaj4lshyphenhyphen_11lnZu605Pq22CETppOs5YixcQouWvInvtDPnwxdwpMIQ0WSXWhR9aq/s320/layers+of+skin.jpg)
simalarities depending on color between organisms:
EARTHWORM:
- body is segmented to provide easier movement
- slimy body covering provides almost another layer of protection and used for movement
- containing only two layers of very thin skin to allow for diffusion (is the movement of molecules from an area of higher concentration to an area of lower concentration)
- Setae or bristles alongside the underbelly of worm are like feet and hands to grab and move to prevent sliding.
- having no respiratory system the earthworm breathes through its skin.
CRAYFISH:
- exoskeleton that is hard and bumpy provides protection
- contains melanin that gives the crayfish its color
- shell provides structure acting like its skeletal system as well.
- not permeable
- frogs do not have the subcutaneous layer of skin.
- contains large sums of melanin
- skin designed for camouflage and survival
- mucus all over body of frog provides lubrication to escape from prey ad to move easily in water.
- frogs drink through permeable skin along with respiration and protection.
WHITE RAT:
- skin on face contains whiskers
- like humans there skin has layers
- helps to regulate body heat
- also contains melanin
- gets rid of waste through pores.
- skin is permeable
This is a great start! Make sure to include evolutionary advantages and disadvantages of EACH organism, as well a the overall ones you have so far.
ReplyDeleteAlso, remember that you are comparing the systems, not just listing their features. You could make a table, or color code to show similarities and differences. . .or you could just write that they are similar or different. Totally up to you!
Really good beginning though!
You also need more pictures. Make sure you have a picture demonstrating the integumentary system of each organism
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