The overall importance of the respiratory system is to supply blood with oxygen in order for the blood to deliver oxygen to all parts of the body, perform gas exchange and cellular respiration, and inhale oxygen and exhale carbon dioxide, also requires a functional connection between the respiratory and circulatory system. There are 3 types of organs that organisms in their respiratory system:
- Gills - used by fish and other organisms that live underwater. Designed to work underwater and it's not used for air. Allows underwater organisms take in oxygen from the surrounding water and eliminate carbon dioxide from the blood.
- Skin- skin respiration or "aquatic respiration" takes place through the moist skin in most amphibians. Happens by diffusion.
- Lungs- used by mostly land organisms like mammals. Helps organisms breathe and performs gas exchange . Helps let out waste and gases like carbon dioxide and inhale oxygen
The worm is very different compared to humans. It doesn't have lungs and it breathes through its skin. It go through a process called diffusion, where oxygen and carbon dioxide passes thorough the skin. Its skin need to be very moist in order to perform diffusion because they need to absorb carbon and let out carbon dioxide. Earthworms are very different from organisms with gills and lungs because other organisms breathe in to get oxygen into their body for their cells and blood also organs to work properly. The Earthworm is very similar to the frog because it also breathes through its skin. The earthworm has a external respiratory system. A advantage of this is that it is easier for the oxygen to diffuse into the worm's skin. A disadvantage of performing gas exchange is that it will be harder for the system to perform gas exchange if the skin became to dry and it can also cause the worm to die if the skin isn't moist enough.
The crayfish uses gills to breathe and it is very different compared to humans and organisms that live underwater. Its gill plates are mostly full of blood capillaries for gas exchange. The crayfish's gills are found between the crayfish body wall and carapace. Crayfish have gills that look feathery because it helps with gas exchange It walks in order to breathe because it keeps the gills moving and oxygenated water going under the carapace. This is very different from other organisms because some don't need to walk in order to breathe and many don't live underwater in order to perform this. A advantage of having gills is
when the crayfish moves its legs in the water, they get more oxygen. A disadvantage is low amount of oxygen in water, which can be hard for the crayfish to breathe if it isn't walking or if the water is polluted.
The frog is very similar to the worm but different to organisms with lungs or gills. The frog has blood capillaries and its skin has glands called cutaneous glands underneath skin. The frog breathes by doing diffusion. The skin also need to be moist just like the worm's skin. The frog's lungs do work but it is not well developed and is placed anterior of the body. It has alveoli that has blood capillaries. According to Ehow.com, the frog's lungs take in 65% oxygen. A advantage of this is that it's easier for the frog to absorb oxygen. But like the worm, a disadvantage for the frog is that it can die if the skin isn't moist enough.
The white rat is the same as the human's respiratory system but different from the organisms with skin and gills respiratory system. Oxygen is used for the blood. Lungs are the respiratory organs. The way for air is by external nostrils, pharynx, larynx, trachea and bronchi. Lungs has alveoli where external respiration takes place. Alveoli is in charge of performing gas exchange. The more alveoli, the bigger the surface area, is the more oxygen it will have. The rat is similar to the human's because they both share the same number of organs and same number of functions that their respiratory system both do.
Diana,
ReplyDeleteSee if you can consolidate your first paragraph into a few sentences. You seem to say the same thing a few times, and you probably don't need that.
Great job on the earthworm! The only thing you need to add is advantages and disadvantages of the system. Why would it be good or bad to have gas exchange through the skin?
Ditto on the crayfish. Make sure you talk about why it would be an advantage or a disadvantage.
Good job on frog. Make sure you cite your sources if you used something not your own!
Nicely done, mentioning surface area in your rat section! Good call.