digestive system
The digestive system of an Earthworm is more or less much different than that of a Humans. The organs and the tube going along the digestive system are highly specialized. The food first enters through the Earthworms mouth. Once the Earthworm opens its mouth, the pharynx open up too. From the pharynx, the food goes down to the esophagus which then leads the food to the crop. The crop is an organ in the digestive system that is used to store food, and its thin wall helps it with doing so. From the Crop, the food goes further down into the Gizzard. The Gizzard is an organ that has a thick wall so that it can break down the food. From there, the food goes down to the intestine where all its nutrients are taken out, and it finally gets excreted into out of the anus.
nervous system
Like many organisms, the Earthworms nervous system consists of a brain which is found on both sides of the pharynx. Like the grasshopper, the brain is also connected to a ventral nerve chord. All messages to and from the brain travel through the ventral nerve chord, just like the spine of a Human. Neurons go around the body of the Earthworm, sending message to and from the brain via the ventral nerve chord.
circulatory system
The circulatory system consists of 5 aortic arches, organs which we cab say acts like heart. Each blood vessel pumps blood from the dorsal blood vessel through the ventral blood vessel. The blood vessels contain dissolved oxygen which the Earthworm has obtained through the surface while it was crawling. Carbon dioxide is taken out by diffusion through the Earthworm's skin.
respiratory system
The respiratory system in an Earthworm is really fascinating. It only consists of the skin! There are no major organs, just the skin. The Earthworms skin must be moist in order for it to get oxygen through it, so if the skin isn't moist, the Earthworm will die.
skeletal system
Earthworms do not have an endoskeleton or an exoskeleton, so there is nothing much to talk about really
differences between earthworms and humans
Earthworms have no skeleton while Humans have an endoskeleton.
Earthworms have 5 aortic arches while Humans have one heart.
Earthworms get oxygen through their skin while Humans breathe in and out for oxygen.
Humans do not have a crop or a gizzard.
Humans have a spine instead of a ventral nerve chord.
Earthworms are invertebrates while humans are vertebrates
Earthworms have 5 aortic arches while Humans have one heart.
Earthworms get oxygen through their skin while Humans breathe in and out for oxygen.
Humans do not have a crop or a gizzard.
Humans have a spine instead of a ventral nerve chord.
Earthworms are invertebrates while humans are vertebrates
similarities between earthworms and humans
Both are animals.
Both have the same concept of systems.
Both have the same type of organs, just different sizes.
Both must digest food for energy.
Both need air to breathe.
Both have the same concept of systems.
Both have the same type of organs, just different sizes.
Both must digest food for energy.
Both need air to breathe.
taxonomic classification
Domain: Eukarya
Kingdom: Animalia
Phylum: Anneilida
Class: Oligochaeta
Kingdom: Animalia
Phylum: Anneilida
Class: Oligochaeta