Closed Circulatory System

A reason a Earthworm's gas exchange process is so beneficial is because it requires only a very small amount of energy (36 - 38 ATP). All living things need ATP to survive as it is what distributes energy to an organism.

The cardiovascular system consist of the heart, also known as the circulatory system. The major organs in this system is the heart, blood,capillaries, veins and arteries. When I hear cardiovascular system I automatically think about life itself. We have to have the heart in order to survive. The heart is the major organ in the cardiovascular system, it pumps blood throughout the body to organs, tissue, and cells. Think of the heart as being the fuel pump on the car. The fuel pump has to pump the gas to the engine to keep that car running. Same thing with the heart the heart has to pump blood to our bodies in order for us to run. Then you have the blood it's job is to carry oxygen and nutrients to every cell in the body and to remove any waste

4. Locate the clitellum (copulatory organ); this structure is closest to the anterior of the earthworm.

Basically speaking, an earthworm has two muscles, circular and longitudinal, that allow for locomotion with the muscular system. They run throughout their entire bodies and also help with contraction.

1.The fluid surrounding tissue cells is called? interstitial fluid.2.What are the functions performed by the circulatory system?-The circulatory system supplies oxygen and nutrients to our body by working with the respiratory system.- It also helps carry waste and carbon dioxide out of the body3.What is the fluid type that holds many of the human body fluids? Intracellular fluid4. Name fluids that are nearly identical in content except for proteins. Plasma and interstitial fluids.5.What function of blood is most critical to life on a second to second basis? Blood Regulation6.What fluid has the highest concentration of proteins? Intracellular fluids7.What is the most prevalent positive ion in interstitial fluids? Sodium8.What is the principal

The Circulatory system is responsible for the transport of blood throughout the body. The Circulatory system has many organs. The main components are the heart, the blood, and the blood vessels. It also consists of arteries, arterioles,

When society thinks about crayfish and earthworms they become extremely curious about how their bodies operate because of how they are made up. I will give a brief synopsis of both animals before going into major detail about them. According to the online website named dictionary.com, it says that an earthworm is a burrowing annelid worm that lives in the soil. Earthworms play an important role in aerating and draining the soil and in burying organic matter (Dictionary). Crayfish are nocturnal freshwater crustacean that resembles a small lobster and inhabits in streams and rivers (Dictionary). Crayfish and earthworms are some very interesting animals that possess some exclusive qualities both similar and different.

They have a single closed circulatory system consisting of a two-chambered heart. Blood is pumped from the heart to the gills and then the rest of the body and back to the heart.

Earthworms burrow into the ground and create burrows in the soil, which minimize surface drainage, and facilitate in soil drainage. The earthworms can improve water holding capacity because of the increased microbial activity, the burrows, and the soil fragmentation. The roots have an easier time burrowing deeper and have access to nutrients from the channels made from the burrowing. Finally earthworms bury and have plant residue in their casts so the burrows contain both the soil and the essential nutrients and minerals (Clive A.

Introduction Earthworms have light receptors that act like their eyes, and can tell when they are in the dark versus in the light. “Their nerves can detect light, vibrations, and even some tastes, and the muscles of their bodies make movements in response. They breathe through their skin. Air dissolves on the mucus of their skin, so they must stay moist to breathe. If worms dry out, they suffocate.”

Is the circulatory system of arthropods more similar to that of annelids or of mollusks? Why?

Earthworms exist everywhere we go, but not everyone knows how they function and the reason they are helpful. I am interested in studying how Earthworms adapted to it’s environment as well as how they benefit the environment around it.

The cardiovascular system is an important part of the body, and there are many reasons why it improves performance in physical activities. An example of this was during the track unit, and especially during the longer runs. Some people who were coming in first during the 50 yard were doing horrible in something like the 400 yard because, their body could not supply is enough oxygen to the cells. This is probably due to them having a weak cardiovascular system, so they did not have the needed endurance. A second example of this was at my soccer games. One kid could not last the whole game and had to sit a lot. This is also because of a lack of endurance caused by a weak cardiovascular system. If they practiced more, and went on some runs

veins to the tissues of the body. These walls do not let out blood but

The Common Earthworm, Lumbricus terrestris, is a terrestrial invertebrate found abundantly across the United States. Physically, it has a red-brown color, can measure in length up to fourteen inches, and can weigh up to .39oz. The body of the earthworm is made up of ring-like segments, annuli, and covered in small bristles, setae, that help the worm to move and burrow (National Geographic, 2017). The earthworm uses peristaltic waves as its form of locomotion (Kuroda et al, 2014). Within the segments, the earthworm has two types of muscles, circular and longitudinal. The contraction of the circular muscles causes the segment to become shorter, while the contraction of the longitudinal muscles causes the segment to lengthen. The resulting pattern in all segments of the earthworm’s body causes it to move forward in a wave-like pattern, with one segment moving after another (Piearce, 1983). There are kinetics involved in the locomotion of earthworms that are directly related to its morphology. Research conducted by scientists from the zoological department at Cambridge University on the locomotory reflexes in the earthworm found that the tactile sense organs on the ventral surface of the earthworm affect the longitudinal contractions. Therefore, when an earthworm moves over an irregular surface, its tension reflexes are altered depending on the certain environment (Gray & Lissmann, 1938).