Arthropods have an open circulatory system, in which blood is pumped through a tubelike heart and out into the body cavity. In comparison, vertebrates have a closed circulatory system, in which blood is contained inside a system of arteries, veins, capillaries, and a heart. In an open circulatory system, blood is pumped through the heart and into the body, where it comes in direct contact with organs and tissues. The stiff exoskeleton of arthropods also helps control blood pressure. Because an exoskeleton does not change shape, when the heart pumps blood out into the body, the exoskeleton keeps the blood contained, while body movements keep it
Geraldine Brooks the author of People of the Book conveys the story of Sarajevo Haggadah. In the chapter “An Insect’s Wings,” Lola, a young Jewish girl, experiences running away from Nazis and coming back to Sarajevo. In this chapter, it also shares some details of how the famed Sarajevo Haggadah was saved from WWII. This chapter shares the journey of Lola and all the unpleasant events she went through.
The circulatory system and respiratory system share a highly important relationship that is crucial to maintaining the life of an organism. In order for bodily processes to be performed, energy to be created, and homeostasis to be maintained, the exchange of oxygen from the external environment to the intracellular environment is performed by the relationship of these two systems. Starting at the heart, deoxygenated/carbon-dioxide (CO2)-rich blood is moved in through the superior and inferior vena cava into the right atrium, then into the right ventricle when the heart is relaxed. As the heart contracts, the deoxygenated blood is pumped through the pulmonary arteries to capillaries in the lungs. As the organism breathes and intakes oxygenated air, oxygen is exchanged with CO2 in the blood at the capillaries. As the organism breathes out, it expels the CO2 into the external environment. For the blood in the capillaries, it is then moved into pulmonary veins and make
There is no doubt that arthropods are an extremely successful group of animals, with an estimated 5-10 million species worldwide[1], and this can be attributed to having an exoskeleton; it provides many benefits, such as protection from parasitism and other threats. However, one major disadvantage of having an exoskeleton is the limitations that an inelastic cuticle can place on growth. The exoskeleton provides protection, but when freshly moulted the animal is soft and vulnerable, as well as having limited mobility and use of appendages; many seek shelter before moulting[2]. There are similarities and differences between the moult cycles of all the arthropods, however only crustaceans and insects will be discussed here.
The functions of rhizoids are root-like structures that absorb water and transport materials to the plants. The position of the archegonium and antheridium relates to their reproductive function by having the archegonium located under the eggs so that when the antheridium sperm is dispersed, it can reach the egg better. Antheridium is upright so that the sperm can be dispersed on top and reach the archegonium egg to fertilize the plant. They are also located near each other so that when there is rainfall, the sperm splashes out and onto the archegonium.
I learned that the phylum Annelids can consist of many creatures such as earthworms, leeches, and scale worms can adapt to a variety of environments. Annelids’ bodies are divided into segments which are seen as rings by the naked eye. They have muscles which help them move by contracting their longitudinal and circular muscles. When Annelids take in food, the food particles travel through one end of the body and are excreted out the other side. The video enhanced my understanding about Annelids because without seeing different species and what classified them as Annelids I would have never known an earthworm or a leech fell into that phylum.
Chondrichthyes vs Arthropod The black widow is most easily recognized by the hourglass marking on the underside of its abdomen. When bitten, a neurotoxin is released that can cause dull pain and cramping in muscles, that can be accompanied by sweating and vomiting. Less than 1% of black widow bites result in death. Black widow spiders are usually not aggressive. If disturbed, they will retreat to a corner of their web.
The Structure and Functions of the Arteries Arteries are blood vessels that convey blood from the heart to the tissues of the body. The arteries expand and then constrict with each beat of the heart, a rhythmic movement that may be felt as the pulse. Arteries are usually named from the part of the body that they are found, for example; brachial artery found in the arms, metacarpal artery found in the wrist; or from the organ which they supply as the hepatic artery supplies the liver, pulmonary artery brings deoxygenated blood the lungs. The facial artery is the branch of the external carotid artery that passes up over the lower jaw and supplies the superficial portion of the face; the haemorrhoidal arteries are three vessels that supply the lower end of the rectum; the intercostal arteries are the arteries that supply the space between the ribs; the lingual artery is the branch of the external carotid artery that supplies the tongue. The structure of the artery enables it to perform its function more efficiently.
ohn Steinbeck's “Cannery Row” offers many interpretations, especially when viewed through the lens of the Holy Bible. From the Christ like figure of Doc to his apostles, Mack and the boys, Cannery Row is ripe with religious tropes. However, Doc is also considered to be quick to anger at times, and carries with him many themes found throughout the Old Testament texts and some legends that are even more aged. However, if we consider Doc to be the messianic figure he is then it wasn't the party that Doc had a problem with, nor that it was held without his knowing on his property. The issue arises with the process by which Mack and the boys use to fund the party. The green frogs harvested ultimately causes Mack and the boys to succumb to greed in an effort to praise Doc. The collection of frogs used as a currency is what sends Doc into a rage.
The heart serves as a powerful function in the human body through two main jobs. It pumps oxygen-rich blood throughout the body and “blood vessels called coronary arteries that carry oxygenated blood straight into the heart muscle” (Katzenstein and Pinã, 2). There are four chambers and valves inside the heart that “help regulate the flow of blood as it travels through the heart’s chambers and out to the lungs and body” (Katzenstein Pinã, 2). Within the heart there is the upper chamber known as the atrium (atria) and the lower chamber known as the ventricles. “The atrium receive blood from the lu...
In this paper I will clarify the relation between the integumentary system and the skeletal system. During this paper I will address how the two systems work together to maintain homeostasis and what occurs when balance is not maintained between the integumentary and skeletal system. During this paper I will explain how osteoporosis is directly linked between both the integumentary and skeletal system and ways to prevent or yield this disease.
The Sea Organ is a natural musical instrument, seventy meters long with thirty-five organ pipes built under concrete. The instrument was made by the architect Nikola Bašić as part of the project to redesign the new city coast, and the site was opened to the public on 15 April 2005. The Sea Organ’s pipes are located so that the sea water and wind movements produce musical sounds that are heard by citizens passing through the area. Since the sea’s waves and wind movements are unpredictable, the organ provides never-ending concert. Each organ pipe is blown by a column of air, pushed in turn by a column of wave-moved water, through a plastic tube inside of the water. The 7 groups of musical tubes are alternately tuned to two musically
As a giant herbivore, the Diplodocus fed primarily on conifers, ginkgo leaves, ferns, and other soft leafy vegetation available at the time (Young et al., 2012). Additionally, there currently stand two main feeding theories when it comes to the Diplodocus. The Diplodocus, with shorter front legs, is often envisioned as being a low browser where it would keep its neck close to the ground and feed off the leafy ground vegetation as it would have been in a more comfortable posture for feeding. As popularized by renowned paleontologist Robert Bakker, the second feeding theory depicts the Diplodocus feeding in a tripodal stance, where it could rear up on its hind legs with its tail acting as a third support so that it could reach up and feed on the tree canopy. This adaptability would mean that the Diplodocus did not have to compete with other low browsing herbivores such as the Stegosaurus for food (Farlow et al. 1997).
Have you ever wanted to slap eight people at once? Or if you're more of a mushy, touchy, feely person, have you ever wanted to hug eight people at once? An octopus can do either or both of these if they want to! So you know an octopus is lucky being able to do this but what's an octopuses habitat? Since they can slap eight things at once do they have predators? Or since we're on the facty facts subject where do they live?
reduces the surface tension of the water lining the alveoli. Mammals have a circulatory system as their gas exchange system. It operates by the oxygen that is diffused being delivered to respiring body cells and returning with carbon dioxide to the lungs due to the blood vessels lining the alveoli transporting these gases. As diffusion would take much longer to reach the cells in a much larger organism, the blood flow through the capillaries guarantees that the oxygen reaches the distant cells more efficiently. This is why mammals require a transport system due to their large size as otherwise oxygen would take too long to diffuse from the gas exchange surface to the body tissues. The circulatory system in a mammal works by the blood circulating
The skeletal muscles throughout the body are muscles that connect to the skeletal system via tendons, the use of these muscles are to make the movement of the skeletal system. The smooth muscles in the body are the muscles that can not control their movement, smooth muscles are found around some organs. The cardiac muscles are the heart muscles, the heart is a muscle itself, and it does not take any breaks, it pumps blood throughout the body every second of everyday the being that it is in is alive, for the most part. The bones in the body are throughout the body according to livescience.com are used for “support, movement, protection, blood cell production, calcium storage, and endocrine regulation”. Cartilage is tissue, cartilage is found where the body needs a little more flex than in more places (interactive-biology.com). Ligaments in the body are found where joints are, actually joints are made up of many ligaments. The two systems work with the other systems to provide support and allow movement throughout the body, the systems work together by having the nervous system send signals to skeletal muscles in the body, which then contract to produce movement. In bone marrow blood cells are made due to hemocytoblasts and with the right elements creates