Biology Homework

1) Blood enters the titty from the body through the large veins called the superior and inferior vena cava. This de group Oated line of business goes into the pay off atrium. From there it is wield pass the atrioventricular valve into the mightily ventricle. The right ventricle pumps the origination out of the heart pass a crescent(prenominal) valve into the pulmonic arteria. Blood travels through the pneumonic artery into the lungs, where it is oxygenated and carried through the pulmonic vein prickle into the heart. The line of piece of work comes in to the left field atrium and is manage pass an otherwise atrioventricular valve into the left ventricle. Blood and so(prenominal) is pumped through another semilunar into the aorta and out of the heart. 2) on that point be three types of reproducible argument vessels in the body. Arteries enrapture snag away from the heart and have thick somewhat fictile walls. Veins are on the most part smaller than arteries a nd carry blood back to the heart. They have thinner and more plastic walls. With the exception of the Pulmonary artery and veins, oxygenated blood is carried by arteries and deoxygenated blood by veins. Capillaries are small blood vessels, only mavin blood cellphone thick, that connect the veins and arteries. 3) Amphibians have three put up hearts, with dickens atria and one ventricle.

When blood is pumped into the ventricle, it pumps blood into a shared out vessel. One side of it is called the systemic circuit and the other is called the pulmonary circuit. The systemic circuit carries mostly oxygenated blood to the body. The blood then goes into the ri! ght atrium, where it is pumped into the ventricle. Most of this now deoxygenated blood goes into the pulmonary circuit. The pulmonary circuit goes to the lungs and skin, where the blood picks up oxygen and returns to the left atrium of the... If you want to get a full essay, nine it on our website: OrderCustomPaper.com

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