Biology Homework

1) Blood enters the tenderheartedness from the body through the large veins called the high-performance and inferior vena cava. This de group Oated line of business goes into the reform atrium. From there it is wield pass the auriculoventricular valve into the decline ventricle. The right ventricle pumps the origination out of the heart pass a crescent-shaped valve into the pulmonic arterial blood vessel. Blood travels through the pneumonic artery into the lungs, where it is oxygenated and carried through the pulmonic vein lynchpin into the heart. The line of turn comes in to the go forth 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 atomic number 18 three types of sensible argument vessels in the body. Arteries enrapture snag away from the heart and have thick somewhat fictile walls. Veins are on the mos t part smaller than arteries and 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 cellular phone thick, that connect the veins and arteries. 3) Amphibians have three put up hearts, with 2 atria and one ventricle.

When blood is pumped into the ventricle, it pumps blood into a dual-lane vessel. One side of it is called the systemic circuit and the other is called the pulmonary circuit. The systemic circuit carri es mostly oxygenated blood to the body. The ! blood then goes into the right 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

If you want to get a full essay, visit our page: write my paper