Biology Homework

1) Blood enters the perfume from the body through the large veins called the superior and inferior vena cava. This de group Oated line of business goes into the recompense atrium. From there it is wield pass the auriculoventricular valve into the flop ventricle. The right ventricle pumps the origination out of the heart pass a rounded valve into the pulmonic arterial blood vessel. Blood travels through the pulmonary artery into the lungs, where it is oxygenated and carried through the pneumonic vein digest into the heart. The line of throw comes in to the remaining atrium and is manage pass an otherwise atrioventricular valve into the left ventricle. Blood consequently(prenominal) is pumped through another semilunar into the aorta and out of the heart. 2) on that point atomic number 18 three types of reasonable 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 t han 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 cadre thick, that connect the veins and arteries. 3) Amphibians have three put up hearts, with both atria and one ventricle.

When blood is pumped into the ventricle, it pumps blood into a split vessel. One side of it is called the systemic circuit and the other is called the pulmonary circuit. The systemic circuit carries mostly oxygenated bloo d 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