Biology, 13.11.2019 01:31 algahimnada

Correctly order the steps in which blood travels through the heart from the time it enters from the systemic circuit until it returns to the systemic circuit.

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Aorta→ Systemic arteries →Body tissue→ Systemic Veins→Vena cava→Right atrium→Right Ventricle→ Pulmonary artery →Lungs →Pulmonary vein→ Left Atrium →Left Ventricle→Aorta

Explanation:

Steps by which blood travels trheough heart from the time it enters the systemic circulation until it returns the systemic circulation.:

Aorta takes the Oxygenated Blood from the Heart and distributes it to the body tissues throughsystemic arteries.The deoxygenated blood from the tissues diffuses out into the capillaries and to the systemic veins.Veins join to form the two venacava, the superior vena cava in Inferior vena cava.The vena cava pours deoxygenated blood into the Right atrium.The deoxygenated blood is pumped into right ventricle through the tricuspid valve.The Right ventricle pumps the deoxygenated blood to the lungs throught the pulmonary artery.The blood that enters the lung gets oxygenated and is taken up by pulmonary vein . The oxygenated blood is then pumped into the left atrium by the pulmonary vein..The oxygenated blood from the left atrium is pumped into left ventricle through bicuspid valve.The oxygenated blood is then pumped into aorta by the Left ventricle through the aortic valve.

Answer from: Quest

fertilization, pictured in figure 24.23a is the process in which gametes (an egg and sperm) fuse to form a zygote. the egg and sperm each contain one set of chromosomes. to ensure that the offspring has only one complete diploid set of chromosomes, only one sperm must fuse with one egg. in mammals, the egg is protected by a layer of extracellular matrix consisting mainly of glycoproteins called the zona pellucida. when a sperm binds to the zona pellucida, a series of biochemical events, called the acrosomal reactions, take place. in placental mammals, the acrosome contains digestive enzymes that initiate the degradation of the glycoprotein matrix protecting the egg and allowing the sperm plasma membrane to fuse with the egg plasma membrane, as illustrated in figure 24.23b. the fusion of these two membranes creates an opening through which the sperm nucleus is transferred into the ovum. the nuclear membranes of the egg and sperm break down and the two haploid genomes condense to form a diploid genome.

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