The blood vessels that the heart "collects" blood back to the heart are. The "structure" that the heart pumps blood out is. The blood vessels that these two structures pump blood into are The blood vessels that the heart "collects" blood back to the heart are_ ,_ What is the structure of the heart that pumps blood out_ ,_ These two structures respectively pump blood into the blood vessels_ ,_

The blood vessels that the heart "collects" blood back to the heart are. The "structure" that the heart pumps blood out is. The blood vessels that these two structures pump blood into are The blood vessels that the heart "collects" blood back to the heart are_ ,_ What is the structure of the heart that pumps blood out_ ,_ These two structures respectively pump blood into the blood vessels_ ,_

This is the two circulation. Peripheral blood flows back to the superior and inferior vena cava through veins and reaches the right atrium. It enters the right ventricle through the tricuspid valve. The right ventricle contracts and pumps blood into the pulmonary artery, into the pulmonary capillary, flows into the pulmonary vein, enters the left atrium, and reaches the left ventricle through the mitral valve. The left ventricle contracts and pumps into the aorta and enters the systemic artery to supply oxygen and nutrients to the systemic capillary, From right heart to pulmonary vein is pulmonary circulation, from left ventricle to superior vena cava and inferior vena cava is systemic circulation

There is an amazing pressure in the sea. Every 10m increase in the depth, the pressure will increase by 1.03 × 105Pa. The deepest part of the ocean is the Mariana Trench in the Pacific Ocean, and the echo time of sonar detection is 15.8s. Marine investigation has confirmed that there are still many kinds of marine organisms, such as deep-sea fish. Please calculate according to the above information: (1) the density of the sea. (2) the depth of the trench. (3) the depth of the trench (4) if this kind of deep-sea fish can be caught, can it be cultured artificially? Explain the reason. (the propagation speed of sound in seawater is 1450m / s, g = 10N / kg)

(1) P = ρ g △ h → ρ = 1.03 × 105pa10n / kg × 10m = 1.03 × 103kg / m3. A: the density of sea water is 1.03 × 103kg / m3. (2) the depth of trench H = VT = 1450m / s × 15.8s2 = 11455m. A: the depth of trench is 11455m. (3) the sea water pressure that deep sea fish can bear P = ρ GH = 1.03 × 103kg / m3 × 10N / kg × 11455m ≈ 1.1 × 108pa After the deep-sea fish are caught, in the process of rising, the pressure on itself is getting smaller and smaller. If the internal pressure of the body is large and the external pressure is small, the internal organs will break. If the fish can't reach the sea surface, they will die, let alone breed

What is the deepest depth of the river when the water pressure measured by a diver at the bottom of the river is 1.0 * 10 to the fifth power Pa?
10N / kg / g

h=p/ρg=1×10^5Pa/(1×10^3kg/m³×10N/kg)=10m