Heart pumping process

First there is left ventricular ejection, through the mitral valve blood to the left atrium, through the systemic circulation blood to the right atrium, and then through the pulmonary circulation, blood to the left atrium, mitral valve ejection to the left ventricle So again and again

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1. 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_ ,_
2. In the Mariana Trench in the Pacific Ocean with a depth of 1 × 10 m to the fourth power, scientists have found fish swimming. What is the pressure on these fish? P seawater = 1.03 × 10 to the third power, kg / m to the third power 10 kg per kilogram
3. To the 10th power of 0.25 to the 20th power of x2
4. 50 power of 0.25 × 10 power of 256 × 20 power of (- 2)
5. People's life is 80 years old, then the number of heart beats in a person's life is calculated, and the result is expressed by scientific counting method
6. Nanchong Xichong County 2008-2009 junior high school mathematics final test questions (including answers)
7. If (x + 3) (X-5) = the square of X + kx-15m, then the value of K-M is A、-3 B、5 C、-2 D、2
8. It is known that the square of Y and x plus 1 is in positive proportion, and when x = 2, y = 10, find the functional relationship between Y and X
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10. If f [10x power] = x, then f [5] is equal to= Let 10 ^ x = t, then x = LGT That is, f (x) = lgx ((why can t be changed into x in LGT in this step?) So f (5) = lg5
11. A person's heart rate is 75 / min, 80 ml of blood is delivered per beat, and his blood pressure (which can be regarded as the average pressure of blood delivered by the heart) is 15000 PA ① The average power of this person's heart beating ② How high does this person's heart work in a day equal to lifting a one ton object? Our teacher said that this problem should be constantly publicized and deformed. If I change to power P = pressure PSV, I won't be able to do so. It's troublesome for experts to give advice,
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16. The Palace Museum, summer palace and Yuanmingyuan
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