Answer:
40-18 = 22
Explanation:
The mass number is the sum of the neutrons and protons. You know you have 18 protons and a mass number of 40.
Answer:
Almost immediately after injection, you find yourself swept into a good-sized chamber, the left atrium. However, you do not stop in this chamber, but continue to plunge downward into a larger chamber below. You land with a large splash and examine your surroundings. All about you are huge white cords, hanging limply from two flaps of endothelial tissue far above you. You report that you are sitting in the left ventricle chamber of the heart, seeing the flaps of the mitral valve above you. The valve is open and its anchoring cords, the chordae tendineae, are lax. Since this valve is open, you conclude that the heart is in the systole/contraction phase of the cardiac cycle.
Explanation:
Once the oxygenated blood enters the heart through the pulmonary vein, it goes to the left atrium. From there, it goes down to the left ventricle passing through the mitral valve, also known as the bicuspid valve. This valve prevents blood's backflow when the heart contracts, allowing the blood's flow from the ventricle to the aorta.
The chordae tendineae, also known as tendinous cords, are in the mitral and the tricuspid valve. They are cords that are attached to the valve and the heart walls. They are lax during atrial systole, and with the help of blood pressure, they allow the valve to open and welcome the blood into the left ventricle. The tendinous cords are tense during ventricle systole preventing the valve from opening and causing a backflow from the ventricle to the atrium.
All other cells in the body are called Somatic cells.
What are germ cells?
The founding cells of all sexually reproducing organisms are known as germ cells. They are separated from the embryo's other somatic cells during development. Germ cells grow at the edge of the embryo proper in many animals before moving through a number of developing somatic tissues on their way to the developing gonad.
What are somatic cells ?
Any cell in the body that is not a gamete (egg or sperm), a germ cell (cell that develops into a gamete), or a stem cell is referred to as a somatic cell. Somatic cells are essentially any cells that make up an organism's body and are not directly utilised to create a new creature during reproduction.
To learn more about gametes click on the link below:
brainly.com/question/12793631
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Well, Herbert Spencer was the first one who write about the theory of Evolution (Before it was popularized by Charles Darwin, Herbert spencer is the one that theorized survival of the fittest)
hope this helps
The answer is through facilitated diffusion. It is then called as the transport of substances in a biological membrane from a higher concentration to a lower concentration area though carrier proteins. Hope this is the right answer and would be of help.
