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A heartbeat has two parts the first part in the flow of the blood into the heart. The second part is the flow of the blood out of the heart. That is why heart beat is a bub-bub sound.
Wiki User
∙ 10y ago
Wiki User
∙ 15y agoThe first sound of the heartbeat is the lup. It is produced when the bicuspid and tricuspid valves open to let the blood from the auricles enter the ventricles.
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Describe what happens during the first stage of the cell cycle in a eukaryotic cell.?
Nothing
What occurs during the first stage of respiration?
Glycolysis occurs in the cytoplasm during the first stage of respiration.
Is duplication of paired chromosomes in the first stage of meiosis?
Yes duplication of chromosomes occurs during the first stage of meiosis or during prophase.
What happens during the neurula stage?
The neurula stage is the stage of development of the nervous system of vertebrates. In a human fetus, if there are some failure in the development of the nervous system during the neurula stage, some serious birth defects could occur.
What happens during the S phrase?
During the S stage DNA synthesis occurs. (copying of the DNA)
What happens during the first stage of respiration?
you obsorve air
What happens during the first stage of the menstrual cycle?
menstruation
Describe what happens during the first stage of the cell cycle in a eukaryotic cell?
Nothing
Describe what happens during the first stage of the cell cycle in a eukaryotic cell.?
Nothing
What happens during germinal stage and how long does it last?
its the first stage of pregnancy and last the first 3 months..
What happens during the output stage of a computer system what happens during the processing stage of a computer system?
basically, the rubbish data comes out.
What occurs during the first stage of respiration?
Glycolysis occurs in the cytoplasm during the first stage of respiration.
What happens during the first stage of the cell cycle in a eukaryotic cell?
In the first stage, called interphase, the cell grows and copies its organelles and chromosomes. After each chromosomes is duplicated, the two copies are called chromatids.
What happens during the morula stage of human development?
Blastula
What happens during the fruiting stage of the plant?
it just grown
What happens to the cervix during the first stage of labor?
Answer: During the first stage of labor, the cervix will start to thin out (also called efface) and open up (also called dilate). The first stage of labor can take a couple of hours or a couple of weeks (I was in my first stage of labor with my daughter for 2 weeks). Most women usually stay at home during this stage as it is not the "active" stage of labor. The active stage of labor is stage 2. During this stage your cervix will continue to efface and dilate at a much more rapid pace. This ends with the birth of your baby. Then comes stage 3, also know as the after-birth stage. This is when you push out the placenta, which is what protected the baby for 9 months and held the fluids.
What happens in the first stage of cellular respiration?
Hippies ;)
