How the heart rate is kept within normal limits?
As blood is pumped out of the heart it first goes up into the biggest artery in the body called the aorta. It has nerves in it that measure blood pressure called baroreceptors. Then the blood goes up through the carotid arteries in the neck which have more baroreceptors and another kind that measures the carbon dioxide content in blood. These are called chemoreceptors. Both of these nerve receptors send their information to a part of the brain known as the medulla oblongata which has two regulatory regions called the cardio-acceleratory and the cardio-inhibitory centers. Both of these control mechanisms are linked to the sinoatrial node at the top of the right side of the heart. This is where the electrical impulse that starts every heart beat cycle is generated. If the heart needs to pump out more blood, or increase cardiac output, a message is sent to the senatorial node to make it accelerate and cause the heart beat faster. If it needs to slow down, or decrease cardiac output, a message is sent to inhibit the sinoatrial node which then makes the heart beat slower. As blood is pumped out of the heart it first goes up into the biggest artery in the body called the aorta. It has nerves in it that measure blood pressure called baroreceptors. Then the blood goes up through the carotid arteries in the neck which have more baroreceptors and another kind that measures the carbon dioxide content in blood. These are called chemoreceptors. Both of these nerve receptors send their information to a part of the brain known as the medulla oblongata which has two regulatory regions called the cardio-acceleratory and the cardio-inhibitory centers. Both of these control mechanisms are linked to the sinoatrial node at the top of the right side of the heart. This is where the electrical impulse that starts every heart beat cycle is generated. If the heart needs to pump out more blood, or increase cardiac output, a message is sent to the senatorial node to make it accelerate and cause the heart beat faster. If it needs to slow down, or decrease cardiac output, a message is sent to inhibit the sinoatrial node which then makes the heart beat slower.
What are the advantages of using enzymes in industry?
The main problem with enzymes is that they are very sensitive to their surroundings. For enzymes to function properly the temperature must be kept down (usually below 45oC). The pH also needs to be kept within carefully monitored limits which suit the enzyme. It costs money to control these conditions.ØEnzymes are very sensitive to their surroundings. For enzymes to function properly the temperature must be kept down (usually below 45oC). The pH also needs to…
What language was the word inordinate is borrowed from?
As with a number of words in European languages, it stems from Latin as 'inordinatus' meaning 'unordered' Two words are jointed together 'in' meaning 'not' and the past participle of 'ordinare'' meaning 'set in order'. Also used to mean 'excessive' when being translated as 'not being kept within orderly limits'
What does it mean to keep your heart with all diligence?
From the heart comes the issues of life. If the heart is wicked, so the thoughts, imaginations and deeds will be mixed with wickedness. When a person is saved, the Lord gives us a new heart, and it can be kept pure and clean in the eyes of God. It takes prayer, dedication and a devoted life to keep your heart. Remember, it is not that which goes into a person that defiles, but rather…
If the environment of the body cells is not kept constant within narrow limits what will happen to the cells?
Does anyone know the answer to this? I am looking and googling but can't find the answer. Help please anyone! The mechanisms of homeostasis are so ubiquitous, their patterns so subtly intertwined, that we are tempted to produce a teleological question, and ask why. What is so useful to the organism about this precision? We do not have to look far, because the workings of every cell in the body depend on the maintenance of…