Structure of heart and excretory system explain in simple language
Structure of heart and excretory system explain in simple language
HUMAN HEART
The human heart has
four chambers, the right atrium, the right ventricle, the left atrium and the left ventricle. The right and left sides are completely seperated by the septum, this is so that the oxgenated blood and deoxygenated blood are kept seprate and are not able to mix, allowing for maximum oxygenation. The left side carries oxygenated blood and the right side carries deoxygenated blood. There are four sets of valves, two sets of semi-lunar valves, one set between the right ventricle and the pulmonary artery and the other set between the left ventricle and the aorta. There are also two sets of atrioventricular (AV) valves, one set between the right atrium and the right ventricle, which is called the tricuspid valve, the other set of AV valves are between the left atrium and the left ventricle, which is called the bicuspid valve. The valves in the heart are required to prevent backflow of the blood. The ventricle walls are thicker than those of the atria because the ventricles have to pump blood out of the heart to different parts of the body so require more strength to do this, where as the atria only have to pump blood into the ventricles. The left ventricle wall is thicker than the right ventricle wall because the left ventricle has to pump blood to the whole body, where as the right ventricle only pumps blood to the lungs, which is a shorter distance.
HUMAN EXCRETORY SYSTEM For the maintenance of homeostasis and the prevention of damage to the body, you have a passive biological mechanism, called human excretory system that serves to remove unnecessary, waste and excess materials from the body. The unnecessary materials primarily consist of the waste products of metabolism, but also include other liquid and gaseous wastes, such as urine, sweat and respiratory gases (CO2). Your entire body depends on the optimum performance of this system as the healthy functioning of most organs involves the production of metabolic and other waste substances that need to be eliminated. It is important to note that all the waste producing organs are included in the excretory system definition, but here you need to consider only those specific organs that are concerned with the collection and excretion of useless products.
For the proper understanding of “What is excretory system?” you need to study its structures and their functions. The primary organs of the excretory system are three in number, namely, kidneys, lungs and skin, but certain other body structures are also associated with it that are considered as integral parts of this system, such as the liver, eccrine glands, large intestine, ureter, urethra, urinary bladder etc.
The vital importance of this advanced and complex excretory system of human body can be realized from the simple fact that it removes poisons and other life-threatening substances from your body. For example, somebody tells you that there is a poison present somewhere in your home, but you don't know where it actually is. You will, definitely, try to find it out and remove it as soon as possible, or else not only your life but also the survival of your family members will be at risk. Consequently, you will try to device a proficient system that will find, identify and ultimately remove any unnecessary, dangerous, waste and unwanted substances from your home that will be termed as an excretory system. For the accomplishment of the same task, your body also contains an extended network of canals and smaller tubes that are collectively termed as human excretory system.
- Parts of EXCRETORY system
Though there are many essential organs or parts of excretory system, the most basic ones are just three, namely, lungs, kidneys and skin. Some other accessory parts and component organs include gall bladder, liver, eccrine glands, urinary bladder, large intestine...
The human heart has
four chambers, the right atrium, the right ventricle, the left atrium and the left ventricle. The right and left sides are completely seperated by the septum, this is so that the oxgenated blood and deoxygenated blood are kept seprate and are not able to mix, allowing for maximum oxygenation. The left side carries oxygenated blood and the right side carries deoxygenated blood. There are four sets of valves, two sets of semi-lunar valves, one set between the right ventricle and the pulmonary artery and the other set between the left ventricle and the aorta. There are also two sets of atrioventricular (AV) valves, one set between the right atrium and the right ventricle, which is called the tricuspid valve, the other set of AV valves are between the left atrium and the left ventricle, which is called the bicuspid valve. The valves in the heart are required to prevent backflow of the blood. The ventricle walls are thicker than those of the atria because the ventricles have to pump blood out of the heart to different parts of the body so require more strength to do this, where as the atria only have to pump blood into the ventricles. The left ventricle wall is thicker than the right ventricle wall because the left ventricle has to pump blood to the whole body, where as the right ventricle only pumps blood to the lungs, which is a shorter distance.
HUMAN EXCRETORY SYSTEM
For the maintenance of homeostasis and the prevention of damage to the body, you have a passive biological mechanism, called human excretory system that serves to remove unnecessary, waste and excess materials from the body. The unnecessary materials primarily consist of the waste products of metabolism, but also include other liquid and gaseous wastes, such as urine, sweat and respiratory gases (CO2). Your entire body depends on the optimum performance of this system as the healthy functioning of most organs involves the production of metabolic and other waste substances that need to be eliminated. It is important to note that all the waste producing organs are included in the excretory system definition, but here you need to consider only those specific organs that are concerned with the collection and excretion of useless products.
For the proper understanding of “What is excretory system?” you need to study its structures and their functions. The primary organs of the excretory system are three in number, namely, kidneys, lungs and skin, but certain other body structures are also associated with it that are considered as integral parts of this system, such as the liver, eccrine glands, large intestine, ureter, urethra, urinary bladder etc.
The vital importance of this advanced and complex excretory system of human body can be realized from the simple fact that it removes poisons and other life-threatening substances from your body. For example, somebody tells you that there is a poison present somewhere in your home, but you don't know where it actually is. You will, definitely, try to find it out and remove it as soon as possible, or else not only your life but also the survival of your family members will be at risk. Consequently, you will try to device a proficient system that will find, identify and ultimately remove any unnecessary, dangerous, waste and unwanted substances from your home that will be termed as an excretory system. For the accomplishment of the same task, your body also contains an extended network of canals and smaller tubes that are collectively termed as human excretory system.
- Parts of EXCRETORY system
Though there are many essential organs or parts of excretory system, the most basic ones are just three, namely, lungs, kidneys and skin. Some other accessory parts and component organs include gall bladder, liver, eccrine glands, urinary bladder, large intestine...
