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The circulatory system consists of the heart, blood vessels and blood. Blood vessels encompasses arteries, arterioles, veins and capillaries. All these parts play a major role in the normal functioning of the circulatory or cardiovascular system. The basic structure of the circulatory system can be considered as a closed loop that starts and finishes at the heart. For better understanding of the circulatory system, let's first discuss about the heart.
Heart: The human heart is divided into four chambers - left atrium, left ventricle, right atrium and right ventricle. The ventricle walls are thicker and stronger as compared to the atria walls. The right atrium is the upper and right chamber that receives deoxygenated blood via the superior vena cava (for upper body) and inferior vena cava (for lower body). The left atrium collects the oxygenated blood from the pulmonary veins and is pumped into the aorta (biggest artery of the heart), to be distributed to arteries and arterioles.
How does the Circulatory System Work
The main function of the circulatory system is to provide nutrients and oxygen to the various parts of the body, via the blood, which is circulated through the veins and arteries. Arteries carry the oxygenated blood from the heart to the cells and tissues, whereas veins return the oxygen-depleted blood from the cells to the heart. The circulatory system can be classified into the following two categories:
The Systemic Circulation: The systemic circulation is a loop from the heart to the various parts of the body, which works in contrast to the pulmonary circulation. In the systemic circulation, arteries collect the oxygen-rich blood from the heart and is transported to the body tissues. In the process, oxygen from the blood is diffused into the body cells; whereas carbon dioxide from the cells is diffused in the blood. This exchange of gases takes place with the help of capillaries that surround the body cells.
The Pulmonary Circulation: In the circulatory system, the pulmonary circulation is a loop from the heart to the lungs. It is that portion, where deoxygenated blood from the heart is carried to the lungs and in turn, returns oxygenated blood to the heart. The oxygen-depleted blood leaves the heart (right ventricle) through the two pulmonary arteries and moves into the lungs. In the lungs, respiration takes place in which the red blood cells (RBCs) release carbon dioxide and absorbs oxygen. Oxygenated blood from the lungs is then carried back to the heart (left atrium) with the help of pulmonary veins. The systemic circulation distributes this oxygen-rich blood to the body parts.
A cardiac cycle is defined as one complete heart beat, which comprises two phases - systole and diastole. In the former case, contraction of ventricles takes place to pump blood for pulmonary and systemic circulation; whereas, the ventricles relax and blood is filled in the atria in diastole phase. Any disorder in the heart and blood vessels can cause Heart disease such as heart attacks and hypertension.
The circulatory system works in association with the other systems of the body. For example, the circulatory system works in coordination with the respiratory system and digestive system to supply oxygen and nutrients to the body. Blood carries the messenger chemicals - hormones, secreted by the organs of the endocrine system. Thus, the circulatory system is also responsible for circulating hormones for proper communication between the body organs.
What else can I help you with?
Where does the origin of lysosomes take place?
from Golgi body
When does respiration take place in humans?
Respiration, the breathing in of air with oxygen and exhaling air with carbon dioxide, is always taking place except when a person is holding their breath. Cellular respiration, the conversion of nutrients to energy to sustain life, is always taking place in the human body as long as their is food available and the body is alive.
In what structure of the human female body does fertilization most often take place?
Fertilization in the human female body most often occurs in the fallopian tubes. After ovulation, the egg is released into the tube, where it can meet sperm that have traveled from the uterus. This location is optimal for the sperm to fertilize the egg before it moves to the uterus for implantation.
What are four ways that a human body gets rid of indigestible food?
the means of elimination is in the form of sweat,urine, and exreta. in case of indigestion omitting,dehydration, loose motions,and excessive sweating will take place.
What are the organs of circulation?
they are the arteries, which are rich in oxygen,veins which is rich in carbon dioxide, capillaries, which the body takes in oxygen and such from blood , heart which ensures the blood is always flowing, and the lungs which take in oxygen and release co2
Where does most nutrient absorption take place in the human body?
Most nutrient absorption in the human body takes place in the small intestine.
Where does fertilization take place in human body?
fertilisation takes place in fallopian tube
How does circulation of materials take place in a cow?
By the circulatory system, using the heart as a means to pump blood through out the body.
How does circulation of materials take place in jellyfish?
a jellyfish has a hole in the middle of its body and the tentacles go inside that hole and it gets fertilised
Is vitamin e responsible for chemical reaction that take place in the human body?
yes
How does the exchange of gases take place in the human body?
Gases takes place by nasal passage go to lungs to purifi.
Does most body process take place in water?
Yes, the majority of body processes occur in water. The reason is that the human body is composed of 65% water.
Can adderall cause poor circulation in body?
Yes it can. No matter what mg you take.
What would happen if osmosis didn't take place in the human body?
If osmosis didn't take place in the human body, cells wouldn't be able to regulate their water balance, leading to dehydration or overhydration. This could disrupt cellular functions and ultimately result in organ failure. Osmosis is essential for maintaining proper hydration levels and overall cell health in the body.
How long does it take for bananas to digest in the human body?
Bananas typically take about 2-3 hours to digest in the human body.
Why was lord born of earth?
Jesus was born into a human body, so that he could take our place on the cross as He sacrificed himself for our salvation.
Chemical reactions in the body take place in what nutrient?
Chemical reactions in the body take place in water.
