Know About Specialized Cells In The Human Body And What They Do?
Feb 5,19You might be aware that the human body contains trillions of cells! A cell is known to be a functional unit which consists of a cell membrane, cytoplasm, mitochondria and endoplasmic reticulum. The main task of cells is to generate energy for the human body.
But, do all cells have the same function? Are there any specialised cells in our body that perform specific functions?
Definitely! It has been found that there are 200 types of specialised cells in the human body. You might study them if you pursue higher education in biology. But, today we’ll be discussing 6 such specialised cells present in the human body and their functions so that you can understand how amazing the human body is and get through your science assignments without any trouble.
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Nerve Cells
The very first type of specialised cells in the human body that you must know about is the nerve cell. A nerve cell or neuron is a special cell that sends and receives signals from the human brain and passes it to various parts of the body.
Nerve cells have a special structure which contains a tail-like structure called an axon that helps in quick transmission of the signal. They also contain thread-like structures called dendrites that spread out from the cell body to collect information from various parts of the human body.
It is estimated that a human being is born with 100 billion nerve cells. But, the nerve cells are never regenerated or reproduced. This means that they are never regenerated once they are dead.
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Red Blood Cells
Now let’s talk about special blood cells called RBC or Red Blood Cells or Erythrocytes. You must know that the blood carries food, nutrients and oxygen to all parts of the human body. Red blood cells are present in the blood and perform the function of carrying oxygen to different parts of the body.
Our science assignment help expert, Olivia, told us that red blood cells are given this name because they are red in colour as they contain a special substance called haemoglobin. It is a pigment that binds the oxygen with the blood so that it can travel across our body and reach the various body parts.
A red blood cell has a lifespan of 120 days. Red blood cells do not have a nucleus so that they can carry more oxygen.
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White Blood Cells
The next type of specialised cells is WBC or White Blood Cells or Leucocytes. They are the warriors of the human body as they are responsible for our immunity. White blood cells have three different types where each type performs a different function.
There are Granulocytes that fight infections from fungi and parasites. The Lymphocytes make our immune system and fight foreign substances that enter the body. The Monocytes remove the dying cells from our body along with foreign organisms.
Though white blood cells perform such an important function for our body yet they consist of less than 1% of the blood.
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Muscle Cells
Do you know what binds our body parts together? There are specialised cells in the human body called muscle cells. These cells are joined together like bundles. Muscle cells are of three types, namely Cardiac muscle cells, Skeletal muscle cells and Smooth muscle cells.
Cardiac muscle cells are located in the human heart. They perform rhythmic contractions so that the heart can pump the blood to all the parts of the body. These cells never get tired and work all the time!
Skeletal muscle cells are connected with the bones and are responsible for bending and movement of our joints.
Smooth muscle cells are present in various parts of the body such as the lining of the stomach, kidneys, lungs, blood vessels etc. These cells are like thin sheets of muscles. Many high school students take up muscle cells as their assignment topics to know more about the specialised cells in the human body and what they do.
Do you know that the heart muscles are the most hardworking muscles of the human body? The heart pumps around 2500 gallons of blood every day.
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Stem Cells
Are there any cells that help in the growth of the body? Yes, these are stem cells. They are special kind of cells that can grow into any other type of body cell. They, therefore, provide new cells to the body as any other cells get damaged or dead.
Stem cells are highly useful in research as they help in understanding what happens to the human cells during disease. They also help in understanding how tissue repair, organ transplantations can take place.
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Cancer Cells
Not all cells are useful for the human body. Some cells, if present in high amount can cause severe diseases and can be fatal. These are called cancer cells. These cells grow rapidly and cause tumours. These cells might get generated because of harmful radiations, chromosome malfunction, or even viruses.
Cancer cells are capable to overcome the programmed cell death which makes it more difficult to get rid of them. The World Health Organisations states that almost 30% of the cancer cases are preventable. For instance, smoking and tobacco are two major causes of cancer and thus it can be prevented by quitting these things. You can know more about cancer cells and their prevention from our PhD assignment writers. They are available 24X7 for your assistance.
Cancer cells can develop in any part of the human body. It has been found that there are more than 100 types of cancer cells!
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