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Specialised Cells Research - Group 3, The Study of Human Muscle Cells
The Structure of the Human Muscle Cell
Obviously comes from the muscle of the human, and have a unique structure compared to other cells.
There are various types of organelles found in the cell. Each having various types of functions. This gives the cells a unique function for the human body.
Let's talk about the organelles now.
Each muscle cell is covered by a plasma membrane sheath which is called the sarcolemma.
What is a sarcolemma? The sarcolemma is the cell membrane of a muscle cell. It consists of a true cell membrane, called the plasma membrane.
Tunnel-like extensions from the sarcolemma pass through the muscle fibre from one side of it to the other in transverse sections through the diameter of the fibre. These tunnel-like extensions are known as transverse tubules.
The nuclei of muscle cells are located at the edges of the diameter of the fibre, adjacent to the sarcolemma. A single muscle cell may have many nuclei. The cytoplasm in the muscle cell is called sarcoplasm.
There are many mitochondria present in the muscle cell
Sarcoplasmic reticulum is a network of membrane-enclosed tubules similar to smooth endoplasmic reticulum (SER). Sarcoplasmic reticulum is present in muscle fibres/cells and extends throughout the sarcoplasm of the cell. The function of the sarcoplasmic reticulum is to store calcium ions, which are necessary for muscle contraction.
As we conclude, the different organelles are important for the cell to carry out life processes for the cell.
Done by: Group 3
Images:http://www.frame.org.uk/dynamic_images/human_muscle_cells.jpg
Sources: http://www.ivy-rose.co.uk/HumanBody/Muscles/Muscle_Cell.php, en.wikipedia.org/wiki/Sarcolemma
I did not know that the muscle cell has a special type of cell membrane that has its own name, which is the sarcolemma.
ReplyDeleteP.S. Sorry Mr Loh. I couldn't comment last night because I had to attend a church service and I got back only around 11++ so I couldn't comment.
I didnt noe that the cell membrane has a name of it's own
ReplyDeleteAlthough I knew that there are myofibril in the muscle cell, I did not know that there are filament in the myofibril.
ReplyDeleteI didn't know a muscle cell has many nuclei.
ReplyDeleteI did not know how does the cross section of a muscle cell look like until I saw the picture above.
ReplyDeleteI did not know the muscle has many nuclei and that the function sarcoplasmic reticulum is to store calcium ions
ReplyDeletearcoplasmic reticulum is a network of membrane-enclosed tubules similar to smooth endoplasmic reticulum
ReplyDeleteI did not know that in the muscle cell, there was another name for the smooth endoplasmic reticulum
I did not know that the muscle has so many components.
ReplyDeleteI did not know that the muscle cell had so many nuclei and that the muscle cell has a special cell membrane that has its own name, sarcolemma.
ReplyDeleteI have learnt that ach muscle cell is covered by a plasma membrane sheath which is called the sarcolemma.
ReplyDeleteI have learnt that the muscle cells has many nuclei.
ReplyDeletei didi not know that it's own special cell membran
ReplyDeleteI did not know that human muscle is made up of speciallised cells which contain many myofibril, which make up the muscle.
ReplyDeleteDaniel
i learnt that a muscle cell contains so many cell parts and the functions of it which i didn't know off before
ReplyDeleteI finally know how the actual cell look like (in perspective) and I didnt know there was sarcolemma in it
ReplyDelete