2007-07-24 21:35:14 · 7 answers · asked by Pinky - 1 in Science & Mathematics ➔ Zoology
If it a cell with a single nucleus, an egg cell ( which measures about 1/10 of a mm in diameter) in the ovary could be the largest. Specialized cells in the body however can arise via the fusion of many cells into a huge cell with many nuclei just like the muscle fiber which is actually one very long and wide cell with many nuclei (about 1/10 of a mm wide and several centimeters long). Another thing is the outermost layer of the placenta which is made of one undivided sheet of cytoplasm containing thousands of cell nuclei that covers the entire surface of the membranes enclosing a developing baby. That would make living tissue enclosed within a single cell membrane extremely large in animals.
2007-07-24 22:27:56 · answer #1 · answered by ♥ lani s 7 · 0⤊ 0⤋
The answers indicating the the ostrich egg are the largest cells is correct if you're only considering mass. However, if you want to consider the physical size (length), there are lots of cells that are larger. For example, neurons that control the muscles of your diaphragm originate in your brain and end at the diaphragm (about the middle of your trunk). In a human, we're talking about a single cell that's around 2.5 feet long. Consider the homologous cells in a giraffe! Neurons that go into your big toe are even longer in humans than the ones that control the diaphragm. They have their origin in the spinal cord at about the level of you belt, and then end all the way down at the toe!
2007-07-25 20:23:41 · answer #2 · answered by rory_of_the_redwoods 2 · 1⤊ 0⤋
The largest animal cell in the modern world would be the ovum (egg) of an ostrich. It's larger than a computer mouse.
2007-07-25 08:05:46 · answer #3 · answered by morph_888 4 · 1⤊ 0⤋
The shape of the cell is tied to its function. The largeness is much variable one, in kind from 5 to 50 micron; in any case they exist of the exceptions, as an example the hen egg can have the diameter until 4 centimeters, 0,2 millimeters to be human, but the best it's the 85 millimeters of the ostrich!
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2007-07-24 21:53:39 · answer #4 · answered by rondone 7 · 1⤊ 0⤋
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The previous poster is half right. Cells come in all sorts of different kinds. For example, you have heart cells, blood cells, bone marrow cells, brain cells, nerve cells, skin cells, liver cells (and on and on and on) inside your body. Cells come in all sorts of different shapes and sizes. Cells are NOT all the same size. There are microscopic animals made up of prokaryotic cells, which are one tenth the size of our cells. And, in the human body, females carry eggs, which are enormous cells, and men carry sperm, which is tiny in comparison. The poster IS correct in saying that bigger organisms just have more cells, not bigger cells. Elephants have more cells than we do, we have more cells than a hummingbird, and a hummingbird has more cells than a beetle, and a beetle has more cells than an amoeba, which only has 1 cell. It has to do with how many cells an animal has, not how big their cells are.
2016-04-07 00:11:14 · answer #5 · answered by Anonymous · 0⤊ 0⤋
The ova (egg cell) is the largest animal cell, at least in mammals.
2007-07-24 21:39:43 · answer #6 · answered by Barb Outhere 7 · 0⤊ 0⤋
ostrich egg
2007-07-24 23:02:09 · answer #7 · answered by himmat 4 · 0⤊ 0⤋