Complete answer: Neuron also known as a nerve cell is a cell that is the longest cell of animals which has the capability to get excited by electrical or chemical impulse.
What cell is the longest cell?
The longest cell is the nerve cell.
What is the longest nerve cell in animals?
The giant axon of the squid is the largest known nerve cell in the animal kingdom. They can be up to 1mm in diameter and almost a metre long.
Which is the largest cell in animal kingdom?
The largest cell in the animal kingdom is that of the Ostrich egg.
What is the oldest cell in the human body?
The oldest cell in your body is probably in your brain — your cerebral cortex. Researchers think these cells are with you from birth (although some can regenerate, more on this later). The youngest cell in your body at any given time is probably a neutophil, which is a type of white blood cell.
Which cell is the smallest cell?
Answer:
- The Cerebellum’s Granule Cell is the smallest cell in the human body that is between 4 micrometers to 4.5 micrometers long.
- The RBC ‘s size also found roughly 5 micrometers.
- Most scientists suggest that sperm is the smallest cell in terms of volume.
Which animal cell is long and branched?
nerve cells are branched in animals like humans. An animal cell which has a branched structure is nerve cell also known as neuron.
What animal has the most neurons?
The largest number of cortical neurons in non-primate mammals is found in the false killer whale with 10 500 million and the African elephant with 11 000 million, which is less than the number found in humans, despite the much larger brains of the former two.
How long is the longest axon in the human body?
The longest neuron in the human body has a single threadlike projection (the axon), a few micrometers in diameter, that reaches from the base of the spine to the foot, a distance of up to one meter.” For axon length of over a meter see Cavanagh (1984, PMID 6144984 p.
Who discovered cell?
Initially discovered by Robert Hooke in 1665, the cell has a rich and interesting history that has ultimately given way to many of today’s scientific advancements.
What is the smallest cell in animal?
The smallest cell is Mycoplasma gallicepticum. It is about 10 micrometer in size.
What cell has the shortest lifespan?
Probably neutrophils (granulocytes) have the shortest lifespan of human cells, 4 hours or less. Neutrophils make up about 55–70% of our white blood cells. They are the part of our white blood cells that fight bacterial infections.
Does blood change every 7 years?
Red blood cells live for about four months, while white blood cells live on average more than a year. … There’s nothing special or significant about a seven-year cycle, since cells are dying and being replaced all the time.
Do your cells die every 7 years?
Your cells are constantly dying, but they’re being replaced with new, fresh cells. … The average age of a cell is 7 years… but that doesn’t mean that every cell is replaced in 7 years. Some cells, in fact, never get replaced at all, remaining with us from birth until death.