The longest cells in the human body are neurons. Neurons are cells within the nervous system and carry messages throughout the body.Know More
Although they range in size, some neurons are 3 feet long. These include the neurons that go from the skin into the spinal cord and up into the brain stem. Their impressive length makes neurons the longest cells in the body. Neurons also hold the title of the longest living cells in the human body as well. While other cells in the body die and regenerate, many neurons remain the same throughout a person's lifetime.
Neurons serve a special purpose, sending signals from one part of the body to another. These messages, known as nerve impulses, are how the brain communicates. For example, if a person wants to run, neurons make it possible for the brain to tell the legs to move. However, not all neurons are created equally. There are five types in the body, each with its own specialty.Learn more about Cells
Buffer systems in the human body are composed of a weak acid or base, along with its conjugate acid or base. This system prevents large fluctuations in the body and cells' pH due to an addition of a strong acid or base.Full Answer >
All cells in the human body are diploid, except those used in sexual reproduction. Examples of diploid cells are blood, muscle and skin cells.Full Answer >
Cells look different because they all perform different functions in the body, and therefore are made up of different components. A brain cell, for example, performs differently than a muscle cell. Therefore, the proteins that make up the cells are different, giving each cell a unique appearance.Full Answer >
Specialized cells are cells that have gone on to specialize in being in a certain part of the body, such as a skin cell. These cells generally do not replicate and simply die after their life cycle is complete. Most of the human body's cells are specialized cells, such as muscle, skin and nerve cells.Full Answer >