Discover the Diversity of Cells: Types, Functions, and Shapes

Understanding the structure and functions of the cells is fundamental to understanding how living organisms work. They are the basic units of life that make up all living things. In this article, we will explore their different shapes of them, the functions they perform, and their types.

The Different Shapes of Cells

They have very different shapes based on the function they have to perform. For example, the cells that make up the muscles have a different shape compared to the red blood cells present in the blood.

Also, they may have a greater or lesser number of mitochondria, a more or less extensive endoplasmic reticulum, and a variable number of organelles that process nutrients based on their function.

Types and Functions of the Cells

They are of different types and perform various functions. The following are some examples:

Muscle Cells

They perform the function of contracting and can vary their length, allowing the movement of various body parts.

Red Blood Cells

They look like small flattened disks and are responsible for transporting oxygen to all the cells of the body.

Egg and Sperm Cells

Egg and sperm cells are the reproductive parts in female and male individuals, respectively.

Hair Cells

They cover the inside of many organs, for example, the trachea, the duct that carries air to the lungs.

Epithelial Cells

They form the external line of the surface of the body and internal organs. They serve as a protective barrier and can also absorb and secrete materials.


cellule nervose
cellule nervose

Neurons are responsible for carrying nerve impulses to different parts of the body. They are the building blocks of the Human Nervous System.

They have a large cell body that contains the nucleus and cell organelles.

Neurons have two types of long and narrow appendages: dendrites and axons. Dendrites are short and branched, while axons are thick and unbranched fibers.

Each neuron has only one axon, which can be very long. The axon is responsible for transmitting impulses from the neuron to others.

The Parts of Neurons

Each neuron has only one axon, which can be very long (up to 2 meters in large animals). The dendrites are short and branched, present in large numbers on each neuron. The axon is a thick and unbranched fiber, except in its terminal part. The function of neurons is to carry nerve impulses to all parts of the body.


In conclusion, the cell is an essential part of all living organisms, and understanding their functions is crucial for the study of biology. By exploring the different shapes, functions, and types, we can better understand how living organisms work.

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