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Feb 16, 2021 · The cell is the basic structural unit of all living organisms. Most of the cells forming the human body share the basic components, but there are many categories that have specific light and electron microscopic characteristics. This review shed a light on these cell categories and their morphologies.
- Hany K. K. Mostafa
- Apr-Jun 2022
- 10.4103/jmau.jmau_74_20
- Regina Bailey
- Stem Cells. Stem cells are unique in that they originate as unspecialized cells and have the ability to develop into specialized cells that can be used to build specific organs or tissues.
- Bone Cells. Bones are a type of mineralized connective tissue that comprise a major component of the skeletal system. Bones are made up of a matrix of collagen and calcium phosphate minerals.
- Blood Cells. From transporting oxygen throughout the body to fighting infection, blood cell activity is vital to life. Blood cells are produced by bone marrow.
- Muscle Cells. Muscle cells form muscle tissue, which enables all bodily movement. The three types of muscle cells are skeletal, cardiac, and smooth. Skeletal muscle tissue attaches to bones to facilitates voluntary movement.
Anthropophagy. Consumption of human flesh has occurred on all continents over the ages, yet never in a systematic or continuous manner. It declined from the third millennium BCE, with the emergence of the great civilisations of Mesopotamia, Egypt and the Indus valley.
Jul 28, 2023 · Many human cells have the primary job of producing and secreting a particular substance, such as a hormone or an enzyme. For example, special cells in the pancreas produce and secrete the hormone insulin, which regulates the level of glucose in the blood.
- Stem cells. Before a cell becomes specialised, it first starts out as a stem cell. The unique feature of stem cells is that they are pluripotent - they have the potential to become any type of cell in the body.
- Red blood cells. Erythrocyte. Erythrocytus. 1/2. Synonyms: Red blood cell, Erythrocyti. Red blood cells are known as erythrocytes, and are the most common type of blood cell.
- White blood cells. White blood cells, also known as leukocytes, are a vital component of the immune system. There are five different types, which fall under two main categories; granulocytes and agranulocytes.
- Platelets. Just like the white and red blood cells, platelets also form an important component of the blood. Technically platelets are fragments of cells rather than true cells, but are vital in the control of bleeding.
Aug 14, 2020 · Different cells contain different amounts of different organelles depending on their function. For example, muscle cells contain many mitochondria while cells in the pancreas that make digestive enzymes contain many ribosomes and secretory vesicles.
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Describe the general characteristics of each of the following cell types and relate their characteristics to their functions: nerve cell, muscle cell, red blood cell (erythrocyte), and white blood cell (leukocyte).
