ANATOMY & PHYSIOLOGY
The Human Body's Cells
Cells are the most fundamental units of life in the body, and each cell has a distinct role.
Nerve cells send electrical signals throughout the body.
White blood cells attack invading microorganisms.
Specialized cells in the kidney (such as renal glomerulus parietal cells), brain (such as
astrocytes), stomach (such as parietal cells), and muscles (such as red and white skeletal
muscle fibers) are examples of other cells.
Cells form tissues, and diverse tissues work together to build organs. Levels of
organization refer to the arrangement of cells and tissues.
Flatworms and humans are examples of complex multicellular organisms with varying levels of
organization. The stages of the human body begin with cells and end with the entire organism.
Flatworms contain degrees of structure spanning from cells to the complete organism, despite the
fact that they lack specific circulatory and respiratory systems.
The function of a specialized cell.
Specialized cells are cells that are intended to perform a specific function in the body, such as red
blood cells, which are designed to transport oxygen. Depending on the specific task at hand,
nerve cells facilitate the contraction or relaxation of muscles.
The process of cell differentiation and which types of cells differentiate.
Differentiation is when an unspecialized cell, like an egg cell that has been fertilized, splits
many times to make specialized cells. During differentiation, some genes get switched on, or
"activated," while others get turned off, or "inactivated." The cell is in charge of this process. A
cell that has differentiated will make particular structures and perform certain things.
A cell that can change into any type of cell in the body is called "TOTIPOTENT." They have
the "total potential" to grow into any type of cell. Only the zygote and the first few cells of an
embryo are totipotent in a mammal.
PLURIPOTENT is a cell that can change into many, but not all, kinds of cells.
What are stem cells & types of stem cells.
Stem cells are unspecialized cells that can divide and give birth to various specialized cells.
Zygotes and Embryonic cells as well as the Cord blood stem cells are stem cell types.
The Human Body's Cells
Cells are the most fundamental units of life in the body, and each cell has a distinct role.
Nerve cells send electrical signals throughout the body.
White blood cells attack invading microorganisms.
Specialized cells in the kidney (such as renal glomerulus parietal cells), brain (such as
astrocytes), stomach (such as parietal cells), and muscles (such as red and white skeletal
muscle fibers) are examples of other cells.
Cells form tissues, and diverse tissues work together to build organs. Levels of
organization refer to the arrangement of cells and tissues.
Flatworms and humans are examples of complex multicellular organisms with varying levels of
organization. The stages of the human body begin with cells and end with the entire organism.
Flatworms contain degrees of structure spanning from cells to the complete organism, despite the
fact that they lack specific circulatory and respiratory systems.
The function of a specialized cell.
Specialized cells are cells that are intended to perform a specific function in the body, such as red
blood cells, which are designed to transport oxygen. Depending on the specific task at hand,
nerve cells facilitate the contraction or relaxation of muscles.
The process of cell differentiation and which types of cells differentiate.
Differentiation is when an unspecialized cell, like an egg cell that has been fertilized, splits
many times to make specialized cells. During differentiation, some genes get switched on, or
"activated," while others get turned off, or "inactivated." The cell is in charge of this process. A
cell that has differentiated will make particular structures and perform certain things.
A cell that can change into any type of cell in the body is called "TOTIPOTENT." They have
the "total potential" to grow into any type of cell. Only the zygote and the first few cells of an
embryo are totipotent in a mammal.
PLURIPOTENT is a cell that can change into many, but not all, kinds of cells.
What are stem cells & types of stem cells.
Stem cells are unspecialized cells that can divide and give birth to various specialized cells.
Zygotes and Embryonic cells as well as the Cord blood stem cells are stem cell types.
