Introduction to Cell Tissue and Organ
Title: Introduction to cell, tissues and organ
Objectives:
1. To study the different type, function, structure and histology of cell, tissue, and organs in human body.
2. To learn how to identify different cell and tissue based on their structure and shape.
3. To learn how to use the microscope properly to observe the slide of different cell and tissue.
Introduction:
Cell is the basic structural and functional units of an organism that are composed of chemicals. Cell is the smallest living unit in the human body. Cell is divided into three main parts which are the plasma membrane, cytoplasm, and nucleus. The plasma membrane forms the cell flexible outer surface, separating the cell’s internal environment(everything inside the cell) from the external environment(everything outside the cell). The cytoplasm consists of all the cellular contents between the plasma membrane and the nucleus. The nucleus is a large organelle that houses the most of a cell’s DNA (Tortora & Derrickson, 2011). Tissues are the group of cells and the materials surrounding them that work together to perform a particular function. There are four basic types of tissues in human body, which are the connective tissue, muscle tissue, epithelial tissue, and nervous tissue. Connective tissue connects, supports, and protects body organs while distributing blood vessels to other tissue. Muscular tissue contracts to make body parts move and generates heat. Epithelial tissue covers body surfaces, lines hollow organs and cavities, and forms glands. Nervous tissues carry information from one part of the body to another through nerve impulses. Organs are structures that are composed of two or more different type of tissues. Each of them has specific function and usually has recognizable shape. Epithelial tissue consists of cell arranged in continuous sheets, in either single or multiple layers. Simple epithelium is a single layer of cells. Pseudostratified epithelium appears to have multiple layers of
Objectives:
1. To study the different type, function, structure and histology of cell, tissue, and organs in human body.
2. To learn how to identify different cell and tissue based on their structure and shape.
3. To learn how to use the microscope properly to observe the slide of different cell and tissue.
Introduction:
Cell is the basic structural and functional units of an organism that are composed of chemicals. Cell is the smallest living unit in the human body. Cell is divided into three main parts which are the plasma membrane, cytoplasm, and nucleus. The plasma membrane forms the cell flexible outer surface, separating the cell’s internal environment(everything inside the cell) from the external environment(everything outside the cell). The cytoplasm consists of all the cellular contents between the plasma membrane and the nucleus. The nucleus is a large organelle that houses the most of a cell’s DNA (Tortora & Derrickson, 2011). Tissues are the group of cells and the materials surrounding them that work together to perform a particular function. There are four basic types of tissues in human body, which are the connective tissue, muscle tissue, epithelial tissue, and nervous tissue. Connective tissue connects, supports, and protects body organs while distributing blood vessels to other tissue. Muscular tissue contracts to make body parts move and generates heat. Epithelial tissue covers body surfaces, lines hollow organs and cavities, and forms glands. Nervous tissues carry information from one part of the body to another through nerve impulses. Organs are structures that are composed of two or more different type of tissues. Each of them has specific function and usually has recognizable shape. Epithelial tissue consists of cell arranged in continuous sheets, in either single or multiple layers. Simple epithelium is a single layer of cells. Pseudostratified epithelium appears to have multiple layers of