Anatomy - The Cell
- 6 years ago
In this video you can quickly and easily learn everything you need to know about the basic animal cell. \r
The individual cell is the unit of structure of all living things. An entire organism may consist of a single cell which is called Unicellular or many cells which is called Multicellular.\r
In human beings and other multicellular organisms, the cells tend to be organized in specific ways. A group of like cells performing a particular function is referred to as a Tissue. An organ is a discrete structure composed of several different tissues together. Organ = several different tissues together. An organ system is a group of organs together performing an overall function. Ie. integumentary, muscular, skeletal, nervous,circulatory, lymphatic, respiratory, endocrine, urinary/excretory, reproductive and digestive The individual organism is the combination of all of these things as a discrete and separate entity. THE MAJOR COMPONENTS OF A TYPICAL ANIMAL CELL. Cell Membrane. The cell membrane surrounds and separates the cell from its environment. The cell membrane allows certain material to pass through it as they enter or leave the cell. Nucleus, Within the cell is the nucleus. The nucleus plays a central role in the cell. Information is stored in the nucleus and distributed to guide the life processes and functions of the cell. Within the nucleus is the chromatin material, made up of a protein DNA. At the time of cell division, this chromatin material is aggregated into individual structures known as chromosomes. Each chromosome has a set of specific genes, basic unit of heredity which are passed from parents to their children, which determine all of the physical and chemical chareristics of the body, which represent its structure and function. The nucleus also contains a nucleolus which is a structure that creates ribosomes. Ribosomes – are granular particles which make protein, they are known as the “protein fories” in the cell. They are composed mainly of nucleic acids which help make the protein needed for many cell functions. They can float freely in the cell or attach to the endoplasmic reticulum. Protoplasm, The major substance of the cell is known as protoplasm. It is a combination of water and a variety of materials dissolved in the water. Outside the cell nucleus, protoplasm is called Cytoplasm. Inside the cell nucleus, protoplasm is called Nucleoplasm. Organelles, Within the cytoplasm, certain structures are called organelles, organelles means Little Organs. These little organs have unique jobs to perform. These organelles include structures such as the: Endoplasmic Reticulum, Various kinds of Vacuoles, Golgi Apparatus, Mitochondria and Centrioles
The individual cell is the unit of structure of all living things. An entire organism may consist of a single cell which is called Unicellular or many cells which is called Multicellular.\r
In human beings and other multicellular organisms, the cells tend to be organized in specific ways. A group of like cells performing a particular function is referred to as a Tissue. An organ is a discrete structure composed of several different tissues together. Organ = several different tissues together. An organ system is a group of organs together performing an overall function. Ie. integumentary, muscular, skeletal, nervous,circulatory, lymphatic, respiratory, endocrine, urinary/excretory, reproductive and digestive The individual organism is the combination of all of these things as a discrete and separate entity. THE MAJOR COMPONENTS OF A TYPICAL ANIMAL CELL. Cell Membrane. The cell membrane surrounds and separates the cell from its environment. The cell membrane allows certain material to pass through it as they enter or leave the cell. Nucleus, Within the cell is the nucleus. The nucleus plays a central role in the cell. Information is stored in the nucleus and distributed to guide the life processes and functions of the cell. Within the nucleus is the chromatin material, made up of a protein DNA. At the time of cell division, this chromatin material is aggregated into individual structures known as chromosomes. Each chromosome has a set of specific genes, basic unit of heredity which are passed from parents to their children, which determine all of the physical and chemical chareristics of the body, which represent its structure and function. The nucleus also contains a nucleolus which is a structure that creates ribosomes. Ribosomes – are granular particles which make protein, they are known as the “protein fories” in the cell. They are composed mainly of nucleic acids which help make the protein needed for many cell functions. They can float freely in the cell or attach to the endoplasmic reticulum. Protoplasm, The major substance of the cell is known as protoplasm. It is a combination of water and a variety of materials dissolved in the water. Outside the cell nucleus, protoplasm is called Cytoplasm. Inside the cell nucleus, protoplasm is called Nucleoplasm. Organelles, Within the cytoplasm, certain structures are called organelles, organelles means Little Organs. These little organs have unique jobs to perform. These organelles include structures such as the: Endoplasmic Reticulum, Various kinds of Vacuoles, Golgi Apparatus, Mitochondria and Centrioles