CELL ORGANIZATION AND TISSUES

• Approximately, how many cells are there inside the human body?

  37.2 Trillion and beyond
• What is the basic unit of life?

  Cell
• What is found in all cells and separates the interior of the cell from the outside environment?

  Cell Membrane
• Cell Membrane is also known as "Gateway to the Cell" or "Guardian of the Cell"
• What is the command center of the Cell?

  Nucleus
• Cytoplasm is the Cellular Matrix of the cell.
• What neuron has the specialization of being the "gateway to the perception"?

  Sensory Neuron
• What neuron has the specialization of being the "conductor of movement"?

  Motor Neuron
• What cell has the specialization of being the courier of oxygen?

  Red Blood Cells
• What cell specialization does white blood cells have?

  Guardian of Immunity (Immune System)
• What cell is called the "Architect of Fertility"?

  Sperm Cells
• What is the term for the specialization of Ovum cells?

  Cradle of Life
• Histology is the field of study that involves the microscopic examination of tissue appearance, organization, and function.
• Tissue Is used to describe a group of cells that are similar in structure and perform a specific function.
• 4 Categories of Tissue

  • Epithelial Tissue
  • Connective Tissue
  • Muscle Tissue
  • Nervous Tissue
• Epithelial Tissue refers to the group of cells that cover the exterior surfaces of the body, line internal cavities and passageways, and form certain glands.
• What membrane is composed of an epithelial layer attached to a layer of connective tissue?

  Epithelial Tissue Membrane
• Binds the cell movements and organs of the body together. What type of Tissue is this?

  Connective Tissue
• This type of membrane may be found encapsulating an organ, such as the kidney, or lining the capacity of a freely movable joint. What is this?

  Connective Tissue Membrane
• When lining a joint, this membrane is referred to as a synovial membrane, what is this?

  Connective Tissue Membrane
• Synovial Fluid is also known as a what?

  Natural Lubricant for the bones of a joint
• Muscle Tissue contracts forcefully when excited, providing movement.
• Examples of Muscle Tissues

  • Cardiac Muscle
  • Smooth Muscle
  • Skeletal Muscle
• Is also excitable, allowing for the generation and propagation of electrochemical signals in the form of nerve impulses that communicate between different regions of the body. What is this?

  Nervous Tissue
• Examples of Nervous Tissue

  • Brain
  • Spinal Cord
  • Nerves
• 1. The cells composing a tissue share a common embryonic origin. 
• The Zygote is a single cell formed by the fusion of an egg and sperm cell. After the fertilization, the zygote gives rise to many cells to form the embryo.
• Omnipotent is the first embryonic cell generated to have the ability to differentiate into any type of cell in the body.
• Germ layer: ectoderm (ecto means outer), mesoderm (meso means middle), and endoderm (endo means inner).
• Is a thin layer or sheet of cells that either covers the outside of the body, lines an internal body cavity, lines a vessel, or lines a movable joint cavity. What is this?

  Tissue Membrane
• Tissue Membrane is further classified into two broad categories, what are these respectively?

  Connective Tissue Membrane and Epithelial Tissue Membrane