histo lec FINALS

• histology- deals with study of normal tissues
• pathology- study of abnormal tissues
• abnormal tissues- tissues with altered structure and function of body, organs, tissues and cells
• tissues- are group of cells that have similar structure and intercellular materials interrelated to perform a specific function
• tussu- means weave fabric strands
• cells- the basic unit of life that composed all the living things
• mitosis- is the division of a cell into two daughter cells that are genetically identical to the parent cell
• meiosis- is the division of germ cells. It results in four daughter cells which are not identical to the parent cell only one copy of each paternal and maternal chromosome can be found in the daughter cells
• anton van leeuwenhoek- using his handheld miscroscope, was the first person to observe and describe living cells
• robert hooke- an english microscopist and physicist observed a slice of cork under a microscope and discovered many small compartments like honeycomb structures which he describe as cells.
• marcelo malpighi- 1st describe true units forming animal tissues using simple lenses
• marcelo malphigi- true father of histology
• anton van leeuwenhock - develop compound lenses 1st describe while examining rbc of salmon also discovered protozoa, bacteria, muscles, nerves, etc
• robert brown- development of cell theory
• marie francois bichat- termed tissues as textures
• matthias schleiden- proposed cell theory for plants
• theodor schwann- described animals are made of cells and discovered cells that form sheath surrounding nerve
• friedrich gustav jacob henle- published 1st human histology
• max schultze- 1st describe cells as mass of nucleated protoplasm
• rudolf virchow- describe human body as cell state
• 19th century- microtome, fixing, embedding and staining techniques
• cytology- the study of cells and their structure, function, and interactions with each other and with the environment
• histology- study of groups of similar cells for performance of specific functions
• organology- study of the group of tissues arranged in pattern of a particular organ
• Cells, Intercellular substances and body fluid-blood and lymphs- 3 elements that composed of human body
• cell membrane- plasma membrane or plasmalemma
• nucleus- contains genetic material and controls cell activities, controls cell division, controls cell growth and development
• cytoplasm- where chemical reactions take place, where the cell's energy is stored