Tissues Flashcards
Memorize each type of tissue
What are the 4 types of tissues?
Epithelial, connective, muscle, nerve
What is the organization of the body?
Atoms form molecules, which are organized into organelles, which are contained within cells, cells group together to form tissues, tissues form organs, which form organ systems, all organs form a human organism.
Where is epithelial tissue found and it’s functions?
Covers the body’s surface, lines cavities and organs, forms certain glands
Ita functions are protection, absorption, filtration, and secretion.
Where are membranes found and their functions?
They line body cavities, cover body surfaces, separate organs from other organs
Some membranes secrete lubrication to prevent friction
What is collagen?
The body’s most abundant protein. It forms ligaments, tendons, the matrix of bone and cartilage, and forms deep in the skin.
What is the key points of cartilage and the 3 types and were are they found?
Contains no blood vessels, receives nutrients and oxygen by diffusion from connective tissue around it. Causes it to heal slowly or not at all.
Made of cells called chondrocytes.
Rubbery and flexible matrix
Hyaline: most common and found in the ends of joints that move.
Elastic: provides support to the extern ear and epiglottis
Fibrocartilage: the strongest. Forms between vertebrae and the knee to withstand high pressure.
What is osseous tissue and its functions?
AKA bone, it’s made from cells called osteocytes embedded in a matrix of collagen fibers and mineral salts. The mineral salts make bone hard.
Bones provide structure, protection for organs, and support for the body
What is simple squamous epithelium?
A single layer of flat cells, which allows for ready diffusion or filtration, found in the alveoli and lining of blood and lymphatic vessels
What is simple cubodial epithelium?
Single layer of cube shaped cells that secrets and absorbs, found in ducts and tubules of many organs
What is simple columnar epithelium?
Single layer of columnar cells, absorbs and secretes, lines the intestines
What is Pseudostratified columnar epithelium?
Single layer of irregularly shaped columnar cells, provides protection and secretes mucous, lines the trachea and nasal mucosa
What is stratified squamous epithelium?
Multiple layers provide protection, found in the epidermis, esophagus, and vagina
What is transitional epithelium?
Multiple cell layers that can stretch and change shape, found in the urinary tract and the stretching allows for filling of urine
What is a serous membrane?
Lines closed body cavities and many organs
