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Tissue Groups of similar cells are organized into tissue
The study of tissue is Histology
4 major types of tissue Epithelial Connective Muscle Nervous
Function of Epithelial Protection Secretion Absorption Excretion
Connective tissue function Binds, supports, fills, stores fat, produces blood cells
Muscle tissue function Movement
Nervous tissue function Conducts impulsive
3 intercellular junctions Tight junction Desmosomes Gap junctions
Tight junction function and example Epithelial and close space between cell by fusing cell membranes Lines the small intestine
Desmosomes function and example Epithelial and binds cell by forming "spot welds" between cell membrane Outer skin layer
Gap junction function and example Form tubular channels between cell that allow exchange of substance Cardiac muscle
General info on epithelial tissue Covers organs and body surface Lines cavities and shallow organs Makes up glands Goes under mitosis A LOT and rapidly
Simple Squamos location and function Lungs ; diffusion and filtration
Simple cuboidal location and function Kidneys ; secretion and absorption
Simple columnar location and function Digestive tract (stomach, intestines) ; secretion and absorbtion
Pseudostratified columnar location and function Respiratory tract. ; protection Has cilia
Stratified squamous location and function Many layer in skin ; protection
Stratified custodial
Stratified columnar Protection ; lines male urethra
Transitional Urinary bladder ; protection Changes shapes
Glandular epithelial Compose of cells that produce and secrete substance into ducts or body fluid
2 types of glands Endocrine glands Exocrine glands
Endocrine glands Secrete into tissue fluid or blood
Excorine glands Secretes into ducts that open onto surface
2 structural types of exorine glands Unicellular Multicellular
Unicellular Compose of one cell. Such as goblet cell
goblet cell does what Secrete mucus
Multicellular Compose of many cells Example ; sweat and salivary gland Simple and compound
Epithelial tissue doesn't have bloood vessels which is A vascular
Connective tissue provides Nutrients to epithelial
Connective tissue is where? Under epithelial
Merocrine glands and location Secrete fluid by exocytosis Salivary and swat glands and pancreas
apocrine gland and location lose small part of cell during secretion Mammary and ceruminous glands (ear wax)
Holocrine gland and location Release entire cells filled with product Sebaceous gland
Connective tissue general info Most abundant tissue type Cells are farther apart then epithelial cells Stores fat Contains matrix betweeen cells
Matrix is Stuff around cell Ranges from liquid to solid Often has fibers presented
Most connective tissue has _____ blood supply Good/excellent
Major cell types of connective tissue Fibroblast cell Macrophages Master cell
Fibroblast Makes fibers into matrix
Macrophages Defense against infection
Master cell Promotes inflammation to promote healing
Major fibers in Connective tissue Collagen fibers Elastic (yellow) fibers Reticular fibers
Collagen fibers Very strong
Elastic fibers Stretchy
Reticular fibers Thins and branches In walls of spleen and liver
Areolar (loose) connective tissue Location Function Fibers Cell types Vascularity Fibroblast cells Under/in skin Binds and is filler Between muscle Good blood supply Fibers are Collagen
Adipose Location Function Fibers Cell types Vascularity Behind eyes / under skin Cushion, insulates, stores Adipocyte stores fat
Adipocytes Fat cells
Reticular connective tissue Location Function Fibers Cell types Vascularity Thin reticular fibers Supports walls of internal organs Walls of liver and spleen
Dense regular Worse blood supply Closely packed collagenous fibers Few blood vessels Tendons and ligaments Slow to heal
Dense irregular Fibers going in different directions Plenty of blood vessels Dermis of skin Fast healing
Dense elastic In walls of arteries Stretchy In aordia artery
Cartilage Flexible support Poor blood supply Has chondrocytes and lacunae surround matrix
Chondrocytes Cartilage cell
Lacunae Chambers (holes) in the cartilage
3 types of cartilage Hyaline Elastic Fibrocartilage
Hyaline Collagen fibers Ends of bones Flexible support
Elastic cartilage Outer ear More flexible support Elastic fibers
Fibrocartliage Between vertebrae Cartilage pads in knee Stronger support
Bone Has lacunae Support Skeletal Good active blood supply
Blood Liquid Transportation
Osteocytes Bone cell
Serous membranes Line closed body cavities Wet -> serous fluid Thin simple squamous and areolar
Mucous membranes Lines open body cavities Ex; mouth Wet -> mucus Epithelial and areolar
Cutaneous membranes Dry Stratified squamous Areolar and dense irregular
Synovial membranes Lines joint cavities Only connective tissue Wet -> synovial
Muscular tissues Skeletal Cardiac Smooth
Skeletal tissue Voluntary and moves body
Cardiac Involuntary and moves blood Heart
Smooth Involuntary and walls of hallow organs
Nervous Nerves brain spinal cord Transmits implusives
Created by: Kellifrench
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