| Question | Answer |
| 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 |
