Chapter 4 Flashcards
Histology
The study of tissue
Tissue
Groups of cells of similar structure and common function
All tissues are composed of
Cells, ground substances, and fiber
Ground substances and fibers are collectively called
Extra cellular matrix
Four types of primary tissues
Epithelial tissue
Connective tissue
Nervous tissue
Muscle tissue
Epithelial tissue
Covers body surfaces or lines a body cavity
Connective tissue
Connects, binds, and supports
Nervous tissue
Controls body functions, initiates and transmits impulses
Muscle tissue
Contracts to produce movement
Epithelial tissue: simple
Single layer of cells
Epithelial tissue: stratified
Two or more layers of cells
Epithelial tissue: pseudostratifed
Single layer of different cells
Epithelial tissue: squamous
Flat, scale like cell with flattened nucleus
Epithelial tissue: cuboidal
Boxlike cell with round nucleus
Columnar
Tall, column shaped cell with elongated nucleus near base
All epithelial tissue rest on
Basement membrane
Where can this be found: simple squarmos
Lungs, lining blood vessels, kidney
Where can this be found: simple cuboidal
Kidney, tubules
Simple columnar
Lining of small intestine
Where can this be found: pseudostratified columnar
Lining of trachea
Stratified squarmos keratinized
Epidermis if skin
Stratified squarmos nonkeratinized
Esophagus, mouth
Where can this be found: Transitional epithelium
Lining of bladder
Gland
One or more cells that make and secrete a fluid called secretion
Endocrine
Glands that have no duct and secrete hormones directly into blood
Exocrine
Glands that secrete by way if duct to body surface or body cavity
2 types of unicellular glands that secrete mucus
Mucus cells and goblet cells
Connective tissue is made up of
Extra cellular matrix
Three types of connective tissue
Collagen fibers
Elastic fibers
Reticular fibers
Collagen fibers
Give tensile strength (stretch)
Elastic fibers
allow stretch and recoil
Reticular fibers
Form supportive networks around blood vessels and other structures
Four main classes of connective tissue
Connective tissue proper
Cartilage
Bone
Blood
2 kinda of connective tissue proper
Loose and dense connective tissue
Loose connective tissue
Areolar CT
Adipose tissue
Reticular CT
Areolar CT locations
Under epithelial, wraps organs
Adipose tissue locations
Under skin, around organs
Reticular CT locations
Spleen, lymph nodes
Areolar CT cell type
Fibroblast
Adipose tissue cell type
Adipocytes
Reticular CT cell type
Reticular cells
Dense connective tissue
Dense regular CT
Dense irregular CT
Elastic CT
Dense regular CT location
Tendon, ligament
Dense irregular CT location
Dermis, joint capsule
Elastic CT location
Aorta (walls of large arteries)
Dense regular CT cell type
Fibroblast
Dense irregular CT cell type
Fibroblast
Elastic CT cell type
Elastic fibers
Cartilage
Tough and flexible, lacks nerves, 80% water
All cartilage
Hyaline cartilage
Elastic cartilage
Fibro cartilage
Hyaline cartilage location
Trachea
Elastic cartilage location
Flexible skeleton of ear
Fibro cartilage location
Intervertebral discs, meniscus
Hyaline cartilage cell type
Chondrocytes
Elastic cartilage cell type
Chondrocytes
Fibro cartilage
Chondrocytes
Compact bone cell type
Osteocytes, osteoblasts
Blood matrix
Liquid plasma
Blood cell type
RBCs WBCs platelets
Skeletal muscle nervous control
Voluntary
Cardiac muscle nervous control
Involuntary
Smooth muscle tissue locations
Wall of hollow organs, intestines, blood vessels
Smooth muscle tissue nervous control
Involuntary
Two types of nervous tissue
Neurons
Nuerolgicx
Neurons
Generate and conduct nerve impulses
Nuerolgic
Support, insulate, and protect neurons
3 membranes
Cutaneous membrane
Mucous membrane
Serous membrane
Cutaneous membrane
Largest membrane of the body, covers body surface, dry membrane
Mucous membrane
Line body cavities that are open to exterior; moist membranes
Serous membrane
Line body cavities that are closed to exterior and outer surface of some organs
Cutaneous membrane example
Skin
Mucous membrane example
Respiratory, digestive tracts
Serous membrane examples
Pericardium, pleura, peritoneumfunction
Cutaneous membrane function
Protects body
Mucous membrane function
Secrete lubricating mucus
Serous membrane function
Serous fluid to reduce friction
Parietal serosae
Lines internal body cavity walls
Visceral serosae
Covers internal organs
Tissue repair: regeneration
Replaced by original kind of tissue
Original function restored
Tissue repair: fibrosis
Replaced by connective tissue (scars)
Original function lost