Tissues Flashcards
a group of cells with a similar structure and function
Tissues
The study of tissues called
Histology
Four basic types of tissues
Epithelial
Connective
Muscle
Nervous
Found throughout the body where it covers internal and external surfaces.
Epithelial tissue
It also forms most of the glands.
Epithelial tissue
Epithelial cells with one surfac
Free surface
Not in contact with other cells.
Free surface
Attaches the epithelial cells into underlying tissues.
Basement tissues
Epethelial functions
- Protecting underlying structures
- Acting as barriers
- Permitting the passage of substances - Secreting substances
- Absorbing substance
Epithelial tissue can be classified according to
Number or cell layer
The shape of the cells
movement of materials
Simple
Protection
Stratifies
Cleaning
Pseudostratified
Diffusion and filtration
Squamous
Absorption and secretion
Cuboidal and columnar
- Single cell layer
- Found where absorption, secretion, and filtration occur
- A thin epithelial barrier is desirable
Simple epithelium
- Consists of two or more cells.
- It regenerates from below and more durable than simple epithelia
Stratified epithelium
- Forms a thick epithelium because it consists of many layers of cells.
- Cells divide in the deeper layers, and newer cells push older ones farther outward, where they flatten.
Stratified squamous
mineralized matrix.
Bone
liquid matrix.
Blood
Ability to contract and shorten
Muscle tissue
Fors the brain, spinal cord, and nerves. Coordinating and controlling
Nervous tissue
a thin sheet or layer of tissue that covers a structures.
Tissue membrane
Three major categories of tissue membrane
Mucous
Serous
Synovial
Line cavities that open to the outside and often contain mucous glands which secretes mucus.
Mucous
line the trunk cavities and cover the organs located within these cavities.
Serouse
line the joint cavities
Synovial
The substitution of viable cells for dead cells.
Tissue repair
The substitution of viable cells for dead cells.
Tissue repair
Tissue repair occurs in two major ways
Regeneration
Fibrosis
