Tissues Flashcards
Tissues
A collection of cells working together for a specific function
Organ
Two or more tissue types working together for a common function
Four types of tissues
- Epithelial
- Connective
- Muscular
- Nervous
Epithelial Tissue
- Contains cells that are tightly packed together
- Little to no extracellular matrix space
Where are epithelial tissue located?
Located on the body’s surfaces - Outer layer of the skin, Lines the body’s cavities (esophagus, bladder)
How are epithelial tissues classified
By shape and layers
Epithelial tissue Shapes
- Squamous
- Cuboidal
- Columnar
Epithelial tissue cell layers
- Simple
2. Stratified
Connective Tissue Definition
The most wide spread and diverse type of tissue
What types of Connective tissue
- Fibrous connective tissue
- Cartilage
- Bone
- Blood
Two types of fibrous connective tissue
- Loose Connective Tissue
2. Dense Connective Tissue
Types of Loose connective tissue
- Areolar
- Adipose
- Reticular
Dense connective tissue
Mainly compacted collagen fibers
-Tendons & ligaments
Cartilage
Composed of chondrocytes that have a lot of matrix space that is flexible
-Little blood flow
What gives Cartilage its characteristic
Matrix space and substances
Three types of cartilage
- Hyaline
- Elastic
- Fibrocartilage
Bone
Type of connective tissue and contains osteocytes
- A lot of matrix space which is filled with calcium phosphate salt and collagen fibers - this gives bones its hard but yet slightly flexible characteristic
Blood
Unique tissue because it is a fluid
Types of blood
- Red blood cells
- White blood cells
- Plasma (Blood plasma is the matrix)
Muscular tissue
The cells of muscle tissue are unique because they can go through contraction
Matrix of Muscular tissue
Little to no matrix space
Three types of muscle tissue
- Skeletal muscle
- Smooth muscle
- Cardiac Muscle
Skeletal Muscle
- Attached to the skeletal system
- Striated appearance and under voluntary control
Cardiac Muscle
Found in the heart
-Striated appearance and under unconscious/involuntary control
Smooth Muscle
Found primarily within internal organs
-Not striated and under unconscious/involuntary control
Nervous Tissue
Nerve cells have a very unique shape and size
-Conduct electrical impulses as a form of communication within the body
What is the matrix space of nervous tissue
Filled with support cells referred to neuroglia cells
What are the two ways of tissue repair
- Regeneration
2. Fibrous
Regeneration of Tissue
Occurs when damaged/injured cells of the tissue are replaced within the same cells
Fibrosis tissue repair
Occurs when the damaged/injured cells of the tissue are replaced with scar tissue
***Function is NOT maintained
