-
Function of Epithelial tissue
- Physical Protection for exposed and internal surfaces from dehydration, abrasion, and physical, chemical and biological agents
- Slective permeability - regulates the passage of certain molecules in or out of a certain region of the body.
- Secretion - some epithelial cells called exocrine cells produce secretions such as sweat or oil.
- Sensations - possess nerve endings that can detect light, taste, sound, smell and hearing.
-
Connective Tissue Function
- Physical Protection
- Support & Structural framework
- Binding of structures
- Storage
- Transport
- Immune Protection
-
Muscle Tissue Function
Facilitates movement of skeleton or organ walls
-
Nervous Tissue Function
Neurons: Control Activities, process information
Glial Cells: Support and protect neurons
-
Types of Intercellular Junctions
- Tight Junctions
- Adhering Junctions
- Desmosomes
- Gap Junctions
-
Tight Junctions
- Relays information to other cells.
- Prevent passage of molecules and ions through the space between cells, so they must pass through the cell (by diffusion or active transport).
Example: Muscle Memory
-
Adhering Junctions
- Provide strong mechanical attachments between adjacent cells.
- Hold cardiac muscle cells tightly together as the heart expands and contracts
- Hold epithelial cells together
- responsible for contact inhibition
-
Gap Junctions
- Permit free passage between the cells of ions and small molecules.
- Permit change in membrane potential to pass from cell to cell.
-
Desmosomes
localized patches that hold two cells tightly together.
-
Characteristics of Epithelial Tissue
- Cellularity
- Polarity
- Attachment
- Avascularity
- Innervention
-
What Tissue is the arrow pointing to?
Simple Squamous Epithelium
-
What tissue is this?
Simple Cuboidal Epithelium
-
What tissue is this?
Simple Columnar Epithelium
-
What tissue is this?
Stratified Squamous Epithelium
-
What tissue is this?
Stratified Cuboidal Epithelium
-
What tissue is this?
Stratified Columnar Epithelium
-
What tissue is this?
Psudostratified Columnar Epithelium (ciliated)
-
What tissue is this?
Transitional Epithelial Tissue
-
Structural Components of Connective Tissue
- Cells - different cells for different types of CT....bone cells, cartilage cells, fat cells
- Protein Fibers - elastic fibers, collagen, reticular fibers
- Ground Substance - a mixture of proteins and carbs with variable amounts of salts and H2O
-
Location of simple simple squamous epithelium?
Lining of heart chambers
-
Location of simple simple cuboidal epithelium?
Kidney Tubules
-
Location of simple simple columnar epithelium?
1. ciliated
2. nonciliated
- 1. lining of uterine tube
- 2. lining of stomach, or digestive tract
-
Location of simple Stratified Squamous epithelium?
1. Keratinized
2. Nonkeratinized
- 1. Epidermis of skin
- 2. vagina
-
Location of simple Stratified Cuboidal epithelium?
Duct of sweat gland
-
Location of simple Stratified Columnar epithelium?
Male Urethra
-
Location of simple Psuedostratified Columnar epithelium?
- nasal cavity lining
- trachea
- larynx
-
Location of simple Transitional epithelium?
Lining of urinary bladder
-
What tissue is this?
Mesenchym
-
What tissue is this?
Muscous Connective Tissue
-
What tissue is this?
Areolar Connective Tissue
-
What tissue is this?
Adipose Connective Tissue
-
What tissue is this?
Reticular Connective Tissue
-
What tissue is this?
Dense Regular Connective Tissue
-
What tissue is this?
Dense Irregular Connective Tissue
-
What tissue is this?
Elastic Connective Tissue
-
What tissue is this?
Hyaline Cartilage
-
What tissue is this?
Fibrocartilage
-
What tissue is this?
Elastic Cartilage
-
What tissue is this?
Bone
-
What tissue is this?
Cardiac Muscle Tissue
-
What tissue is this?
Smooth Muscle Tissue
-
What tissue is this?
Nervous Tissue
-
Location of Mesenchyme
Body of embryo, fetus and adult
-
Location of Mucous Connective Tissue
Umbilical chord of fetus
-
Location of Areolar Connective Tissue
Subcutaneous Layer under skin
Papillary layer of dermis
-
Location of Adipose Connective Tissue
Fat cells which stores energy
- covers and surrounds some organs
- Hypodermis
-
Location of Reticular Connective Tissue
- stroma of lymph nodes
- spleed
- thymus
- bone marrow
-
Location of Dense Regular Connective Tissue
tendons, most ligaments
-
Location of Dense Irregular Connective Tissue
Reticular layer of Dermis
-
Location of Elastic Connective Tissue
Aorta wall
-
Location of Hyaline Cartilage, Supporting Connective Tissue
- Articular Cartilage on bone
- most of fetal skeleton
- Trachea
- Nose
-
Location of Fibrocartilage, Supporting Connective Tissue
Intervertebral Discs
-
Location of Elastic Cartilage, Supporting Connective Tissue
External ear
-
Location of Skeletal Muscle Tissue
- Attaches to bones or sometimes skin
- Makes the muscle contract
-
Location of Cardiac Muscle Tissue
Heart Wall
-
Location of Smooth Muscle Tissue
muscularis of small intestine.
-
Location of Nervous Tissue
-
What are chondrocytes?
- Cartilage cells
- They secrete gel-like extracellular matrix containing collagen and elastic fibers
- Occupy small spaces enclosed by their extracellular matrix called lacunae
- Provide support and withstand deformation such as the nose and the ear.
-
What are osteocytes?
- Bone cells
- Extracellular matrix is a unique mix of collagen and bone salts
-
What is Fluid connective tissue composed of?
- Erythrocytes
- Leukocytes
- Platelets
- Plasma
-
What are Erythrocytes?
Red blood cells
-
What are Leukocytes?
White blood cells
-
What are platelets?
Fragments of blood cells involved in blood clotting
-
What is plasma?
a watery ground substance containing protein fibers
-
What types of cells are in the nervous tissue?
-
What are neurons?
Nerve cells that are capable of initiating and conducting electrical activity throughout the body
-
What is Neuroglia?
cells that support the neurons
|
|
