Campbell Review (Cells, Tissues, Organs, Organ Systems) Flashcards
Tissues
Groups of cells with a common function
Types of tissues (4)
Epithelial, Connective, Muscle, and Nervous
Simple squamous
- Lines blood vessels and air sacs of lungs
- Permits exchange of nutrients, wastes, and gases
Simple cobodial
- Lines kidney tubules and glands
- Secretes and reabsorbs water and small molecules
Simple columnar
- Lines most digestive organs
- Absorbs nutrients produces mucus
Stratified squamous
- Outer layer of skin, mouth, vagina
- Protects against abrasion, drying out , infection
Stratified cubodial
-Lines ducts of sweat glands
-Either exocrine (secretes out of the organs) or
endocrine (secretes into organs)
-Secretes water and ions
Stratified columnar
- Lines epidermis, mammary glands, larynx
- Secretes mucus
Basement membrane
Structural support that attaches epithelial layer to underlying tissues
Junctions
Holds epithelial cells together
Types of junctions (3)
Tight, Adhesion/spot desmosomes, and Gap
Tight Junctions
- Serves as a barrier between the apical (top) and the basal (bottom) part of the cell
- Polarizes the apical area of the cell
Adhesion junction/ Spot desmosomes
Some movement between cells
Gap Junctions
Protein channels
Types of fibrous connective tissue (5)
Loose, Dense, Elastic, and Reticular
Loose connective tissue
Surrounds many organs, lines cavities around blood vessels
Dense connective tissue
Tendons, ligaments, and deeper layers of skin
Elastic connective tissue
Surrounds stomach and bladder, maintains shape
Reticular connective tissue
Internal framework of soft organs (such as the liver) and lymphatic system
Types of special connective tissue (4)
Cartilage, Bone, Blood, and Adipose
Cartilage connective tissue
- Produced by chondroblasts
- Found in lacunae
- No blood vessels
- High collagen content
Lacunae
Space within bone where cartilage in found
Bone connective tissue
Inorganic matrix with calcium slats for hardness
Blood connective tissue
Fluid matrix plasma, red blood cells, white blood cells, and platelets