Flashcards in Cells & Tissues Deck (51)
Functions of connective tissue? (Tip: there are 4)
Name the different types of connective tissue.
(Tip: There are 3 types)
Connective Tissue Proper
Fluid Connective Tissue
Supporting Connective Tissue
List some examples of the types of cells found within connective tissue proper.
Name and describe examples of Columnar Epithelium
Define and describe a Eukaryotic cell
Contain a nucleus with DNA (Karyon)
Size 10-40 microns (or larger)
Describe endoplasmic reticulum (inc. function).
Two types - Rough & Smooth
Rough contains Ribosomes and is the site of protein synthesis within the cell
Smooth is the site of lipid synthesis in the cell
Describe the function and characteristics of epithelial tissue
Protective / Barrier function
Control absorption / secretion
Layers of closely bound cells supported by a basal membrane
1) covering internal and external surfaces of organs
2) lining of cavities and tubes
List the different types of epithelial tissue
They can be either Simple, Stratified or Keratinised
What is the function of the Golgi Complex?
"Assembly & Packaging"
Assembly - Carbohydrate modification
Packaging - modifying & sorting proteins into vesicles
Describe the structure and function of a Lysosome
"Recycling centre of the cell"
- Small sacs containing enzymes
- Has an extreme pH
- Break down small food stuffs
- Destroy unwanted proteins and chemicals
Do Mitochondria contain DNA?
List 5 key organelles within a cell
What is a prokaryote
A single celled organism
List the common characteristics of a Prokaryotic cell
Hereditary information held in cytoplasm
Limited number of organelles
Cell wall & Capsule
1-5 Micron in size
What important eukaryotic cell does not contain a nucleus?
Example site of simple squamous epithelia
Example site(s) of stratified squamous epithelia
Oral cavities, anus, vagina, oesophageal lining
Example of keratinised stratified squamous epithelium
Skin on the palm of hands or soles of feet
What is Simple diffusion?
Net movement of chemicals from regions of a high concentration to regions of a low concentration, until they are distributed
What is Facilitated diffusion?
Plasma membrane integral carriers allow passage through protein channels
What is Osmosis?
Water or solvent chemicals move from regions of a high concentration of water or solvent chemicals through a selectively permeable membrane
What is filtration?
Hydrostatic pressure forces water and small chemicals through selectively permeable membranes from areas of high pressure to areas of low pressure
What is active transport?
Plasma membrane protein carriers transport ions, chemicals from regions of a low concentration to regions of a high concentration
What is Exocytosis?
Cytoplasmic vesicles fuse with the plasma membrane and expel particles from the cell
What is Endocytosis?
Membrane-bound vesicles enclose large chemicals, take them into the cytoplasm, and release them
What are 3 types of Endocytosis?
What is Phagocytosis?
'Cell eating'. Ingesting of solid particles. Forms phagosomes
What is Pinocytosis?
'Cell drinking'. Ingestion of fluid droplets and their dissolved substances. Pinosomes release contents into cytoplasm
What is Receptor-mediated endocytosis?
Specific plasma membrane receptors bind with chemicals, forming ligands, and take them into the cell's cytoplasm via endosomes