| A | B |
|---|
| cytology | study of cells/cellular structure |
| squamous | thin, flat scaly |
| cuboidal | square looking |
| columnar | taller then wider. columns |
| polygonal (liver/kidney cells) | irregularly angular shapes, multiple sides |
| sellate (neuron cells) | star-like |
| spheroid to ovoid (White blood cells) | round to oval |
| discoid (red blood cells) | disc shaped |
| fusiform (smooth muscle cells) | thick in middle, tapered at ends |
| fibrous (skeletal muscle) | thread like |
| Basic components of Cell | Plasma cell membrane, cytoplasm, nucleus, nucleolis, endoplasmic reticulum |
| endoplasmic reticulum | 2 types: smooth and rough (rough has ribosomes) |
| plasma membrane | surrounds cell, defines boundaries, composed of 2% protein/98% lipids |
| 3 major lipid molecules in the plasma membrane | 75% phospholipid, 20%- cholesterol; 5%-glycolipids |
| 2 types of proteins in plasma membrane | transmembrane proteins; peripheral proteins |
| transmembrane proteins | cann pass completely through plasma membrane |
| peripheral proteins | adhere to face of membrane (cannot pass through membrane) |
| selectively permeable | allows only specific molecules to go in and out of the cell |
| Golgi complex | synthesizes carbohydrates and finishes protein synthesis |
| mitochondrion | ATP synthesis; contains own DNA (mitochondrial DNA) |
| centrioles | 9 groups of 3 microtubules; chromosome movement and play role in cell division |
| cytoskeleton made of s major structures | skeleton of cell composed of microfilaments, intermediate fibers, and microtubules, |
| function of cytoskeleton | Determines cell shape, supports structure, organizes cell contents, directs movement of materials within cell, contributes to movements of the cell as a whole |
