Function of Mitochondria
Primary function: Produce ATP (adenosine triphosphate), which serves as the energy currency for cells.
ATP is crucial for various cellular processes and activities.
Structure of Mitochondria
Mitochondria have distinctive structures that can be recognized under different microscopy techniques.
Depending on the cut, they may appear circular in cross-section.
Notable feature: Cristae
These are the inner foldings within the mitochondria that increase surface area for ATP production.
Cristae are visible in electron micrographs, even when the mitochondria are cut in cross-section.
Importance of Cells
Cells are the basic unit of life and can be studied through histology, or the microscopic examination of tissues.
Histological analysis allows observation of structures like mitochondria and others, using light and electron microscopes.
Different Microscope Views
Mitochondria appear as the largest structure in cells, observable in both light (colored images) and electron (black and white images) micrographs.
Function of Cilia
Cilia are finger-like projections extending from the plasma membrane that can move freely.
They play a role in moving mucus over cell surfaces, directing it towards the throat and away from the lungs.
Visually represented as pink hair-like structures on the cell surface, aiding in mucus clearance.
Function of Desmosomes
Desmosomes are specialized structures that hold cells together, enhancing tissue integrity.
They create mechanical linkages between adjacent cells, functioning like Velcro.
Important in maintaining structural cohesion among cells in tissues that endure mechanical stress.
Visualization of Desmosomes
In histological images, desmosomes appear as two parallel dark lines between adjacent cells due to dense protein structures.
Laboratory sessions may include viewing desmosomes in prepared slides for better understanding of cell-to-cell adhesion.
Mitochondria are critical for ATP production in cells, marked by their unique cristae structure.
Key cell structures, including cilia and desmosomes, contribute to essential functions such as mucus movement and providing structural integrity, observable through targeted histological techniques.