Podcast
Questions and Answers
What is the function of the cell membrane?
What is the function of the cell membrane?
What is the main focus of histology?
What is the main focus of histology?
Which microscope is capable of visualizing the cell membrane?
Which microscope is capable of visualizing the cell membrane?
What are the two main compartments of a cell?
What are the two main compartments of a cell?
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What is the smallest structural and functional unit in the human body?
What is the smallest structural and functional unit in the human body?
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Which cell membrane specialization is responsible for increasing the surface area of absorptive cells in the small intestine?
Which cell membrane specialization is responsible for increasing the surface area of absorptive cells in the small intestine?
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What type of cell membrane specialization is responsible for pushing away mucus and harmful materials in certain parts of the respiratory tract?
What type of cell membrane specialization is responsible for pushing away mucus and harmful materials in certain parts of the respiratory tract?
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Which type of cell junction connects adjacent cells together by fusing their outer layers and having an absent intercellular space?
Which type of cell junction connects adjacent cells together by fusing their outer layers and having an absent intercellular space?
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Which cell membrane specialization is longer and present only in spermatozoa?
Which cell membrane specialization is longer and present only in spermatozoa?
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What is the main function of gap junctions in cell membranes?
What is the main function of gap junctions in cell membranes?
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Which cell membrane specialization is responsible for moving in one direction and pushing away mucus and harmful materials?
Which cell membrane specialization is responsible for moving in one direction and pushing away mucus and harmful materials?
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What type of cell junction connects adjacent cells together and has a narrowing of the intercellular space between them?
What type of cell junction connects adjacent cells together and has a narrowing of the intercellular space between them?
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Which cell membrane specialization is composed of long finger-like projections on the surface of absorptive cells in the small intestine?
Which cell membrane specialization is composed of long finger-like projections on the surface of absorptive cells in the small intestine?
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Which cell membrane specialization is longer and present only in spermatozoa?
Which cell membrane specialization is longer and present only in spermatozoa?
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What type of cell membrane specialization is responsible for increasing the surface area of certain cells, such as absorptive cells in the small intestine?
What type of cell membrane specialization is responsible for increasing the surface area of certain cells, such as absorptive cells in the small intestine?
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Study Notes
Cell Membrane and Cellular Compartments
- The cell membrane, also known as the plasma membrane, serves as a selective barrier, regulating the movement of substances in and out of the cell.
- The cell consists of two main compartments: the cytoplasm and the nucleus.
Histology and Microscopy
- The main focus of histology is the study of the structure and organization of cells and tissues.
- The electron microscope is capable of visualizing the cell membrane, which is too thin to be seen with a light microscope.
Cell Membrane Specializations
- Microvilli are cell membrane specializations that increase the surface area of absorptive cells in the small intestine, allowing for more efficient nutrient absorption.
- Cilia are cell membrane specializations that push away mucus and harmful materials in certain parts of the respiratory tract.
- Flagella are longer and present only in spermatozoa, responsible for their movement.
Cell Junctions
- Tight junctions connect adjacent cells together by fusing their outer layers and having an absent intercellular space.
- Gap junctions connect adjacent cells together and allow for direct communication between them, enabling the exchange of ions, nutrients, and waste products.
- Desmosomes connect adjacent cells together and have a narrowing of the intercellular space between them.
Cellular Structure and Function
- The cell is the smallest structural and functional unit in the human body.
- The main function of gap junctions is to facilitate direct communication between adjacent cells, allowing for the exchange of ions, nutrients, and waste products.
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Description
Test your knowledge on the lecture by Prof Dr. Ehsan Salah covering the study of microscopic structure of cells, tissues, and organs. Topics include the organization of the human body and basic histology.
