Tight junctions make the spaces between cells____, whereas desmosomes increase the ____ of a tissue.

Verified step by step guidance

1. Step 1: Understand the role of tight junctions. Tight junctions are specialized connections between adjacent cells that create a seal to prevent the passage of substances between the cells. This makes the spaces between cells impermeable.
2. Step 2: Recognize the function of desmosomes. Desmosomes are anchoring junctions that provide mechanical strength by connecting the cytoskeletons of adjacent cells, increasing the tissue's structural integrity.
3. Step 3: Analyze the question. The first blank refers to the property of tight junctions, which is to make the spaces between cells impermeable. The second blank refers to the property of desmosomes, which is to enhance the strength or stability of the tissue.
4. Step 4: Fill in the blanks with the appropriate terms based on the functions of tight junctions and desmosomes. For the first blank, use 'impermeable,' and for the second blank, use 'strength' or 'stability.'
5. Step 5: Review the completed sentence to ensure it aligns with the functions of tight junctions and desmosomes: 'Tight junctions make the spaces between cells impermeable, whereas desmosomes increase the strength of a tissue.'

Key Concepts

Tight Junctions

Tight junctions are specialized connections between adjacent epithelial cells that create a barrier to prevent the passage of molecules and ions through the space between cells. They are crucial for maintaining the integrity of tissues by controlling permeability and ensuring that substances must pass through the cells rather than between them.

Desmosomes

Desmosomes are intercellular junctions that provide strong adhesion between cells, particularly in tissues that experience significant mechanical stress, such as skin and cardiac muscle. They consist of protein complexes that anchor to the cytoskeleton, enhancing the structural integrity and resilience of the tissue.

Tissue Integrity

Tissue integrity refers to the overall health and stability of a tissue, which is maintained through various cellular junctions and interactions. The balance between tight junctions and desmosomes is essential for ensuring that tissues can withstand physical forces while regulating the movement of substances, thus preserving their function.