Podcast
Questions and Answers
What is the main function of cell junctions?
What is the main function of cell junctions?
- Allow for communication between neighboring cells (correct)
- Decrease communication between cells and extracellular matrix
- Facilitate movement of blood cells
- Enhance stress on individual cells
Which of the following is NOT a function of cell junctions?
Which of the following is NOT a function of cell junctions?
- Control the paracellular transport
- Build up the paracellular barrier of epithelia
- Bond cells together
- Enable cell movement (correct)
In what way do cell junctions contribute to reducing stress placed upon cells?
In what way do cell junctions contribute to reducing stress placed upon cells?
- By allowing free movement of cells
- By increasing cellular communication
- By bonding cells together (correct)
- By decreasing cellular adhesion
Which statement best describes the purpose of the paracellular barrier in epithelia?
Which statement best describes the purpose of the paracellular barrier in epithelia?
What does the term 'ground substance' refer to in the context of cell junctions?
What does the term 'ground substance' refer to in the context of cell junctions?
Why are cell junctions particularly abundant in tissues?
Why are cell junctions particularly abundant in tissues?
Which type of junction is responsible for forming channel-like connections between cells?
Which type of junction is responsible for forming channel-like connections between cells?
In which tissue type are direct attachments between cells rare?
In which tissue type are direct attachments between cells rare?
What is the function of cell-matrix junctions in epithelial tissues?
What is the function of cell-matrix junctions in epithelial tissues?
Which type of junction reinforces cell adhesion by linking the cytoskeletons of adjacent cells?
Which type of junction reinforces cell adhesion by linking the cytoskeletons of adjacent cells?
Which tissue type bears most of the mechanical stress in the interstitial matrix?
Which tissue type bears most of the mechanical stress in the interstitial matrix?
Which type of cell-matrix junction is responsible for connecting cells to the ECM via integrin proteins?
Which type of cell-matrix junction is responsible for connecting cells to the ECM via integrin proteins?
What type of molecules can pass through GAP JUNCTIONS from cell to cell?
What type of molecules can pass through GAP JUNCTIONS from cell to cell?
Where are GAP JUNCTIONS located in the body?
Where are GAP JUNCTIONS located in the body?
Which proteins bridge cell-matrix interactions in TUNNEL cell-matrix anchoring junctions?
Which proteins bridge cell-matrix interactions in TUNNEL cell-matrix anchoring junctions?
What activates INTEGRINS in cell-matrix interactions?
What activates INTEGRINS in cell-matrix interactions?
What is the main function of ACTIN-LINKED CELL-MATRIX JUNCTIONS or focal adhesions?
What is the main function of ACTIN-LINKED CELL-MATRIX JUNCTIONS or focal adhesions?
Which of the following functions can be influenced by INTEGRINS through intracellular signals?
Which of the following functions can be influenced by INTEGRINS through intracellular signals?
What is the main function of tight junctions?
What is the main function of tight junctions?
Which proteins make up tight junctions?
Which proteins make up tight junctions?
Where are tight junctions mostly located?
Where are tight junctions mostly located?
What is the function of cell-cell anchoring junctions?
What is the function of cell-cell anchoring junctions?
Which transmembrane adhesion proteins are involved in cell-cell anchoring junctions?
Which transmembrane adhesion proteins are involved in cell-cell anchoring junctions?
What is the function of cadherins in cell-cell anchoring junctions?
What is the function of cadherins in cell-cell anchoring junctions?
What is the main function of adherens junctions?
What is the main function of adherens junctions?
Where are desmosomes primarily located?
Where are desmosomes primarily located?
What is the structural difference between adherens junctions and desmosomes?
What is the structural difference between adherens junctions and desmosomes?
In which type of tissues would you expect to find adherens junctions predominantly?
In which type of tissues would you expect to find adherens junctions predominantly?
What is the main role of desmosomes in tissues?
What is the main role of desmosomes in tissues?
What is the electron micrograph shown in the text depicting?
What is the electron micrograph shown in the text depicting?
What is the primary function of cell junctions in tissues?
What is the primary function of cell junctions in tissues?
Which type of junction is responsible for building up the paracellular barrier in epithelial tissues?
Which type of junction is responsible for building up the paracellular barrier in epithelial tissues?
In which type of tissues are cell junctions particularly abundant?
In which type of tissues are cell junctions particularly abundant?
What is the main role of integrins in cell-matrix interactions?
What is the main role of integrins in cell-matrix interactions?
Which function is NOT associated with cell junctions?
Which function is NOT associated with cell junctions?
Where are desmosomes primarily located in tissues?
Where are desmosomes primarily located in tissues?
How do tight junctions contribute to reducing stress in tissues?
How do tight junctions contribute to reducing stress in tissues?
Which statement best describes the function of cadherins in cell-cell anchoring junctions?
Which statement best describes the function of cadherins in cell-cell anchoring junctions?
Where are desmosomes primarily located in the body?
Where are desmosomes primarily located in the body?
What is the role of claudin and occludin in tight junctions?
What is the role of claudin and occludin in tight junctions?
In what type of tissues would you expect to find adherens junctions predominantly?
In what type of tissues would you expect to find adherens junctions predominantly?
What distinguishes adherens junctions from desmosomes in terms of their structure?
What distinguishes adherens junctions from desmosomes in terms of their structure?
Which type of junction is responsible for forming direct attachments between cells?
Which type of junction is responsible for forming direct attachments between cells?
In which tissues would you expect to find HEIMDESMOSOMES predominantly?
In which tissues would you expect to find HEIMDESMOSOMES predominantly?
Which type of junction is responsible for allowing small molecules and ions to pass between adjacent cells?
Which type of junction is responsible for allowing small molecules and ions to pass between adjacent cells?
What is the main role of cell-matrix anchoring junctions?
What is the main role of cell-matrix anchoring junctions?
Which cells are primarily responsible for producing the extracellular matrix in connective tissues?
Which cells are primarily responsible for producing the extracellular matrix in connective tissues?
Where are tight junctions primarily located in the body?
Where are tight junctions primarily located in the body?
What is the width of the gap in GAP JUNCTIONS that allows the passage of small hydrophilic molecules?
What is the width of the gap in GAP JUNCTIONS that allows the passage of small hydrophilic molecules?
Which type of junction anchors actin filaments in cells to the extracellular matrix?
Which type of junction anchors actin filaments in cells to the extracellular matrix?
What is the main function of INTEGRINS in cell-matrix interactions?
What is the main function of INTEGRINS in cell-matrix interactions?
Which tissue type is NOT mentioned as containing GAP JUNCTIONS?
Which tissue type is NOT mentioned as containing GAP JUNCTIONS?
What do ACTIN-LINKED CELL-MATRIX JUNCTIONS primarily anchor in cells?
What do ACTIN-LINKED CELL-MATRIX JUNCTIONS primarily anchor in cells?
Which aspect of cell behavior can be influenced by INTEGRINS through intracellular signals?
Which aspect of cell behavior can be influenced by INTEGRINS through intracellular signals?
What is the main function of desmosomes in cell junctions?
What is the main function of desmosomes in cell junctions?
Where are zonula adherens predominantly located within tissues?
Where are zonula adherens predominantly located within tissues?
Which type of cell-cell junction is especially abundant in tissues subject to significant stretching or stress?
Which type of cell-cell junction is especially abundant in tissues subject to significant stretching or stress?
What is the structural difference between zonula adherens and desmosomes?
What is the structural difference between zonula adherens and desmosomes?
Which type of cell junction provides mechanical strength to tissues that face a lot of stress or stretching?
Which type of cell junction provides mechanical strength to tissues that face a lot of stress or stretching?
What is the main function of cell junctions?
What is the main function of cell junctions?
Which function is NOT associated with cell junctions?
Which function is NOT associated with cell junctions?
In what way do cell junctions contribute to reducing stress placed upon cells?
In what way do cell junctions contribute to reducing stress placed upon cells?
Which statement best describes the purpose of the paracellular barrier in epithelia?
Which statement best describes the purpose of the paracellular barrier in epithelia?
What distinguishes adherens junctions from desmosomes?
What distinguishes adherens junctions from desmosomes?
Where are gap junctions primarily located in tissues?
Where are gap junctions primarily located in tissues?
What is the main function of zonula adherens junctions?
What is the main function of zonula adherens junctions?
Where are desmosomes primarily located?
Where are desmosomes primarily located?
Which type of cell junction is structurally similar to adherens junctions but connects intermediate filaments instead of actin filaments?
Which type of cell junction is structurally similar to adherens junctions but connects intermediate filaments instead of actin filaments?
What is the main function of junctional complexes?
What is the main function of junctional complexes?
Which type of cell junction is located more basal than tight junctions in epithelial and endothelial tissues?
Which type of cell junction is located more basal than tight junctions in epithelial and endothelial tissues?
What is the primary role of adhesion belts or zonula adherens?
What is the primary role of adhesion belts or zonula adherens?
What proteins make up tight junctions?
What proteins make up tight junctions?
Where are tight junctions mostly found in the body?
Where are tight junctions mostly found in the body?
What is the primary function of desmosomes in cell junctions?
What is the primary function of desmosomes in cell junctions?
Which type of tissue contains abundant anchoring junctions due to mechanical stress?
Which type of tissue contains abundant anchoring junctions due to mechanical stress?
What is the main role of CADHERINS in cell-cell anchoring junctions?
What is the main role of CADHERINS in cell-cell anchoring junctions?
Where are adherens junctions predominantly located within tissues?
Where are adherens junctions predominantly located within tissues?
What is the primary function of GAP JUNCTIONS?
What is the primary function of GAP JUNCTIONS?
Which type of junction anchors actin filaments in cells to the extracellular matrix?
Which type of junction anchors actin filaments in cells to the extracellular matrix?
What is a common function influenced by INTEGRINS through intracellular signals?
What is a common function influenced by INTEGRINS through intracellular signals?
Where are focal adhesions primarily located?
Where are focal adhesions primarily located?
Which type of junction allows action potentials to spread rapidly from cell to cell?
Which type of junction allows action potentials to spread rapidly from cell to cell?
What is the main purpose of TUNNEL CELL-MATRIX ANCHORING JUNCTIONS?
What is the main purpose of TUNNEL CELL-MATRIX ANCHORING JUNCTIONS?
Where are Lining of the intestines and epidermal covering of the skin primarily located?
Where are Lining of the intestines and epidermal covering of the skin primarily located?
What is the main function of GAP JUNCTIONS?
What is the main function of GAP JUNCTIONS?
Which type of junction is especially abundant in tissues subject to significant stretching or stress?
Which type of junction is especially abundant in tissues subject to significant stretching or stress?
Where would you NOT expect to find direct attachments between cells?
Where would you NOT expect to find direct attachments between cells?
What primarily anchors in ACTIN-LINKED CELL-MATRIX JUNCTIONS?
What primarily anchors in ACTIN-LINKED CELL-MATRIX JUNCTIONS?
Which type of tissues have cell-matrix anchoring junctions like HEMIDESMOSOMES?
Which type of tissues have cell-matrix anchoring junctions like HEMIDESMOSOMES?
