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Questions and Answers
Which type of capillary has tight junctions with intercellular clefts, allowing passage of solutes?
Which type of capillary has tight junctions with intercellular clefts, allowing passage of solutes?
- Fenestrated capillaries
- Continuous capillaries (correct)
- Sinusoids capillaries
- All of the above
What is the primary function of fenestrated capillaries?
What is the primary function of fenestrated capillaries?
- To regulate blood pressure in the spleen
- To store blood cells in the bone marrow
- To filter blood in the liver
- To facilitate rapid absorption or filtration in organs such as the kidneys and small intestine (correct)
Which of the following locations is characterized by the presence of sinusoids capillaries?
Which of the following locations is characterized by the presence of sinusoids capillaries?
- Kidneys
- Small intestine
- Liver, bone marrow, spleen, and lymphatic organs (correct)
- Skeletal muscle
What is a characteristic feature of sinusoids capillaries?
What is a characteristic feature of sinusoids capillaries?
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In which type of capillary can proteins and blood cells pass through?
In which type of capillary can proteins and blood cells pass through?
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Study Notes
Types of Capillaries
- There are three main types of capillaries
Continuous Capillaries
- Endothelial cell membranes form a continuous tube with tight junctions and intercellular clefts, allowing passage of solutes
- Found in most tissues, such as skeletal muscle
Fenestrated Capillaries
- Characterized by fenestrations or pores in the endothelial cells
- Located in organs that require rapid absorption or filtration, such as the kidneys and small intestine
Sinusoids Capillaries
- Endothelial cells are separated by wide gaps with no basal lamina, allowing molecules, including proteins and blood cells, to pass through
- Found in organs such as the liver, bone marrow, spleen, and lymphatic organs
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