Podcast
Questions and Answers
Which characteristic distinguishes adipose tissue from other connective tissues?
Which characteristic distinguishes adipose tissue from other connective tissues?
- High vascularity.
- Presence of collagen fibers.
- Adipocytes as the main cell type. (correct)
- Predominance of fibroblasts.
What is the primary storage depot found within adipose tissue?
What is the primary storage depot found within adipose tissue?
- Glucose
- Amino acids
- Glycogen
- Triglycerides (correct)
How does the percentage of adipose tissue typically differ between men and women?
How does the percentage of adipose tissue typically differ between men and women?
- Women have a higher percentage due to hormonal influences. (correct)
- Men have a higher percentage due to muscle mass.
- Adipose tissue percentage is solely determined by diet.
- The percentage is roughly equal in both sexes.
What structural characteristic is typical of white adipocytes?
What structural characteristic is typical of white adipocytes?
Which cellular feature gives the 'signet-ring' appearance to white adipocytes?
Which cellular feature gives the 'signet-ring' appearance to white adipocytes?
How does the distribution of white adipose tissue change from infancy to adulthood?
How does the distribution of white adipose tissue change from infancy to adulthood?
What type of stem cell gives rise to adipocytes?
What type of stem cell gives rise to adipocytes?
In which area is brown adipose tissue primarily located in newborns?
In which area is brown adipose tissue primarily located in newborns?
What is the distinctive structural characteristic of brown adipocytes compared to white adipocytes?
What is the distinctive structural characteristic of brown adipocytes compared to white adipocytes?
What is the main function of brown adipose tissue?
What is the main function of brown adipose tissue?
Which feature contributes to the brown color of brown adipose tissue?
Which feature contributes to the brown color of brown adipose tissue?
How is the nucleus positioned within brown adipocytes compared to white adipocytes?
How is the nucleus positioned within brown adipocytes compared to white adipocytes?
In adults, where is brown adipose tissue found?
In adults, where is brown adipose tissue found?
What term describes the process by which brown adipose tissue generates heat?
What term describes the process by which brown adipose tissue generates heat?
What happens to the amount of brown adipose tissue from infancy to adulthood?
What happens to the amount of brown adipose tissue from infancy to adulthood?
Which of these processes describes how mesenchymal stem cells can be harvested for therapeutic use?
Which of these processes describes how mesenchymal stem cells can be harvested for therapeutic use?
Which of the following statements accurately describes the location of white adipose tissue in adult females?
Which of the following statements accurately describes the location of white adipose tissue in adult females?
What is the diameter range of a fully developed white adipocyte?
What is the diameter range of a fully developed white adipocyte?
Adipose tissue is found both isolated in small groups, and in large aggregates within what types of connective tissue?
Adipose tissue is found both isolated in small groups, and in large aggregates within what types of connective tissue?
Brown adipose tissue is also found in what kind of animals?
Brown adipose tissue is also found in what kind of animals?
Flashcards
Adipose Tissue
Adipose Tissue
A connective tissue in which fat-storing cells (adipocytes) are predominant, acting as storage depots for neutral fats, especially triglycerides.
White Adipose Tissue
White Adipose Tissue
Adipose tissue containing cells each with one large cytoplasmic droplet; designed for long-term energy storage.
Signet-ring appearance
Signet-ring appearance
A lipid-storage cell with a nucleus pushed to the periphery.
White Adipose Tissue Distribution
White Adipose Tissue Distribution
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Brown Adipose Tissue
Brown Adipose Tissue
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Multilocular
Multilocular
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Study Notes
- Adipose tissue is a connective tissue
Adipose Tissue
- Large cells are found in isolation or in small groups within loose or dense irregular connective tissue.
- It occurs in large aggregates.
- This connective tissue is where fat-storing cells or adipocytes predominate.
- It represents 15% to 20% of the body weight in men, and more in women.
- It is a storage depot for neutral fats, chiefly triglycerides.
- White and brown adipose tissues are different in color, location, function, and structure.
White Adipose Tissue
- White adipose connective tissue is more common than brown.
- Cells each contains one large cytoplasmic droplet.
- It offers long-term energy storage.
- When completely developed, a white adipocyte is very large, between 50 and 150 umm in diameter, and is unilocular (each fat cell contains only one fat vacuole).
- It has a signet-ring appearance, where the nucleus is pushed to the periphery, as the cytoplasm is full of fat.
- Lipomas are tumors of fatty tissue.
- The distribution of white adipose tissue changes significantly through childhood and adult life.
- In newborns and babies, distribution is even throughout the body, but it differs after puberty.
- In females, it is around the belly, buttock, and breast region.
- In males, it is usually around the abdomen.
- Adipocytes develop from mesenchymal stem cells.
Brown Adipose Tissue
- Brown adipose tissue constitutes 2%–5% of the newborn body weight.
- It is located mainly in the back, neck, and shoulders of newborns.
- In adults, it is found only in scattered areas: around the kidneys, adrenal glands, aorta, and mediastinum.
- Brown fat color is due to very abundant mitochondria and the large number of blood capillaries.
- Brown adipocytes contain many small lipid inclusions, that are multilocular.
- The tissues principal function is heat production and warming the blood, also known as thermogenesis.
- Cells of brown fat are smaller than white adipocytes, and the nucleus is more centrally located.
- Brown fat is burned to maintain temperature, and can also be seen in hibernating animals.
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