Loose Connective Tissue: Areolar and Adipose Quiz
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Questions and Answers

Where is the Loose Connective Tissue Aerolar found?

  • Beneath all epithelia, between muscles, passageways for nerves and blood vessels (correct)
  • Within the brain and spinal cord
  • Within the bone marrow
  • Around major organs such as the heart and liver

    • What is the main function of White Adipose Tissue?

  • Regulation of metabolism
  • Long term energy storage (correct)
  • Production of red blood cells
  • Heat production in newborns

    • How is adipose tissue predominantly composed?

  • Mainly of collagen fibers
  • Adipocytes occur individually or in small clumps in many other connective tissues (correct)
  • Extracellular matrix proteins
  • Primarily of blood vessels

    • What is the function of Brown Adipose Tissue?

    <p>Heat production and warming the blood without shivering</p> Signup and view all the answers

    What causes the lipid to appear black when preserved and stained with osmium tetroxide?

    <p>The presence of triglycerides</p> Signup and view all the answers

    What is the primary source of dietary fats brought to adipocytes?

    <p>Chylomicrons</p> Signup and view all the answers

    What initiates heat production by stimulation of adipocytes in hibernating animals and newborn humans?

    <p>Norepinephrine</p> Signup and view all the answers

    Where is brown adipose tissue mainly concentrated in newborns?

    <p>Neck, back and shoulders</p> Signup and view all the answers

    "What is the percentage of body weight that white adipose tissue constitutes in men?"

    Signup and view all the answers

    What is the primary function of brown adipocytes?

    <p>Generating more heat than other metabolic cells through UCP1</p> Signup and view all the answers

    What is the role of UCP1 in brown adipocytes?

    <p>Allowing protons to flow across the inner mitochondrial membrane, producing heat instead of ATP</p> Signup and view all the answers

    Where are reticular fibers mainly found?

    <p>In the stroma of soft hematopoietic and lymphoid organs</p> Signup and view all the answers

    Which type of connective tissue has collagen fibers arranged parallel to each other?

    <p>Dense Regular Connective Tissue (DRCT)</p> Signup and view all the answers

    Which connective tissue is densely packed with seemingly randomly arranged collagen fibers?

    <p>Dense Irregular Connective Tissue (DICT)</p> Signup and view all the answers

    What is the primary function of elastic connective tissue?

    <p>Being able to stretch and recoil</p> Signup and view all the answers

    What type of cells produce reticular fibers?

    <p>Reticulocytes (modified fibroblasts)</p> Signup and view all the answers

    What enables protons to flow across the inner mitochondrial membrane in brown adipocytes?

    <p>UCP1 or thermogenin</p> Signup and view all the answers

    In which type of connective tissue are fibroblasts referred to as tendinocytes?

    <p>Dense Regular Connective Tissue (DRCT)</p> Signup and view all the answers

    Which type of connective tissue is found in the walls of large arteries, trachea, and vocal cords?

    <p>Elastic Connective Tissue</p> Signup and view all the answers

    What is the primary function of adipose tissue?

    <p>Storage of triglycerides</p> Signup and view all the answers

    Where is brown adipose tissue predominantly concentrated in newborns?

    <p>Neck, back, and shoulders</p> Signup and view all the answers

    What is the primary function of white adipose tissue?

    <p>Long-term energy storage</p> Signup and view all the answers

    What initiates heat production by stimulation of adipocytes in hibernating animals and newborn humans?

    <p>Norepinephrine</p> Signup and view all the answers

    (In) White adipose tissue, where are other organelles located within the adipocytes?

    <p>Near the nucleus or throughout the ring of cytoplasm</p> Signup and view all the answers

    What is the primary function of Brown Adipose Tissue?

    <p>Producing heat through increased cell metabolism</p> Signup and view all the answers

    What enables protons to flow across the inner mitochondrial membrane in brown adipocytes?

    <p>UCP1 or thermogenin</p> Signup and view all the answers

    Which type of connective tissue is found in the walls of large arteries, trachea, and vocal cords?

    <p>Elastic Connective Tissue</p> Signup and view all the answers

    What causes the lipid to appear black when preserved and stained with osmium tetroxide?

    <p>Storing excess energy in the form of triglycerides</p> Signup and view all the answers

    What is the role of UCP1 in brown adipocytes?

    <p>Allowing protons to flow across the inner mitochondrial membrane</p> Signup and view all the answers

    What is the primary function of elastic connective tissue?

    <p>Allowing structures to stretch and recoil</p> Signup and view all the answers

    What type of cells produce reticular fibers?

    <p>Reticulocytes (modified fibroblasts)</p> Signup and view all the answers

    What is the primary function of brown adipose tissue?

    <p>To cause heat production and warm the blood without shivering</p> Signup and view all the answers

    What is the primary function of white adipose tissue?

    <p>To store triglycerides from dietary fats</p> Signup and view all the answers

    What enables protons to flow across the inner mitochondrial membrane in brown adipocytes?

    <p>Uncoupling protein 1 (UCP1)</p> Signup and view all the answers

    Where is brown adipose tissue mainly concentrated in newborns?

    <p>Neck, back, and shoulders</p> Signup and view all the answers

    What causes the lipid to appear black when preserved and stained with osmium tetroxide?

    <p>Adipocytes containing lipid droplets</p> Signup and view all the answers

    (In) White adipose tissue, where are other organelles located within the adipocytes?

    <p>Near the nucleus or throughout the ring of cytoplasm</p> Signup and view all the answers

    What type of cells produce reticular fibers?

    <p>Fibroblasts</p> Signup and view all the answers

    (In) White adipose tissue, where is adipose predominantly composed?

    <p>'Empty' spaces in small clumps</p> Signup and view all the answers

    (In) Loose Connective Tissue Aerolar, where is it found?

    <p>'Empty' spaces beneath all epithelia</p> Signup and view all the answers

    (In) Adipose tissue, what is the role of VLDL (very low density lipoprotein)?

    <p>Transporting dietary fats into adipocytes</p> Signup and view all the answers

    What is the primary function of brown adipocytes?

    <p>Heat generation</p> Signup and view all the answers

    What is the role of UCP1 in brown adipocytes?

    <p>Heat generation</p> Signup and view all the answers

    Where is brown adipose tissue predominantly concentrated in newborns?

    <p>Along the spine</p> Signup and view all the answers

    What initiates heat production by stimulation of adipocytes in hibernating animals and newborn humans?

    <p>Increased cell metabolism</p> Signup and view all the answers

    What is the primary function of elastic connective tissue?

    <p>Resistance to stress in one direction</p> Signup and view all the answers

    Where are reticular fibers mainly found?

    <p>&quot;In the stroma of hematopoietic and lymphoid organs&quot;</p> Signup and view all the answers

    Which type of connective tissue is found in the walls of large arteries, trachea, and vocal cords?

    <p>&quot;Elastic Connective Tissue&quot;</p> Signup and view all the answers

    "What causes the lipid to appear black when preserved and stained with osmium tetroxide?"

    <p>&quot;Fatty acids being metabolized&quot;</p> Signup and view all the answers

    "What is the source of dietary fats brought to adipocytes?"

    <p>Fatty acids from TG breakdown</p> Signup and view all the answers

    What is the function of brown adipose tissue?

    <p>Heat production and warming the blood without shivering</p> Signup and view all the answers

    Where is connective tissue aerolar found?

    <p>Beneath all epithelia and between muscles</p> Signup and view all the answers

    What causes the lipid to appear black when preserved and stained with osmium tetroxide?

    <p>Presence of triglycerides</p> Signup and view all the answers

    What is the primary function of white adipose tissue?

    <p>Long term energy storage</p> Signup and view all the answers

    Where are reticular fibers mainly found?

    <p>In the walls of large arteries, trachea, and vocal cords</p> Signup and view all the answers

    (In) White adipose tissue, where are other organelles located within the adipocytes?

    <p>Near the nucleus or throughout the ring of cytoplasm</p> Signup and view all the answers

    What is the primary role of uncoupling protein 1 (UCP1) in brown adipocytes?

    <p>Allows protons to flow across the inner mitochondrial membrane, primarily producing heat instead of ATP</p> Signup and view all the answers

    What type of connective tissue is densely packed with seemingly randomly arranged collagen fibers?

    <p>Dense Irregular Connective Tissue</p> Signup and view all the answers

    Where is reticular connective tissue mainly found?

    <p>In the stroma of soft hematopoietic and lymphoid organs</p> Signup and view all the answers

    What is the main function of elastic connective tissue?

    <p>To provide resistance to stress in one direction</p> Signup and view all the answers

    Where is dense regular connective tissue typically found?

    <p>In tendons and ligaments</p> Signup and view all the answers

    What enables protons to flow across the inner mitochondrial membrane in brown adipocytes?

    <p><strong>UCP1</strong> in the inner mitochondrial membrane</p> Signup and view all the answers

    What initiates heat production by stimulation of brown adipocytes in hibernating animals and newborn humans?

    <p><strong>Increased cell metabolism</strong></p> Signup and view all the answers

    What do reticular fibers found in reticular connective tissue stain with?

    <p>Silver stain</p> Signup and view all the answers

    Which type of adipose tissue has a reduced capacity for thermostasis in newborns?

    <p>Brown Adipose Tissue</p> Signup and view all the answers

    What is the function of dense irregular connective tissue?

    <p>To provide resistance to unpredictable stresses</p> Signup and view all the answers

    Study Notes

    Connective Tissue

    • Loose Connective Tissue Areolar is found beneath epithelia, around blood vessels, and in the nervous tissue.
    • Reticular fibers are mainly found in reticular connective tissue, which stains with silver.
    • Reticular fibers are produced by fibroblasts.
    • Reticular connective tissue is mainly found in the liver, spleen, and lymph nodes.

    Adipose Tissue

    • White Adipose Tissue constitutes around 20% of body weight in men.
    • White Adipose Tissue is primarily composed of unilocular adipocytes with a large central lipid droplet, surrounded by a thin layer of cytoplasm with few organelles.
    • The primary function of White Adipose Tissue is to store energy in the form of lipids.
    • The primary source of dietary fats brought to adipocytes is chylomicrons and VLDL (Very Low-Density Lipoprotein).

    Brown Adipose Tissue

    • Brown Adipose Tissue is mainly concentrated in the interscapular region of newborns.
    • The primary function of Brown Adipose Tissue is to produce heat by non-shivering thermogenesis.
    • Uncoupling Protein 1 (UCP1) enables protons to flow across the inner mitochondrial membrane in brown adipocytes, producing heat.
    • Norepinephrine initiates heat production by stimulating brown adipocytes in hibernating animals and newborn humans.

    Staining and Structure

    • Lipid appears black when preserved and stained with osmium tetroxide due to the high electron density of osmium.
    • Dense Regular Connective Tissue is typically found in tendons and ligaments, and has collagen fibers arranged parallel to each other.
    • Dense Irregular Connective Tissue is found in the walls of large arteries, trachea, and vocal cords, and has seemingly randomly arranged collagen fibers.
    • Elastic Connective Tissue has the primary function of allowing for stretch and recoil in tissues such as skin, lungs, and arteries.

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    Description

    Test your knowledge of loose connective tissue types - areolar and adipose. Learn about the characteristics and locations of these tissues in the body.

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