Human Anatomy: Kidneys
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Questions and Answers

Which organ is found on the superior surface of the kidneys?

  • Spleen
  • Adrenal glands (correct)
  • Pancreas
  • Thyroid
  • Where is the hilus of the kidney located?

  • On the lateral surface
  • On the posterior surface
  • On the superior surface
  • On the medial surface (correct)
  • What surrounds the kidneys to cushion them and prevent disturbance to their function?

  • Renal fat pad (correct)
  • Renal cortex
  • Renal sinus
  • Perirenal fat
  • What structure attaches the kidneys and the renal fat pad to the abdominal wall?

    <p>Renal fascia</p> Signup and view all the answers

    What is the function of the renal capsule?

    <p>Enclose the kidney in dense fibrous tissue</p> Signup and view all the answers

    In relation to the inferior vena cava, where is the abdominal aorta located?

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

    Which region of the kidney is a darker reddish-brown area?

    <p>Renal medulla</p> Signup and view all the answers

    What structures in the medulla of the kidney are cone-shaped?

    <p>Renal pyramids</p> Signup and view all the answers

    What is the approximate weight of a typical adult kidney?

    <p>125g</p> Signup and view all the answers

    Which part of the kidney has extensions called medullary rays reaching into the cortex?

    <p>Renal medulla</p> Signup and view all the answers

    Study Notes

    Kidney Location and Structure

    • Kidneys are bean-shaped organs located in the dorsal part of the abdomen, retroperitoneally, behind the stomach and liver.
    • The right kidney is situated slightly lower than the left.
    • The hilus of the kidney is on its medial surface, where the ureter, renal blood vessels, and nerves enter/exit.
    • Kidneys are surrounded by the renal fat pad, which cushions them and prevents disturbance to normal kidney function.
    • The renal sinus is a cavity that opens into the area around the hilum.
    • Renal fascia, a thin layer of connective tissue, attaches the kidneys and renal fat pad to the abdominal wall.

    Anatomy of the Kidney

    • Each kidney is enclosed by a renal capsule composed of dense fibrous connective tissue.
    • A typical adult kidney is approximately 10 cm (4 in.) in length, 5.5 cm (2.2 in.) in width, and 3 cm (1.2 in.) in thickness.
    • Each kidney weighs around 150g (5.25 oz).
    • The outer region, the cortex, is a light color.
    • The renal medulla, a darker reddish-brown area, surrounds the renal sinus.
    • The medulla has cone-shaped renal pyramids with extensions called medullary rays reaching into the cortex.
    • Renal columns, extensions of the cortex, separate the renal pyramids.
    • Adrenal glands, endocrine organs, are located on the superior surface of the kidneys.
    • The abdominal aorta is to the left of the inferior vena cava.

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    Description

    Learn about the anatomy and positioning of the human kidneys, including details about their location in the abdomen, the structure of the hilus, and the surrounding renal fat pad.

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