Anatomy of Abdomen: Testes and Epididymis
16 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the shape of the testes?

  • Rectangular
  • Cylindrical
  • Ovoid (correct)
  • Spherical

    • What is the function of the testes?

  • Producing hormones only
  • Producing both sperms and hormones (correct)
  • Producing sperms only
  • Storing urine

    • What is the tough fibrous outer surface of the testes called?

  • Tunica albuginea (correct)
  • Mediastinum testis
  • Tunica vasculosa
  • Tunica vaginalis

    • What is the purpose of the fibrous septa in the testes?

    <p>To divide the testes into lobules</p> Signup and view all the answers

    What is the number of efferent ductules that arise from the rete testis?

    <p>12-14</p> Signup and view all the answers

    What is the function of the appendix testis?

    <p>A remnant of the paramesonephric duct</p> Signup and view all the answers

    What is the structure that the efferent ductules pass into?

    <p>Head of the epididymis</p> Signup and view all the answers

    What is a possible complication of the appendix testis and appendix epididymis?

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

    What is the tunica vaginalis composed of?

    <p>Parietal and visceral layers with a cavity in between</p> Signup and view all the answers

    What is the function of the cavity of the tunica vaginalis?

    <p>To enable the testis to move freely in the scrotum</p> Signup and view all the answers

    What is the sinus of the epididymis?

    <p>A slit-like recess in the cavity of the tunica vaginalis</p> Signup and view all the answers

    To reach the testis from outside the body, which layers must be removed in order?

    <p>Skin, dartos fascia, external spermatic fascia, cremasteric muscle and fascia, internal spermatic fascia, parietal layer of tunica vaginalis, visceral layer of tunica vaginalis</p> Signup and view all the answers

    Where do the lymphatic vessels from the testes and epididymis drain into?

    <p>Right and left lumbar (caval/aortic) lymph nodes and pre-aortic lymph nodes only</p> Signup and view all the answers

    What is a characteristic of a varicocele?

    <p>A soft lumps, usually above the testicle, that feels like a bag of worms</p> Signup and view all the answers

    What is a potential consequence of malignant disease from the testis?

    <p>Spread to the lymph nodes at the root of the neck</p> Signup and view all the answers

    What is the location of the parietal layer of the tunica vaginalis?

    <p>Lining the internal spermatic fascia</p> Signup and view all the answers

    Study Notes

    Anatomy of the Abdomen: Testes and Epididymis

    Testes

    • Are paired ovoid reproductive glands that produce sperms (spermatozoa) and the testosterone hormone
    • Suspended in the scrotum by the spermatic cords, with the left testis usually suspended more inferiorly than the right testis
    • Have a tough fibrous outer surface called the tunica albuginea
    • Interior structure:
      • Tunica albuginea thickens into a ridge on its internal, posterior aspect as the mediastinum testis
      • Fibrous septa extend inward from the mediastinum, dividing the testis into 250 lobules
      • Each lobule contains 2-3 seminiferous tubules, which become straight tubules posteriorly and anastomose to form the rete testis
      • From the rete testis, about 12-14 efferent ductules arise and pierce the tunica albuginea, passing into the head of the epididymis

    Epididymis

    • Receiving ducts from the testis, with 12-14 efferent ductules
    • Located above the testis, with a small appendage called the appendix epididymis, which is a remnant of the mesonephric duct
    • May undergo torsion, causing acute pain

    Appendix Testis and Appendix Epididymis

    • Small appendages on the upper pole of the testis and epididymis, respectively
    • Remnants of the paramesonephric (Müllerian) and mesonephric ducts, respectively
    • May undergo torsion, causing acute pain

    Tunica Vaginalis

    • A double-layered peritoneal serous sac that invaginates the testis and epididymis anteriorly
    • Composed of parietal and visceral layers, with a cavity in between
    • The visceral layer is closely applied to the testis and epididymis, while the parietal layer lines the internal spermatic fascia
    • The cavity contains a small amount of fluid, enabling the testis to move freely in the scrotum
    • Sinus of the epididymis: a slit-like recess in the cavity of the tunica vaginalis, lying between the body of the epididymis and the posterolateral surface of the testis

    Arterial Supply, Venous Drainage, and Lymphatic Drainage

    • Not mentioned in detail in the provided text, but important for understanding the anatomy of the testes and epididymis

    Clinical Relevance

    • Hydrocele of the testes/hydrocele of the spermatic cord: a fluid-filled sac around the testis
    • Hematocele of the testes: a collection of blood in the tunica vaginalis
    • Torsion of the spermatic cord: a twisting of the spermatic cord, causing acute pain
    • Varicocele: an abnormal enlargement of the pampiniform venous plexus in the scrotum, which may be noticed as soft lumps above the testicle and can be palpated like a bag of worms
    • Malignant disease from the testis may spread to the lymph nodes at the root of the neck

    Studying That Suits You

    Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

    Quiz Team

    Related Documents

    Abdomen Anatomy: Testes & Epididymis PDF

    Description

    This lecture aims to cover the anatomy of the abdomen, specifically the testes and epididymis, including their parts, arterial supply, venous and lymphatic drainage, and innervation. It also covers related disorders such as hydrocele and hematocele.

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser