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    Urinary

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    adrianmanansala3360
    Urine

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    Urinary

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    adrianmanansala3360
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    Urine

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    urinary

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    Urine

    Copyright:

    © All Rights Reserved
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    8 views2 pages

    Urinary

    Uploaded by

    adrianmanansala3360
    Urine

    Copyright:

    © All Rights Reserved
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    of 2

    Name :Manansala, Hazel Date : December 1,2022

    Course/Year/Sec: BSN 1 YA-23 Teacher: Dr.Dorlyn Billones

    EXERCISE NO. 13

    THE EXCRETORY SYSTEM

    GIO : Study the organs involved in the excretory system.

    SIO.

    1. Identify the parts and functions of the nephron.

     The functional unit of the kidney is the nephron. Each kidney consists of
    millions of nephron which plays a significant role in the filtration and
    purification of blood. The nephron is divided into two portions, namely, the
    glomerulus and the renal tubule and helps in the removal of excess waste
    from the body.

    2. Explain the formation of dilute versus concentrated urine.

     When water intake is large enough to dilute blood plasma, a urine more dilute
    than blood plasma is produced; when water intake is so small that blood
    plasma is concentrated, a urine more concentrated than blood plasma is
    produced.

    3. Define micturition and describe the micturition reflex.

     The micturition reflex is a bladder-to-bladder contraction reflex for which the


    reflex center is located in the rostral pontine tegmentum (pontine micturition
    center: PMC). There are two afferent pathways from the bladder to the brain.
    One is the dorsal system and the other is the spinothalamic tract

    4. Draw and label the following parts of the kidney

    a. renal cortex

    b. medullary pyramids

    c. renal columns of Bertini

    d. minor calyces

    e. major calyces
    f. renal pelvis

    5. Enumerate the different anatomical constrictions of the ureter.

     At the pelvi- uretic junction which is at the level of lower pole of kidney ( at the
    level of tip of transverse process of 2nd lumabr vertebra).
     At the pelvic brim 9 at sacroiliac joint).
     At ureteo- vesical junction, the point where ureter pierces the urinary bladder (
    at the level of ischial spine).

    6. Illustrate the different parts of the urinary bladder and urethra in the male.

    7. Label the parts of the nephron and with the use of colored arrows, identify the

    site of filtration (black), reabsorption (blue) and secretion (red).

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