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Urinary lab guide

Urinary lab guide - Urinary System Lab Guide I Prelab...

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Urinary System Lab Guide I. Prelab Questions Name ___________________________________________ 1. Describe the location of the kidneys. 2. Describe the following structures: a. renal cortex b. renal pyramid c. renal column d. minor calyx e. renal pelvis 3. What is a nephron? 4. Describe the following: a. detrusor muscle b. rugae c. trigone 1
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II. Exercises: The objective of this lab is to learn urinary anatomy from: A. A short lecture on gross and microscopic urinary anatomy. B. Illustrations from this manual, your textbook, handouts, lab charts and the Anatomy and Physiology Coloring Book , if you wish to purchase it. C. Models: 1. Urinary System 2. Kidney 3. Nephron 4. Renal corpuscle D. Dissection of a pig kidney. E. A.D.A.M. Interactive Anatomy software. F. Use of microscope slides to learn urinary histology (optional). 1. Organs of the urinary system: Use figures 26.1 in your text and the urinary system model to reinforce your learning of the structures labeled on these figures. Identify the following structures: The kidneys (1) are bean shaped organs that form the waste product called urine . They are located in the upper lumbar region between the level of the twelfth thoracic and third lumbar vertebrae. The kidneys are sandwiched between the posterior abdominal cavity and the parietal peritoneum. This position is referred to as retroperitoneal. Each kidney is approximately 5” long, 2.5” wide, and 1” thick. Why is right kidney is slightly lower than the left? Blood enters the kidney through the renal artery (2) , and exits through the renal vein (3) . Urine passes from each kidney to the urinary bladder (4) through tubes called ureters (5) . The urinary bladder, located in the pelvic cavity, provides for temporary storage of urine. Urine exits the urinary bladder through a single tube called the urethra (6) . 2
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Figure 1. Urinary System Model 3
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2. The anatomy of the kidney: Use figure 26.3 in your text and the models of the kidney to identify the following structures: A fibrous renal capsule (7) encloses each kidney. The renal cortex (8) is the outer region of the kidney where most urine formation occurs. The cortex looks granular because of all of the blood vessels and nephrons in it. Deep to the cortex is the renal medulla (9) . The medulla consists of renal pyramids (10) . The kidney model shows the pyramids as dark, triangular structures with their bases bordering the cortex and their points (apices) pointing toward the center of the kidney. Pyramids are filled with urine collecting tubules; that is why they look striated. The point or apex of a pyramid is a renal papilla (11) . Cortical tissue extends inward between the pyramids to form renal columns (12) . Blood vessels pass through the columns to get to and from the cortex.
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Urinary lab guide - Urinary System Lab Guide I Prelab...

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