Urinary System
| Description: | Anatomy and Exams |
| Category: | Radiology |
| Created by: | sr4095 on 2009-01-09 |
| Question | Answer |
| The urinary system consist of: | two kidneys, two ureters, one bladder and one urethra |
| The ______ _______ can be used interchangeably with urinary system. | excretory system |
| What are two terms meaning related to kidneys? | nephro- and renal |
| These glands sit above the kidneys and secrete epinephrine and cortical hormones. | supraarenal or adrenal glands |
| What is dialysis? | provides artificial replacement for the kidneys due to renal failure |
| Name some functions of the urinary system. | remove waste from blood; maintain fluid and elecyrolyte balance; secreting substances that affect blood pressure |
| How much urine is excreted daily? | 1-2 liters |
| On what border of the kidney is the hilum located on? | medial concave border |
| The right kidney is slightly longer and narrower, while the left kidney is slightly lower due to the placement of the liver. T/F | false - left kidney is slightly long and narrower while the right kidney is lower due to the placement of the liver |
| How do the kidneys lie? | oblique plane 30 degrees anteriorly toward the aorta |
| The kidneys extend from about _____ to ____. | T12 to L3 |
| In what type of patient do the kidneys lie at the highest level? | hypersthenic |
| During respiration the kidneys move about ____. From supine to upright the kidneys drop about _____. | 1"; 2" |
| Protective outer covering made up of connective fibrous tissue. | Renal capsule |
| Renal cortex | outer layer of renal tissue |
| What surrounds the kidneys and holds them in place? | adipose capsule |
| Inner layer of renal tissue | Renal medulla |
| Renal pyramids | composed of 8-15 cone-shaped segments of collecting tubules. |
| The Renal pyramids are located within the ____ ______. | Renal medulla |
| Extensions of the cortex between renal pyramids. | Renal columns |
| Nephron | The essential microscopic component of the kidney. |
| What are the two parts of the nephron? | Renal corpuscle and renal tubule |
| The _________ and the _______ make up the renal corpuscle. | bowman's capsule and the glomerulus |
| Cluster of blood capillaries from renal artery. | Glomerulus |
| The kidneys ______ is the nephron, the functional part of an organ in the body. | parenchyma |
| Double-walled membranous cup. | Glomerular capsule or bowman's capsule |
| What attaches the kidnesy to the diaphragm and peritoneum? | renal fascia |
| The __________ are vessels that enter the glomerular capsule while the ________ are vessels that exit the capsule. | afferent arterioles; efferent arterioles |
| What is the function of the glomerulus? | filter for blood; allowing fine particles and water to pass into the capsule |
| What are the three parts of the renal tubule? | Proximal convoluted tubule, loop of henle, distal convoluted tubule |
| Distal convoluted tubule opens into the ________. | collecting ducts |
| What are the three processes involved in the secretion of urine in the nephron? | filtration, reabsorption, secretion |
| Branches of afferent arterioles and efferent arterioles that form networks around the renal tubules. | Peritubular capillaries |
| Filtration | movement of water and solutes from blood plasma in glomerlus (blood cleaning) |
| Water reabsorbed from tubules back into the blood via the peritubular capillaries. What is taking place? | reabsorption |
| Where is water reabsorbed at? | peritubular cappilaries |
| Selective reabsorption | enough sodium chloride and glucose are reabsorbed to meet body requirements |
| Secretion | solutes that are not required by the body are secreted in the tubules. |
| Name some end products that are secreted by the body. | creatine, urea |
| BUN | blood urea nitrogen |
| What is the normal range for BUN? Creatine? | BUN 0.6-1.0Creatine 5-21 |
| What value of BUN can be an indication of kidney disfunction? | 65 or greater |
| What is an abnormal value for creatine? | 1.6 or greater |
| What substance is secreted to keep a balance in blood pressure when it increases or decreases? | renin |
| What part of the nephron secretes renin? | distal convoluted tubule |
| What chemical causes the blood compartment to constrict, which will raise BP? This same chemical will help to release a cortical hormone that will cause more absorption of salt and water to ease BP. | angiotensin |
| The collecting ducts open at the ______ ______ and drain into the ______ _______. | renal papilla; minor calyx |
| Cup shaped stems that enclose one or more papilla. | Calyces |
| Minor calyces unite to form _____ ______. | major calyces |
| Where does the renal pelvis lie? | within the hilum |
| Renal sinus | central cavity; fat filled space surrounding renal pelvis and calyces |
| Nipple like end of a renal pyramid | renal papilla |
| The renal pelvis is formed by the ________. | united major calyces |
| Longitudinal slit in medial border for transmission of blood vessels, nerves, lymphatic vessesl, and ureter. | Hilum |
| Antidiuretic hormone that is produced by the pituitary gland andstimulates reabsorption of water. | Vasopressin |
| What is the final end product of protein metabolism? | urea |
| Crystalline substance found in blood and muscle. If there are increased amounts of this substance it can cause renal failure. | creatinine |
| Renal Pelvis | proximal, funnel shaped portion of the ureter |
| Musculomembraneous tube that passes from the kidneys to the urinary bladder. | Ureter |
| Where do the ureters enter on the urinary bladder? | Enters posterolateral surface of bladder |
| What is the function of the ureter? | to convey urine from the kidneys to the bladder |
| Urinary bladder | Musculomembranous sac that serves as a reservoir for urine. |
| The bladder is located _______ and ______ to the pubic symphysis. | posterior; superior |
| Trigone | triangular area of bladder base between three openings |
| What is another term used to describe urination? | micturition |
| How long is the ureter? | 10-12 inches long |
| Conveys urine outsideof the body | urethra |
| In females the bladder is located _____ to the vaginal canal. In males and females the bladder is located ______ to the rectum. | anterior; anterior |
| How many openings are there in the bladder? | three - two for ureters and one for internal urethral orifice |
| How long is the urethra in females? males? | 1.5" females; 7-8" in males |
| Prostate | small glandular body surrounding the proximal part of the male urethra |
| What other body system is the prostate apart of? | reproductive system |
| BNO | bladder neck obstruction |
| BPH | Benign Prostate Hyperplasia |
| This procedure is done to to deal with patients with an enlarged, benign prostate. | Transurethral Resection of the Prostate |
| Where does the prostate attach to? | The inferior surface of bladder |
| Enalarge not cancerous prostate | Benign Prostate Hyperplasia |
| What is the path of fluid through the kidney? | SEE NOTES |
| Blockage at the base of bladder that prevents flow of urine. | Bladder neck obstruction |
| TURP | Transurethral Resection of the Prostate |
| Renal agenesis | failure of one or both of thekidneys to develop |
| AKA pelvic kidney; kidney does not ascend as it should and remains in the pelvic area. | ectopic or pancake kidney |
| oliguria or anuria | decreased or absent of the production of urine |
| ischuria | lack of ability to urinate |
| uremia | illness accompanying kidney failure |
| kidney stone caused by bacterial infection. | staghorn calculus |
| Floating kidney or renal prosis; kidney drops down into the pelvis when the patient stands. | nephroptosis |
| Inflammation of bladder | cystitis |
| abnormal concretion ofmineral salts, often called a stone | calculus |
| carcinoma bladder | malignant new growth located in the bladder |
| Duplicate Collecting System | two renal pelvi and or utereters from the same kidney |
| Fusion of the kidneys, usually at the lower poles | Horseshoe kidney |
| Fistula | abnormal communication between two organs |
| Glomerulonephritis | inflammation of capillary loops in the glomeruli of the kidney |
| Distension of the renal pelvis and calyces with urine. | hydronephrosis |
| Polycystic kidney | formation of many cyst within a kidney |
| Inflammation of the kidney and renal pelvis | pyelonephritis |
| Increased blood pressure to the kidneys | Renal hypertension |
| Renal obstruction | prevention of normal flow of urine |
| narrowing or contraction of a passage | Stenosis |
| Uterocele | ballooning of the lower end of the ureter into the bladder |
| Vesicoureteral reflux | backward flow of urine from bladder into the ureters |
| What is the purpose of contrast studies of the urinary system? | To demonstrate the renal parenchyma |
| Imaging of the renal drainage and collecting systems. | Urography |
| Retrograd urography is where the contrast enters the kidneys in the normal direction of flow. T/F | False- Antegrade urography is where contrast enters the kidney in the normal direction of flow. |
| Give examples of a antegrade urography. | Percutaneous Antegrade urography; Intravenous Urography (IVU); Pylographt; Nephrotomography; Nephrourography |
| Which exam is the only one that demonstrates function and structure of entire urinary system? | Intraveous Urography |
| Contrast is administered through percutaneous puncture of the renal pelvis. | Percutaneous Antegrade Urography |
| Pyelography | demonstration of renal pelvis and calyces |
| Retrograde urography | Contrast enters against the normal flow either by ureteral or urethral catherization |
| Give examples of regrograde urography. | Cystography; cystoureterography |
| Radiological visualization of the kidney by the blurring of unwanted anatomy after introduction of a contrast medium. | Nephrotomography |
| Nephrourography | imaging of the kidneys and ureters |
| What is the term used to describe a bladder exam? | cystography |
| Cystoureterography | ureters and bladder exam |
| What kind of contrast media is less likely to cause adverse reactions? | Nonionic iodinated media |
| Within ______ a reaction can occur after injection of contrast media | 5 mins |
| What equipment must be available incase of an emergency? | crash cart, O2 suction, benedryl, epinephrine |
| What are some examples of mild adverse reactions to contrast? | sensation of warmth, metallic taste, sneezing, flushing, urdicaria |
| What can help retard the flow of urine into the bladder and ensure filling of renal pelvis and calyces? | compression (centered over the level of the ASIS) |
| What films are taken for an IVU (HMC protocol)? | Scout KUB, 1 min. nephrogram (if patient has hypertension must do a 2 and 3 min. film), 5 min. KUB, 10 min. prone KUB, 10 min. obliques (RPO,LPO), 15 min. axial bladder, 15 min. oblique bladder (RPO,LPO), Upright post void KUB |
| Which position is best to demonstrate the uteropelvic junction in a nephrotomography? | dorsal decubitus |
| Where is retrograde urogrphy performed? | in the operating room |
| What are some examples of moderate adverse reactions to contrast? | nausea, vomiting, itching, edema |
| What are the two types of cystograms? | VCUG - voiding cystourethrogram and a non-voiding |
| Which cystogram is done to see amount of urine exiting bladder? Which is done for leakage? | VCUG; Non-voiding |
| What position would provide the same result as the compression band? | 15 degree trendelenburg position |
| What are some severe examples of adverse reactions to contrasst media? | anaphylactic shock, cardiac or respiratory distress |
| What films are taken for a cystogram (HMC protocol)? | Scout KUB, AP bladder, Oblique bladder (RPO,LPO), 10 min. delayed AP KUB,If voiding DR. will take spot films of drainign bladder, Post upright KUB |
| Endoscopic exam with a brodney gun, with the demonstration of the bladder neck and urethra. | male cystourethrography |
| Female Cystourethrography | VCUG - voiding cystourethrogram; metallic beacd chain investigates anatomic abnormalities responsible for incontinence due to stress |
| The kidneys are located __________. | Retroperitoneal |
|
What is the flow of fluid through the kidney? Blood enters kidney through the renal artery -> renal corpuscle -> renal tubules (proximal convoluted tubule, loop of henle, distal convoluted tubule) -> exits via the collecting ducts into renal pyramid -> and enters into the minor calyx via the renal papilla -> major calyx -> renal pelvis -> ureter -> bladder -> expelled out of bladder through urethra |
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