Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Lab exercise 40
Anatomy of the Urinary System
| Question | Answer |
|---|---|
| The kikdney is referred to as an excretory organ because it excretes..? | nitrogenous wastes. |
| The kidney is a major homeostatic organ because it maintains the ....? | electrolyte, acid-base, and fluid balance of the blood |
| Urine is continuously formed by the structural and functional units of the kidneys, the...? | nephron |
| From the nephron is routed down the ureter by the mechanism of ....? | paristalsis |
| from ureters the urine goes....? | to a storage organ called the bladder. |
| In the male the urethra is how long? | 20 centimeters long and transports both urine and sperm. |
| The female urethra is how long? | 4 centimeters long and transports only urine. |
| Micturation | Voiding or emptying the bladder. Has both voluntar and involuntary components. |
| The bladder's voluntary sphincter is the....? | external sphincter. |
| incontinence | the inability to control the external sphincter of the bladder. |
| What is the function of the fat cushion that surrounds the kidneys in life? | Perirenal fat capsules anchor the kidneys to the dorsal body will in a retroperitoneal position & cushion it against blow. |
| Ptosis | Kidneys are less securely anchored and drop to a more inferior position |
| fibrous capsule | smooth membrane, tightly adherent to the kidney surface. (Gross internl anatomy of the pig or sheep) |
| medulla | portion of the kidney containing mostly collecting ducts (Gross internal anatomy of the pig or sheep) |
| cortex | portion of the kidney containing the bulk of the nephron structures (Gross internal anatomy of the pig or sheep) |
| renal pelvis | basinlike area of the kidney, continuous with the ureter. (Gross internal anatomy of the pig or sheep) |
| minor calyx | a cup-shaped extension of the pelvis that encircles the apex of a pyramid (Gross internal anatomy of the pig or sheep) |
| renal column | area of cortical tissue running between the medullary pyramids (Gross internal anatomy of the pig or sheep) |
| Explain why the glomerulus is such a high-pressure capillary bed. | 1) The bed is fed and drained by arterioles (high resistant vessels) 2) The afferent arteriole (feeder) is larger in diameter than the efferent arteriole (draining) |
| How does the high-pressure condition aid the glomerulus's function of filtrate formation? | The higher the capillary pressure, the more filtrate will be formed. |
| What structural modification of certain tubule cells enhances their ability to reabsorb substances from the filtrate? | Their posession of dense microvilli, especially the PCT cells |
| Explain the mechanism of tubular secretion, and explain its importance in the urine formation process. | 1) Blood plasma contains red-white blood cells, blood proteins, glucose, water, nitrogenious waste, and salts. 2) Glomerular filtrate contains everything blood plasma does without most of the blood proteins. |
| Define juxtaglomerular complex (apparatus) | Region of nephron that plays an important role in forming concentrated urine. Consists of juxtaglomerular and macula densa cells of the DCT. |
| What is important functionally about the specialized epithelium (transitional epithelium) in the bladder? | They have ability to slide over one another, thus decreasing the thickness of the mucosal layer as the bladder fills stretches to accommodate the increased urine volume. |
Created by:
pkts68