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
Urinary System
| Question | Answer |
|---|---|
| 3 functions of urinary system: | 1. excretion=removal 2. Elimination=discharge 3. Homeostatic regulation=balance |
| What is the renal corpuscle consisted of? What does it do? | - Bowmans capsule & glomerulus; filtration |
| Afferent arteriole: Efferent arteriole: | - Afferent: presents nephron with blood to clean - Efferent: drains from glomerulus; doubles back |
| What do podocytes do? | - they have little feet (inside Bowmans capsule) - filtration slits allows blood to exit and enter |
| Mesangial cell: | - controls diameter and rate of capillary blow flow |
| What is the descending loop permeable to in the renal tubule? | - water |
| What is the ascending loop permeable to in the renal tubule? | - salt |
| What does the proximal convolute tubule (PCT) do? | - reabsorbs |
| Nephron Loop of Henle: | - Water and salt are absorbed by ascending and descending |
| What does the distal convolute tubule (DCT) do? | - secrets ions, acids, drugs, and toxins - controls |
| Where is the Junta Glomerular cell at? | -at the split of the afferent and efferent arteriole |
| Collecting system: | - determines final osmotic concentration and volume of urine - controls water and salt content |
| Collecting duct: Papillary duct: | - nephron ends where DCT empties into collecting tubule - all ducts empty into papillary ducts, emptying into minor calyx |
| What is the goal of urine? | - to maintain homeostasis |
| What is filtration based on? | - size!!! |
| Ultrafiltration barrier consists of: | 1. fenestrated epithelium: lets most things through except RBC 2. basement membrane 3. Filtration slits of podocytes |
| Glomerular hydrostatic pressure: | - blood forced into small efferent arteriole leaving glomerulus - creates lots of resistance |
| Bowman's Capsular hydrostatic pressure: | - pressure pushing back into glomerulus from Bowman's capsule - opposes the hydrostatic pressure |
| Colloid osmotic pressure: | - resulting from presence of suspended proteins |
| Net hydrostatic pressure: | - differences between the two pushing forces - hydrostatic pressure wins every time! |
| Net filtration pressure: | - avg pressure forcing water and dissolved material out of capillaries and into capsular space - problems with this disrupt kidney function |
| Glomerular filtration rate: | - amount of filtrate kidneys produce each minute |
| Hormone regulation are by which two things: | 1. Renin-angiotensin-aldosterone system (RAAS) - Keeps water, increases BP 2. Natriuretic peptides - throws water out, lowers BP |
| Natriuretic hormones: | - released by heart in response to stretching walls due to high blood volume |
| Urine: | - collecting duct - 95% water |
| Micturation: | - voiding of urine - ext. sphincter relaxes, detrusor muscle contracts |
Created by:
madelineyork
Popular Anatomy sets