Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
12 Cards in this Set
- Front
- Back
|
Reabsorbment |
Pass through luminal membrane of tubule, cytosol, basolatereral membrane into interstitial fluid and diffuse through. Penetrate capillary wall and entre blood plasma. |
|
|
Urea |
50% excreted and 50% reabsorbed |
|
|
Vasopressin |
produced by hypothalamus, stored in posterior pituitary gland. Water deficit stimulates release, hypothalamic osmoreceptors monitor osmolarity of fluid. |
|
|
Ureter --> Bladder |
Gravity and peristaltic contractions. Internal urethral sphincter is involuntary, external urethral sphincter is voluntary. Micturition reflex initiated by stretch receptors |
|
|
Renin-angiotension-aldosterone system |
Kidney secretes rennin due to fall in ECF volume, antiotensinogen activated converting angiotensin I to angiotension II which stimulates aldosterone secretion. Increased Na+ absorption and K+ secretion. |
|
|
Afferent arteriole |
Goes from organs to the heart, wraps around tubules forming peritubular capillaries. Goes to arcuate vein. |
|
|
Efferent arteriole |
Arcuate artery becomes efferent arteriole. Becomes afferent before bowmans capsule. From the heart to organs. |
|
|
Tubule direction |
Bowmans capsule to proximal tubule to loop of henle to distal tubule to Collecting duct |
|
|
Aldosterone |
Produced just before collecting duct |
|
|
Glomerulus |
Cluster of capillaries, retains blood cells and plasma proteins. Capillary wall contains large pores. |
|
|
K+ and Na+ |
Secretion of K+ linked to absorption of Na+ Actively reabsorbed in proximal tube, actively secreted in distal and collecting tubule (Variable) |
|
|
Buffer |
Increased [H+] leads to increased excretion HCO3- transferred plasma when H+ reabsorbed Urinary buffers bind with H+ and are excreted |
