Samenvatting
Summary Physiology Basic Concepts Kidney
Summary of the kidney part of Physiology Basic Concepts
[Meer zien]Voorbeeld 4 van de 71 pagina's
Voorbeeld 4 van de 71 pagina's
In winkelwagengesponsord bericht van onze partner
Gekoppeld boek
Titel boek:
Auteur(s):
- Uitgave:
- ISBN:
- Druk:
3 beoordelingen
Door: diana09 • 4 jaar geleden
Door: nienkegalama • 6 jaar geleden
Door: BWertje • 7 jaar geleden
Voorbeeld van de inhoud
PHYSIOLOGY BASICCONCEPTS
Kidneys
Summary
Summary of the course ‘Physiology Basic Concepts’ second part; Kidneys.
All the lectures are in this summary.
Carlita Verhoef
carlitaverhoef@live.nl
, Physiology Basic Concepts | Carlita Verhoef
Inhoud
K01 Anatomy Urinary System ............................................................................................. 2
K02 Basic Concepts in Renal Physiology........................................................................... 8
K03 Regulation of renal plasma flow (RPF) and glomerular filtration rate (GFR) ........... 13
K04 Pt and Loop of Henle ................................................................................................. 17
K06 Distal Nephron ........................................................................................................... 21
K09 Osmoregulation ......................................................................................................... 27
K10 Volume Regulation .................................................................................................... 33
K12 Acid, Base, Buffers .................................................................................................... 39
K13 + K14 Acid-Base Regulation ..................................................................................... 42
K15 + K16 Potassium ....................................................................................................... 50
H01 Acid-Base Balance .................................................................................................... 60
H02 Volume regulation and osmoregulation .................................................................... 66
1
, Physiology Basic Concepts | Carlita Verhoef
K01 Anatomy Urinary System
The kidneys have some essential function;
Conserve body fluid and electrolytes and remove metabolic waste
Regulate water- and electrolyte balance, tissue osmolality, blood pressure, acid-base
balance
Function also as an endocrine organ: synthesis and secretion of erythropoietin (bone
marrow erythropoieses) and renin (blood pressure), causes activation of vitamin D
(Ca2+ metabolism)
The kidneys are high in the upper abdomen. The left kidney is a little bit higher in the upper
abdomen than the right one. This is caused by the liver, which is also on the right side. The
kidneys have no other relationship with other organs; this is why they are primary
retroperitoneal. The kidneys are surrounded by:
Perinephric fat; perirenal fat capsule = structural adipose tissue
Renal fascia; enclosing membranous layer, open inferiorly; also encloses the
suprarenal gland
Paranephric fat; pararenal fat body = retroperitoneal adipose tissue
The left renal artery is shorter than the right renal artery. The opposite holds for the vein. The
renal vein on the left side is longer, than on the right side because the right kidney is much
closer to the vena cava inferior.
Left renal vein: receives the left suprarenal vein and gonadal (testicular/ovarian) vein.
Clinical: renal vein entrapment syndrome; compression of the left renal vein between
the superior mesenteric artery anteriorly and abdominal aorta posteriorly.
The kidneys have a bean shaped, multilobes structure. They concave medially and
have a renal hilum (entrance). The renal hilum contains the vein (anterior), artery
(middle) and the renal pelvis (posterior). The renal pelvis is the urine collection system,
which transfers into the ureter. It also has autonomic nerves and lymphatic vessels.
The suprarenal gland is a separate organ that produces corticosteroids.
The fibrous capsule has 2 layers
(fibroblast, myofibroblasts); aids in
resisting volume and pressure
variations.
The kidney receives 25% of the
Cardiac Output. It is branched in 5
segmental arteries which are divided
in interlobular arteries. In the
medulla, it has an arcuate artery. In
the cortex; 90-95% of the blood is
present in the renal cortex.
2
, Physiology Basic Concepts | Carlita Verhoef
The nephron is the structural and functional unit of the kidney. It is situated in the cortex and
the medulla. The renal corpuscle (of malpighi) has two components; clomerulus and
Bowman’s capsule. The general organization of the nephron is as followed;
Proximal thick segment;
Proximal convoluted tubule (TC I)
Proximal straight tubule (TR I)
Thin segment
Thin part of the loop of Henle
Distal thick segment
Distal straight tubule (TR II)
Distal convoluted tubule (TC II)
The collecting tubule is outside of the nephron and contains the ductus colligens and
ductus papillaris. The thin segment is followed by a distal thick segment. This part goes to
the duct. On the distal convoluted tubule, less microvilli are present
Renal corpuscles;
Always in the cortex (cortical labyrinth and renal columns); subcapsular, intermediate
and juxtamedullary
Juxtamedullary nephrons have long loops of Henle*
Loop of Henle
Pyramidal part proximal straight tubule (TR I)
Thin segment
Pyramidal part distal straight tubule (TR II)
3
Voordelen van het kopen van samenvattingen bij Stuvia op een rij:
Verzekerd van kwaliteit door reviews
Stuvia-klanten hebben meer dan 700.000 samenvattingen beoordeeld. Zo weet je zeker dat je de beste documenten koopt!
Snel en makkelijk kopen
Je betaalt supersnel en eenmalig met iDeal, creditcard of Stuvia-tegoed voor de samenvatting. Zonder lidmaatschap.
Focus op de essentie
Samenvattingen worden geschreven voor en door anderen. Daarom zijn de samenvattingen altijd betrouwbaar en actueel. Zo kom je snel tot de kern!
Veelgestelde vragen
Wat krijg ik als ik dit document koop?
Je krijgt een PDF, die direct beschikbaar is na je aankoop. Het gekochte document is altijd, overal en oneindig toegankelijk via je profiel.
Tevredenheidsgarantie: hoe werkt dat?
Onze tevredenheidsgarantie zorgt ervoor dat je altijd een studiedocument vindt dat goed bij je past. Je vult een formulier in en onze klantenservice regelt de rest.
Van wie koop ik deze samenvatting?
Stuvia is een marktplaats, je koop dit document dus niet van ons, maar van verkoper ceverhoef. Stuvia faciliteert de betaling aan de verkoper.
Zit ik meteen vast aan een abonnement?
Nee, je koopt alleen deze samenvatting voor €4,49. Je zit daarna nergens aan vast.
Is Stuvia te vertrouwen?
4,6 sterren op Google & Trustpilot (+1000 reviews)
Afgelopen 30 dagen zijn er 77254 samenvattingen verkocht
Opgericht in 2010, al 14 jaar dé plek om samenvattingen te kopen