Download Anatomy and Physiology 2211K

Anatomy and Physiology
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Lecture Five
Slide 2 – Urinary system
Slide 3 – Urinary system’s function – filtering the blood
Slide 3 – Urinary system’s function – regulation of blood volume
Slide 3 – Urinary system’s function – regulation of ions
Slide 6 – Urinary system’s function – pH regulation
Slide 7 – Urinary system’s regulation - hormonal
Slide 8 – Urinary system’s regulation – Vitamin D
Slide 9 - Kidneys
Slide 10 - Nephron
Slide 11 – Histology of the nephron (glomerulus)
Slide 12 – Histology of the nephron (Bowman’s capsule)
Slide 13 – Histology of the nephron (Proximal convoluted tubule)
Slide 14 – Histology of the nephron (distal convoluted tubule)
Slide 15 – Histology of the nephron – juxtaglomerular apparatus
Slide 16 – Blood flow of the nephron and the kidneys
Slide 17 – Ureter and the urinary bladder
Slide 11 – urine formation
Slide 19 – Urea cycle
Slide 20 – Uric acid production
Slide 21 – Renal filtration
Slide 22 – Renal fraction
Renal plasma flow rate - the actual flow of plasma reaching
the kidneys is equal to the renal blood flow rate multiplied by the
portion of the blood that is made up of plasma – which is
approximately 55%
1176mL/min x 0.55 = 646 mL plasma /min
Filtration fraction – the actual part of the plasma that is being
filtered through the glomerulus and the renal capsule. Filtration
fraction averages 19% of the plasma flowing through the
kidneys
646 mL plasma/min x 0.19 = 123.5 mL plasma per minute
Slide 23 – Urine formation - glomerulus
Slide 23 – Filtration pressure
Slide 23 – reabsorption – proximal convoluted tubule
Slide 25 – Reabsorption – loop of Henle
Slide 26 – Ascending loop of Henle
Slide 26 – reabsorption – distal convoluted tubule
Slide 28 – Urine concentration