Renal System Flashcards
What is found in normal urine?
Water
Creatinine
Urea
H+, NH3
Na+, K+
Drugs (Anti-viral, diuretics)
What percentage of normal urine is water?
95-98%
What is found in pathologic urine?
Glucose
Protein
Blood
Haemoglobin
Leucocytes
Bacteria
If there is glucose in the urine what does it suggest?
Glucosuria
Diabetes
If there is protein in the urine what does it suggest?
Proteinuria
If there is blood in the urine what conditions does it suggest?
Erythrocytes
Haematuria
If there is haemoglobin in the urine what does it suggest?
Haemoglobinuria
What should urine look like?
Clear, light or dark amber dependant on hydration
What should urine taste like?
Acidic (pH 5-6) therefore not sweet - but pH is dependant on diet.
E.g., veggies have less protein than meat therefore vegetarians will have a higher pH than meat eaters
What does urine smell like?
Unremarkable smell (should smell like nothing)
What does pathological urine look like?
Golden , red, brown, blue
What does pathological urine taste like?
Sweet (if diabetes mellitus)
What does pathological urine smell like if there is an infection or tumour?
Rotten
What does pathological urine smell like if patient is ketosis/fasting, diabetic or chronic alcohol abuse?
Like fruits
What are the key components of the urinary system?
Diaphragm
Kidney
Ureter
Bladder
Urethra
How many kidneys do we have?
2
What gland sits on top of the kidneys?
Adrenal glands (left and right)
What percentage of body weight is the kidney?
0.4%
What percentage of blood flow do they kidneys receive?
25%
What is the KEY function of the kidney?
Regulation of composition and volume of body fluids - homeostasis.
Achieved by FILTERING THE BLOOD
What are the functions of the kidney?
Filter blood
Water homeostasis
Reabsorption of nutrients
Salt/ion homeostasis
Excretion of drugs
pH-regulation
Gluconeogenesis
Metabolism
Hormone production erythropoietin
How many L of plasma does the kidney filter per day?
180 L (of the 5L of blood in our body 3L of it is plasma so it is that 3L getting filtered about 60 times per a day).
What percentage of filtrate is reabsorbed?
99% (the remaining 1% becomes urine)
What supplies the kidneys with blood?
Renal arteries (takes blood from the heart to the kidneys)