Physiology- Body fluid + kidneys
The average water content of a male is approx 10% of the body weight?
intracellular fluid forms approx 60% of total body fluid?
water is moved between intracellular and extracellular compartments by active pumps?
plasma forms approximatley 80% of volume of whole blood?
infants have a higher percentage of fluid content than the elderly?
changes in water and salt content in the body are detected by measuring changes in plasma osmolarity?
erythrocytes are classed as granulocytes?
erythrocytes are produced by the bone marrow?
thrombocytes are involved in clotting?
leukocytes are involved in the defence against infection?
the average life expectancy of a RBC is 300days?
anaemia can be caused by damage to bone marrow?
lymph nodes produce large numbers of lymphocytes?
the spleen is the largest mass of lymphoid tissue in the body?
kidneys recieve approx 5% of total cardiac output?
each kidney contains approx 10 million nephrons?
blood enters the glomerulus through an afferent arteriole?
blood leaves the glomerulus through a renal vein?
false= efferent arteriole
fluid passes from the blood to the glomerular space by osmosis?
the glomerular filtartion rate is approx 125ml/min?
plasma protein are actively secreted from the plasma into the urine?
glucose is secreted into the proximal convoluted tubule?
false- waste products are
the loop of henle dips down from the medulla into the cortex of the kidney?
False- from cortex into medulla
the loop of henle is responsible for maintaininng an osmotic gradient across the medulla of the kidney?
the distal convoluted tubule adjusts the sodium levels in the urine?
the water content of the urine is adjusted in the collecting duct?
water is absorbed in the collecting duct by the process of osmosis?
renin is released from the juxtaglomerular cells of the kidney?
renin converts angiotensinogen into angiotensin 1?
angiotensin converting enzyme is found in the stomach?
aldosterone stimulates sodium retention by the kidney?
ADH controls the sodium retention by the kidneys?
false- controls water retention
ADH is secreted by the pituitary gland?
ADH is secreted in response to a decrease in plasma osmolarity?
ADH decreases water reabsorbtion in the collecting duct?
urine production rate is approx 150ml/per min?
false- 1.5 litres per day
acidosis is a condition which plasma pH is greater than 7.8?
false= less than 7.4
metabolism is a major source of acids in the body?
blood bicarbonate is a important buffer for the plasma pH?
carbonic acid is important in the buffering of hydrogen ions by haemoglobin?
normal blood contains 24nm bicarbonate ions?
acidosis stimulates increased ventilation?
co2 is important in the excretion of hydrogen ions by the kidneys?
respiratory acidosis can be caused by pulmonary oedema?
diuretics can cause metabolic acidosis?