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45 terms

Physiology- Body fluid + kidneys

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The average water content of a male is approx 10% of the body weight?
False= 58%
intracellular fluid forms approx 60% of total body fluid?
True
water is moved between intracellular and extracellular compartments by active pumps?
False
plasma forms approximatley 80% of volume of whole blood?
false= 55%
infants have a higher percentage of fluid content than the elderly?
True
changes in water and salt content in the body are detected by measuring changes in plasma osmolarity?
True
erythrocytes are classed as granulocytes?
False
erythrocytes are produced by the bone marrow?
true
thrombocytes are involved in clotting?
true
leukocytes are involved in the defence against infection?
True
the average life expectancy of a RBC is 300days?
False- 100/120
anaemia can be caused by damage to bone marrow?
True
lymph nodes produce large numbers of lymphocytes?
False
the spleen is the largest mass of lymphoid tissue in the body?
false= GALT
kidneys recieve approx 5% of total cardiac output?
False- 20/25%
each kidney contains approx 10 million nephrons?
true
blood enters the glomerulus through an afferent arteriole?
true
blood leaves the glomerulus through a renal vein?
false= efferent arteriole
fluid passes from the blood to the glomerular space by osmosis?
false- pressure
the glomerular filtartion rate is approx 125ml/min?
true
plasma protein are actively secreted from the plasma into the urine?
false
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?
true
the distal convoluted tubule adjusts the sodium levels in the urine?
false
the water content of the urine is adjusted in the collecting duct?
True
water is absorbed in the collecting duct by the process of osmosis?
false= reabsorbed
renin is released from the juxtaglomerular cells of the kidney?
True
renin converts angiotensinogen into angiotensin 1?
true
angiotensin converting enzyme is found in the stomach?
false
aldosterone stimulates sodium retention by the kidney?
True
ADH controls the sodium retention by the kidneys?
false- controls water retention
ADH is secreted by the pituitary gland?
true
ADH is secreted in response to a decrease in plasma osmolarity?
false
ADH decreases water reabsorbtion in the collecting duct?
false
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?
true
blood bicarbonate is a important buffer for the plasma pH?
true
carbonic acid is important in the buffering of hydrogen ions by haemoglobin?
false
normal blood contains 24nm bicarbonate ions?
true
acidosis stimulates increased ventilation?
true
co2 is important in the excretion of hydrogen ions by the kidneys?
true
respiratory acidosis can be caused by pulmonary oedema?
true
diuretics can cause metabolic acidosis?
false