Physiology- Body fluid + kidneys

Created by joshArden 

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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

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