HISTOLOGY
URINARY SYSTEM
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
1/5
|
|
|
1/3
|
|
|
1/2
|
|
|
3/4
|
Detailed explanation-1: -On an average, 1100−1200 ml of blood is filtered by the kidneys per minute which constitute roughly 1/5th of the blood pumped out by each ventricle of the heart in a minute.
Detailed explanation-2: -In a normal healthy adult, the heart beats 60-100 times in a minute. With each beat, the heart pumps 70 millilitres of blood out of the heart. It can move 5 to 7 litres of blood in one minute and 7600 litres per day. Hence about 70 ml of blood is pumped into the arteries during each heartbeat.
Detailed explanation-3: -Renal blood flow (RBF) of about 1200 ml/min is well maintained (autoregulated) at blood pressures of 80 to 180 mm Hg. The cortex requires about 80% of blood flow to achieve its excretory and regulatory functions, and the outer medulla receives 15%.