NEET BIOLOGY

ECOLOGY

EXCRETORY PRODUCTS AND THEIR ELIMINATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Identify the correct statement(s) regarding Ultrafiltration in the kidneys.
A
Occurs in the Bowmans capsule
B
Is when molecules of water, protein and glucose pass out of the blood
C
Is when molecules of water, glucose and salts pass out of the blood
D
Is when small molecules pass out of the blood and are excreted from the body.
E
Is controlled by a hormone called ADH
Explanation: 

Detailed explanation-1: -Ultrafiltration is the removal of fluid from a patient and is one of the functions of the kidneys that dialysis treatment replaces. Ultrafiltration occurs when fluid passes across a semipermeable membrane (a membrane that allows some substances to pass through but not others) due to a driving pressure.

Detailed explanation-2: -Even though glucose enters the kidney during ultrafiltration, it is then all reabsorbed back into the bloodstream. This process is called selective reabsorption and happens in the proximal convoluted tubule. It involves active transport to ensure every glucose molecule is returned back to the bloodstream.

Detailed explanation-3: -Ultrafiltration: Blood enters the glomerulus under pressure because the efferent arteriole is very narrow. Due to that pressure, it undergoes filtration, which is called ultrafiltration. Most of the particles get filtered; that is why it is called ultrafiltration.

Detailed explanation-4: -The process of ultrafiltration takes place in the Bowman’s capsule of kidney.

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