State the differences between the following. 1. Tubular reabsorption

1.	State the differences between the following. 1. Tubular reabsorption and Tubular secretion. 2. ADH and RAAS.
Answer» 1. Tubular reabsorption: The process of selective reabsorption of most of the useful substances from the glomerular filtrate in the renal tubule. Tubular secretion: It is the process of active secretion of certain substances such as Hydrogen ions, ammonia etc. from the blood into the lumen of the urinary tubules by the tubular epithelium during urine formation. 2. ADH: ADH is the hormone from posterior pituitary gland, makes the wall of the distal convoluted tube and collecting tubule permeable to water so that more water is reabsorbed. RAAS: Renin – Angiotensin – Aldosterone system increases the blood pressure by constricting arterioles and increases the blood volume by stimulating proximal convoluted tubule.

State the differences between the following. 1. Tubular reabsorption and Tubular secretion. 2. ADH and RAAS.

Answer»

1. Tubular reabsorption:

The process of selective reabsorption of most of the useful substances from the glomerular filtrate in the renal tubule.

Tubular secretion:

It is the process of active secretion of certain substances such as Hydrogen ions, ammonia etc. from the blood into the lumen of the urinary tubules by the tubular epithelium during urine formation.

2. ADH:

ADH is the hormone from posterior pituitary gland, makes the wall of the distal convoluted tube and collecting tubule permeable to water so that more water is reabsorbed.

RAAS:

Renin – Angiotensin – Aldosterone system increases the blood pressure by constricting arterioles and increases the blood volume by stimulating proximal convoluted tubule.

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