Biology [1 Mark Question Answer]

In the cortex of Kidney.

Medulla of Kidney.

Along the posterior abdominal wall on either side of the vertebral column.

It lies in the pelvic of the abdomen.

Excretion of waste materials from the body.

Excretion by eliminating extra water and salts.

Absorption of water from glomerular filtrate.

Regulates micturition.

Filtration of blood

Water reabsorption

Ultra filtration.

Collection of blood from hind limbs.

Supply blood to hind limbs.

Collection of blood from the kidneys, (deoxygenated blood).

Supply of blood to the kidneys, (oxygenated blood).

Secretion of hormones.

Passage for urine and sex cells.

Storage of urine.

Transfer of urine from kidneys to bladder.

Reabsorption

It is the mechanism by which the osmotic pressure is maintained and regulated between the body cells and the intercellular fluid by taking in the fluid or by giving out excess of fluid in the cell.

The ureter carries urine from the kidneys to the urinary bladder.
The urethra carries urine from the urinary bladder to the outside of the body.

Urine is yellow in colour due to the presence of a pigment urochrome, formed due to breakdown of haemoglobin of old R.B.Cs.

Hypertonic

Excretion is the removal of all harmful and unwanted products (specially the nitrogenous – products) from the body of living beings.

Excretion

Renal arteries

Afferent arteriole

Renal corpuscle

Hilus

Medulla

Nephrons

The organ which produces urea. - Liver

Kidneys

Ureter

Urochrome, bilirubin and biliverdin

Uric acid and water

Protein, acetone, creatinine

Urea

Urea, uric acid

Kidney