Biology : Excretory Products and their Elimination

A hormone, secreted by the endocrinal cells of duodenal mucosa which influences the releases of pancreatic juice is

• relaxin

• cholecystokinin

• Secretin

• Progesterone

Which type of white blood cells are concerned with the release of histamine and the natural anticoagulant heparin?

• Neutrophils

• Basophils

• Eosinophils

• Eosinophils

A person who is on a longer hunger strike and is surviving only on water, will have

• more sodium in his urine

• less amino acids in his urine

• more glucose in his blood 

• more glucose in his blood 

Angiotensinogen is a protein produced and secreted by

• macula densa cells

• endothelial cells (cells lining the blood vessels)

• liver cells

• liver cells

Which is common to kidney and skeleton in mammals?

• Cortex

• Medulla

• Pelvis

• Radius

Match the items given in Column I with those in Column II and select the correct option given below:

• a	b	c	d
  iv	v	ii	iii

• a	b	c	d
  iv	i	ii	iii

• a	b	c	d
  v	iv	i	iii

• a	b	c	d
  v	iv	i	ii

Urea synthesis occurs in

• kidney

• Liver

• Brain

• Muscles

Which of the following statements is correct?

• The ascending limb of loop of Henle is impermeable to water

• The descending limb of loop of Henle is impermeable to water

• The ascending limb of loop of Henle is permeable to water

The ornithine cycle removes two waste products from the blood in the liver. These products are

• CO₂ and urea

• ammonia and urea

• CO₂ and ammonia

• ammonia and uric acid

What will happen if the stretch receptors of the urinary bladder wall are totally removed?

• Urine will not collect in the bladder

• Micturition will continue

• Urine will continue to collect normally in the bladder

• Urine will continue to collect normally in the bladder