Forest of nephridia are present in
Options
(a) Pharyngeal region (b) Clitellar region (c) Anal region (d) None of these
Correct Answer:
Clitellar region
Explanation:
The number of metanephridia varies from 2000 – […]
Filtration pressure in human kidneys is about
Options
(a) 15 mm Hg (b) 70 mm Hg (c) 45 mm Hg (d) 55 mm Hg
Correct Answer:
15 mm Hg
Explanation:
Effective filtration pressure […]
Fastest distribution of some injectible material/medicine and with no risk of any kind can be achieved by injecting it into the
Options
(a) Muscles (b) Arteries (c) Veins (d) Lymph vessels
Correct Answer: […]
Excretory system of Ascaris lumbricoides is made up of
Options
(a) 4 cells (b) Many cells (c) One cell (d) Two cells
Correct Answer:
One cell
Explanation:
Ascaris has a ‘H’-shaped tubular excretory […]
ECG records
Options
(a) Electric current of the body (b) Potential differences. (c) Pulse rate (d) Quantity of blood pumped per minute
Correct Answer:
Potential differences.
Explanation:
ECG is the record of changes […]
Each human kidney has nearly
Options
(a) 10,000 nephrons (b) 50,000 nephrons (c) 1,00,000 nephrons (d) 1 million nephrons
Correct Answer:
1 million nephrons
Explanation:
Nephrons are morphological and physiological units of kidney. […]
During systole of ventricle
Options
(a) Blood enters the heart (b) Blood leaves the heart (c) Blood leaves the ventricle (d) Blood enters the heart
Correct Answer:
Blood leaves the ventricle
Explanation:
Systole […]
Columns of Bertini – in the kidney of mammals are formed as the extension of
Options
(a) Medulla into cortex (b) Cortex into medulla (c) Medulla into pelvis (d) Pelvis into ureter
Correct […]
Bowman’s capsule and glomerulus together constitute
Options
(a) Nothing (b) A nephron (c) Malpighian corpuscle (d) Nephric corpuscle
Correct Answer:
Malpighian corpuscle
Explanation:
Malpighian corpuscle (renal corpusle) consists of Bowman’s capsule and glomerulus.
Blood pressure increases and heart rate decreases in response to
Options
(a) Exercise (b) Haemorrage (c) Exposure to high altitude (d) Increased intracranial pressure
Correct Answer:
Increased intracranial pressure
Explanation:
With the increase […]
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