Difference between : Afferent arteriole and Efferent arteriole.
Afferent arteriole | Efferent arteriole |
$(1)$ Branch of renal artery which enters the Bowman's capsule is afferent arteriole. | $(1)$ Glomerulus branches unite and come out of Bowman's capsule to form efferent arteriole |
$(2)$ Its wall is thick. | $(2)$ It has thin wall. |
$(3)$ Its diameter is broad. | $(3)$ Its diameter is narrow. |
$(4)$ Blood flowing in it has more excretory substances. | $(4)$ Blood flowing in it has RBC, plasmaprotein etc. |
The structural unit of human kidney is
Identify the wrong statements about human excretory system and choose the option accordingly
$I.$ Kidneys are reddish brown and bean-shaped structure
$II.$ Kidneys are situated between the last thoracic and third lumber vertebra
$III.$ Each kidney of an adult human measures $10-12\, cm$ in length, $5-7\, cm$ in width, $2-3 \,cm$ thickness, and average weight $120-170$ $gram$
The Bowman's capsule is
Choose the correct statement given below regarding juxta medullary nephron.
How many nephrons are present in each kidney?