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Biology 12 Chapter 15 Homeostasis - 11
1.
Which one of the following gives rise to peritubular capillaries?
a) Vasa recta.
b) Efferent arterioles.
c) Interlobular arteries.
d) Afferent arterioles.
2.
How many types of nephrons are there?
a) Several.
b) Two.
c) Three.
d) One.
3.
Where are cortical nephrons present?
a) Renal pelvis.
b) Hilum.
c) Medulla.
d) Cortex.
4.
Which %age of nephrons are cortical?
a) 20-30%.
b) 90%.
c) 70-80%.
d) 50-60%.
5.
Which %age of nephrons are juxtamedullary?
a) 20-30%.
b) 90%.
c) 50-60%.
d) 70-80%.
6.
Which one has less diameter?
a) Afferent veins.
b) Efferent arterioles.
c) Afferent arterioles.
d) Efferent veins.
7.
Which step is NOT involved in the urine formation?
a) Tubular secretion.
b) Tubular reabsorption.
c) None of these.
d) Glomerular filtration.
8.
In how many steps, urine is formed?
a) Several.
b) Three.
c) One.
d) Two.
9.
Which step in urine formation is called ultrafiltration?
a) None of these.
b) Tubular secretion.
c) Glomerular filtration.
d) Tubular reabsorption.
10.
Where does pressure filtration takes place?
a) Renal corpuscle.
b) Renal pelvis.
c) Renal capsule.
d) Renal medulla.
11.
What is the pressure called that comes from blood pressure, in pressure filtration?
a) Hydrostatic pressure.
b) Diastolic pressure.
c) Systolic pressure.
d) Hygroscopic pressure.
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