A. Increase in blood pressure and Glomerular filtration rate.
B. Reabsorption of Na$^{+}$ and water from distal parts of tubule due to Aldosterone.
C. Fall in Glomerular filtration rate.
D. Vasoconstriction by Angiotensin II and release of Aldosterone.
E. Renin converts Angiotensinogen into Angiotensin I, followed by Angiotensin II.
Choose the correct answer from the options given below :
Ordering Renin-Angiotensin Mechanism Events
The Renin-Angiotensin mechanism regulates blood pressure and fluid balance. Here's the correct sequence of events:
- Step 1: Trigger (C): A decrease in blood pressure or glomerular filtration rate (GFR) occurs.
- Step 2: Hormone Cascade (E): In response, renin is released. Renin converts angiotensinogen into angiotensin I, which is then converted to angiotensin II.
- Step 3: Angiotensin II Effects (D): Angiotensin II causes vasoconstriction (narrowing of blood vessels) and stimulates the release of aldosterone.
- Step 4: Aldosterone Action (B): Aldosterone acts on the distal tubules of the nephron, promoting the reabsorption of sodium ions ($Na^{+}$) and water.
- Step 5: Result (A): Increased sodium and water reabsorption leads to increased blood volume, consequently raising blood pressure and GFR.
Therefore, the correct order is C, E, D, B, A.
Correct Sequence Summary
The events in the Renin-Angiotensin mechanism occur in the following order:
C (Fall in Glomerular filtration rate) → E (Renin converts Angiotensinogen into Angiotensin I, followed by Angiotensin II) → D (Vasoconstriction by Angiotensin II and release of Aldosterone) → B (Reabsorption of $Na^{+}$ and water from distal parts of tubule due to Aldosterone) → A (Increase in blood pressure and Glomerular filtration rate).
Similar Questions
- The WBC count of a person's blood sample is 8000/cu.mm. How many eosinophils and lymphocytes would be in the same blood sample approximately ?
- Select the incorrect statements with reference to Rh grouping.
A. Erythroblastosis foetalis is a condition observed having fetus with Rh$^{-ve}$ blood and mother with Rh$^{+ve}$ blood.
B. Rh antigen is observed on RBCs in the majority of human beings.
C. Before blood transfusion, Rh group should also be matched.
D. Rh incompatibility is observed when a pregnant mother is Rh$^{-ve}$ and the fetus is Rh$^{+ve}$.
E. Erythroblastosis foetalis can be avoided by administering anti-Rh antibodies to the mother immediately after the delivery of the second child.
Choose the answer from the options given below : - The JGA (Juxta Glomerular Apparatus) is a special sensitive region formed by cellular modifications in ________ related to the same nephron.
- The number of action potentials generated by sino-arterial node (SAN) in a healthy human is _____ per minute.
- The opening between the right atrium and the right ventricle is guarded by
Important Questions from Human Anatomy and Physiology-II
- The WBC count of a person's blood sample is 8000/cu.mm. How many eosinophils and lymphocytes would be in the same blood sample approximately ?
- Select the incorrect statements with reference to Rh grouping.
A. Erythroblastosis foetalis is a condition observed having fetus with Rh$^{-ve}$ blood and mother with Rh$^{+ve}$ blood.
B. Rh antigen is observed on RBCs in the majority of human beings.
C. Before blood transfusion, Rh group should also be matched.
D. Rh incompatibility is observed when a pregnant mother is Rh$^{-ve}$ and the fetus is Rh$^{+ve}$.
E. Erythroblastosis foetalis can be avoided by administering anti-Rh antibodies to the mother immediately after the delivery of the second child.
Choose the answer from the options given below : - The JGA (Juxta Glomerular Apparatus) is a special sensitive region formed by cellular modifications in ________ related to the same nephron.
- The number of action potentials generated by sino-arterial node (SAN) in a healthy human is _____ per minute.
- The opening between the right atrium and the right ventricle is guarded by
