Negative Feedback Mechanism for RAAS

Q.

Which of the following is not a function of the sympathetic nervous system?

1. Increase in heart rate

2. Decrease in heart rate

3. Increase in cardiac output

4. Increase in the strength of ventricular contraction

Q. Receptors associated with the aortic arch and carotid artery can recognize the changes in ___A___ and $H^{+}$ concentration and send necessary signals to the ____B___ for remedial actions.

Select the right choice for A and B to complete the given statement.

1. A - $O{H}^{-}$; B - cerebellum
2. A - $O_2$; B - spinal cord
3. A - $C{O}_2$; B - rhythm centre in medulla oblongata
4. A - blood circulation; B - cerebrum

Q. Which of the following statement is not correct related to ANF?

1. Increase in blood pressure and blood volume stimulates release of ANF
2. Inhibits the release of renin by JGA
3. Inhibits the reabsorption of $N{a}^{+}$ and water
4. Decrease the urinary excretion

Q.

What is the effect of the sympathetic nervous system on heart beat?

Q. Sympathetic nervous system

1. prepares the body for intense physical activity
2. decreases the rate of heart beat
3. relaxes the body
4. decreases the speed of conduction of action potentials

Q. In response to $C{O}_2$ concentration, the chemosensitive area and, receptors associated with aortic arch and carotid artery, send necessary signals for remedial actions to:

1. Pneumotaxic centre
2. Apneustic centre
3. Respiratory rhythm centre
4. Both a and b

Q. Which of the following statement is not correct related to ANF?

1. Increase in blood pressure and blood volume stimulates release of ANF
2. Inhibits the release of renin by JGA
3. Inhibits the reabsorption of $N{a}^{+}$ and water
4. Decrease the urinary excretion

Q. Which of the following leads to the stimulation of receptors located in the aortic arch and carotid artery?

1. High oxygen concentration
2. High carbon dioxide concentration
3. Low pH
4. Both b and c

Q. Which of the following leads to the stimulation of receptors located in the aortic arch and carotid artery?

1. High oxygen concentration
2. High carbon dioxide concentration
3. Low pH
4. Both b and c

Q. How albumins help in maintaining osmotic pressure?

Q. Which of the following is TRUE regarding atrial natriuretic factor (ANF)?

1. When blood pressure is increased, ANF is secreted which causes dilation of the blood vessels
2. ANF is a peptide hormone
3. ANF is secreted by the atrial wall of the heart
4. All of the above

Q. Given below are four statements (a)-(d), each with one or two blanks. Select the option which correctly fills up the blanks.
(a) In amphibians and reptiles, the left atrium receives oxygenated blood from $\underset{¯}{\left(i\right)}$ and right atrium gets the $\underset{¯}{\left(\mathrm{ii}\right)}$ blood from other body parts.
(b) $\underset{¯}{\left(i\right)}$, the tendon-like cords, prevent the inversion of atrio-ventricular valves.
(c) $\underset{¯}{\left(i\right)}$ has same mineral distribution as that in plasma and also present in $\underset{¯}{\left(\mathrm{ii}\right)}$ in intestinal villi.
(d) The first heart sound (lub) is associated with the closure of the $\underset{¯}{\left(i\right)}$ valves whereas second heart sound (dub) is associated with closure of $\underset{¯}{\left(\mathrm{ii}\right)}$ valves.
नीचे चार कथन (a) - (d) दिए गए हैं, प्रत्येक में एक या दो रिक्त स्थान हैं। उस विकल्प का चयन कीजिए जो रिक्त स्थानों को सही ढंग से भरता है।
(a) उभयचरों और सरीसृपों में, बायां अलिंद $\underset{¯}{\left(i\right)}$ से ऑक्सीजनित रक्त प्राप्त करता है और दायां अलिंद शरीर के अन्य भागों से $\underset{¯}{\left(\mathrm{ii}\right)}$ रक्त प्राप्त करता है।
(b) $\underset{¯}{\left(i\right)}$, कंडरा जैसी रज्जुक, अलिंद निलयी कपाटों के व्युत्क्रमण को रोकती हैं।
(c) $\underset{¯}{\left(i\right)}$ में प्लैज्मा के समान ही खनिज लवण पाए जाते हैं और आंत्र अंकुर के $\underset{¯}{\left(\mathrm{ii}\right)}$ में भी पाया जाता है।
(d) प्रथम हृदय ध्वनि (लब), $\underset{¯}{\left(i\right)}$ कपाटों के बंद होने से संबंधित है जबकि दूसरी हृदय ध्वनि (डब) $\underset{¯}{\left(\mathrm{ii}\right)}$ कपाटों के बंद होने से संबंधित है।

1. (a) – (i) Gills
   (b) – (i) Fossa ovalis
   (a) — (i) क्लोम
   (b) — (i) फोसा ओवेलिस
2. (d) – (i) Semilunar
   (c) – (ii) Lymph
   (d) — (i) अर्धचंद्राकार
   (c) — (ii) लसीका
3. (b) – (i) Chordae tendinae
   (a) – (ii) Deoxygenated
   (b) — (i) कार्डिए टेंडिनेय
   (a) — (ii) विऑक्सीजनित
4. (c) – (i) Blood
   (d) – (i) Semilunar
   (c) — (i) रक्त
   (d) — (i) अर्धचंद्राकार

Q. Sympathetic nervous system

1. prepares the body for intense physical activity
2. decreases the rate of heart beat
3. relaxes the body
4. decreases the speed of conduction of action potentials

Q.

Which of the following represents the negative feedback mechanism on the RAAS loop?

1. High Angiotensin II $\Rightarrow$decrease in renin $\Rightarrow$Increased blood pressure$\Rightarrow$Secretion of renin stops.

2. Angiotensin I $\Rightarrow$secretion of Renin $\Rightarrow$ACE $\Rightarrow$Angiotensin II $\Rightarrow$Aldosterone.

3. Decreased angiotensin II $\Rightarrow$Decreased blood pressure $\Rightarrow$Secretion of renin starts.

4. Angiotensin $\Rightarrow$Renin $\Rightarrow$Angiotensinogen I$\Rightarrow$ACE $\Rightarrow$Angiotensinogen II$\Rightarrow$Aldosterone.

Q.

high blood pressure can be caused by excessive weight and lack of excercise

justify the statment

Q. An increase in blood pressure can cause the release of , a way to control the RAAS system.

1. ABF
2. ANP
3. APF
4. AEF

Q. Arrange in the order that represents the negative feedback mechanism on the RAAS loop.

1. Renin decreases
2. Renin stops
3. $\mathrm{High}\mathrm{Angiotensin}\mathrm{II}$
4. High BP

Q. An increase in blood pressure can cause the release of , a way to control the RAAS system.

1. ABF
2. ANP
3. APF
4. AEF

Q.

Which of the following represents the negative feedback mechanism on the RAAS loop?

1. High Angiotensin II $\Rightarrow$decrease in renin $\Rightarrow$Increased blood pressure$\Rightarrow$Secretion of renin stops.

2. Angiotensin I $\Rightarrow$secretion of Renin $\Rightarrow$ACE $\Rightarrow$Angiotensin II $\Rightarrow$Aldosterone.

3. Decreased angiotensin II $\Rightarrow$Decreased blood pressure $\Rightarrow$Secretion of renin starts.

4. Angiotensin $\Rightarrow$Renin $\Rightarrow$Angiotensinogen I$\Rightarrow$ACE $\Rightarrow$Angiotensinogen II$\Rightarrow$Aldosterone.

Q. Arrange in the order that represents the negative feedback mechanism on the RAAS loop.

1. Renin decreases
2. Renin stops
3. $\mathrm{High}\mathrm{Angiotensin}\mathrm{II}$
4. High BP