Fate of RBC

Q.

What is the function of the spleen in the body?

Q.

Match column I with column II:

Column I			Column II
(a)	Eosinophils	(i)	Coagulation
(b)	RBC	(ii)	Universal Recipient
(c)	AB Group	(iii)	Resist Infections
(d)	Platelets	(iv)	Contraction of Heart
(e)	Systole	(v)	Gas transport

Q. Life-span of red blood cells is

1. 100 days
2. 120 days
3. 150 days
4. 80 days

Q. Which of the following is/are functions of angiotensin II?

1. Vasoconstriction of blood vessels
2. Triggers adrenal glands to produce aldosterone
3. Increases blood pressure and GFR
4. All of the above

Q.

Which one of the following human organs is often called the graveyard of RBCs?

1. Kidney

2. Liver

3. Spleen

4. Gallbladder

Q. Which of the following is/are part(s) of spleen?

1. Red pulp
2. White pulp
3. All of the above
4. Cords of Billroth

Q. Which of the following is correct with respect to the function of spleen?

1. It controls the level of blood cells
2. It fights invading germs in blood
3. All the above
4. It filters the blood and removes the damaged RBCs

Q. What is the role of hemoglobin in the blood?

Q. Which of the following organs is called the 'graveyard of RBCs'?

1. Gall Bladder
2. Spleen
3. Kidney
4. Liver

Q. Blood bank of human body is

1. Liver
2. Spleen
3. Kidney
4. Bone

Q. How are the kidneys involved in controlling blood volume? How is the volume of blood in the body related to arterial pressure?

Q. Average life span of human RBC is

1. 100 days
2. 90 days
3. 120 days
4. 24 days

Q. Read the following pioints :-
(i) Increase GFR
(ii) Increase B.P
(III) Decreases Blood Volume
(iv) Increases aldosterone secretion
(v) Vasoconstrictor
(vi) Increases Na excretion
How many points are correct about angiotensin II?

1. Two
2. Three
3. Four
4. Five

Q. Red blood cells are red due to the presence of

1. Haemocyanin
2. Haemoglobin
3. Serotonin
4. Epinephrine

Q. The function of red blood cells is

1. To defend the body against harmful infections
2. To clot the blood at the time of injuries
3. To produce white blood cells
4. To transport oxygen and carbon dioxide

Q. Which of the following organs is called the 'graveyard of RBCs'?

1. Gall Bladder
2. Spleen
3. Kidney
4. Liver

Q. Which of the following is correct with respect to the function of spleen?

1. It fights invading germs in blood
2. It controls the level of blood cells
3. It filters the blood and removes the damaged RBCs
4. All the above

Q. In mammals, including humans, nitric oxide (NO) is an important cellular signaling molecule involved in many physiological processes. Research into its function led to the 1998 Nobel Prize for discovering its role in cardiovascular function. One specific role of nitric oxide in cardiac function is the dilation of blood vessels, a process called vasodilation. Vasodilation of the arteries lowers blood pressure and decreases the force that the heart muscle needs to exert to pump blood.
The cell signaling mechanism begins when NO diffuses into the smooth muscle cells of the blood vessel and activates Guanylate Cyclase which, in turn, stimulates the Guanylate Cyclase to generate cyclic GMP (guanosine monophosphate) from Guanosine Triphosphate (GTP). Protein Kinase G phosphorylates several proteins that regulate calcium concentrations and, in this case, causes alterations in thin and thick muscle filaments that result in smooth muscle relaxation. This signaling mechanism is illustrated below:
Signal transduction pathways are composed of a complex series of biochemical reactions but they can be described in three essential steps.
Which statement best identifies the role and sequence of the primary molecules involved in nitric oxide cell signaling?

1. The signal transduction pathway begins with nitric oxide (NO) acting as the signal, cyclic GMP as the second messenger that results in amplification of the signal via a phosphorylation cascade. The cellular response is smooth muscle relaxation.
2. The signal transduction pathway begins with nitric oxide (NO) acting as the signal and Protein Kinase G as the second messenger, triggering a phosphorylation cascade. The cellular response is smooth muscle contraction.
3. The signal transduction pathway begins with nitric oxide (NO) acting as the signal and Guanylyl Cyclase as the second messenger. This results in amplification of the signal via a phosphorylation cascade. The cellular response is smooth muscle contraction.
4. The signal transduction pathway begins with the activation of Guanylyl Cyclase acting as the signal and Protein Kinase G as the second messenger, triggering a phosphorylation cascade. The cellular response is smooth muscle contraction.

Q. In mammals, including humans, nitric oxide (NO) is an important cellular signaling molecule involved in many physiological processes. Research into its function led to the 1998 Nobel Prize for discovering its role in cardiovascular function. One specific role of nitric oxide in cardiac function is the dilation of blood vessels, a process called vasodilation. Vasodilation of the arteries lowers blood pressure and decreases the force that the heart muscle needs to exert to pump blood.
The cell signaling mechanism begins when NO diffuses into the smooth muscle cells of the blood vessel and activates Guanylate Cyclase which, in turn, stimulates the Guanylate Cyclase to generate cyclic GMP (guanosine monophosphate) from Guanosine Triphosphate (GTP). Protein Kinase G phosphorylates several proteins that regulate calcium concentrations and, in this case, causes alterations in thin and thick muscle filaments that result in smooth muscle relaxation. This signaling mechanism is illustrated below:
Signal transduction pathways are composed of a complex series of biochemical reactions but they can be described in three essential steps.
Which statement best identifies the role and sequence of the primary molecules involved in nitric oxide cell signaling?

1. The signal transduction pathway begins with nitric oxide (NO) acting as the signal, cyclic GMP as the second messenger that results in amplification of the signal via a phosphorylation cascade. The cellular response is smooth muscle contraction.
2. The signal transduction pathway begins with nitric oxide (NO) acting as the signal and Protein Kinase G as the second messenger, triggering a phosphorylation cascade. The cellular response is smooth muscle relaxation.
3. The signal transduction pathway begins with nitric oxide (NO) acting as the signal and Guanylyl Cyclase as the second messenger. This results in amplification of the signal via a phosphorylation cascade. The cellular response is smooth muscle contraction.
4. The signal transduction pathway begins with the activation of Guanylyl Cyclase acting as the signal and Protein Kinase G as the second messenger, triggering a phosphorylation cascade. The cellular response is smooth muscle contraction.

Q. Which of the following is/are the function(s) of the red blood cells in the body?

1. Only (i)
2. Only (ii)
3. Only (iii) and (iv)
4. Only (i), (ii) and (iv)

Q. Human mature red blood cells(RBCs) do not contain

1. Cytoplasm
2. Haemoglobin
3. Mitochondria
4. Iron

Q. The ratio of RBC to WBC in man is

1. 6 : 1
2. 60 : 1
3. 600 : 1
4. 6000 : 1

Q. An iron-containing protein myoglobin is present in the

1. Lungs
2. Spleen
3. Muscles
4. None of the above

Q. Life span of mammalian R.B.C. is

1. None of the above
2. 120-128 days
3. 100 days
4. Less than 100 days

Q. In line 83801, the word "spleen" most nearly means?

1. path
2. blood
3. melancholy
4. kidney
5. energy