The largest RBC's have been seen in
Amphibians
- Man
- Elephant
- Whale
The Correct Option is A
Solution and Explanation
Amphibians, such as certain species of frogs, have some of the largest red blood cells (RBCs) among vertebrates. This adaptation is thought to be related to their unique physiological requirements, including the ability to absorb oxygen through their skin in addition to their lungs. The larger RBCs provide a larger surface area for gas exchange through the skin, aiding in oxygen uptake. This feature sets them apart from mammals like elephants, which have smaller RBCs, and frogs, which also have larger RBCs but fall under the category of amphibians.
Top Questions on Blood
- When one of the parents has ‘A’ blood group and the other parent has ‘O’ blood group, then their child can have _______ blood group.
- Identify the incorrect statements.
(A) Gametocytes of Plasmodium develop in the RBCs.
(B) Ascariasis pathogens are transmitted to a healthy person through the bite by female mosquito vectors.
(C) Entamoeba histolytica is a helminth parasite in the small intestine of humans, causing amoebiasis.
(D) Malarial parasite reproduces asexually in the gut of the mosquito.
(E) Filarial worms reside in the lymphatic vessels of the lower limbs.
Choose the correct answer from the options given below - As per ABO blood grouping system, the blood group of father is $B^+$ , mother is $A^+$ and child is $O^+$. Their respective genotype can be
A. $I^B i/I^A i/ii$
B. $I^B I^B /I^A I^A /ii$
C. $ I^A I^B /iI^A /I^B i$
D. $I^A i/I^B i/I^A i$
E. $iI^B /iI^A /I^A I^B$
Choose the most appropriate answer from the options given below : - A 25-year-old male presented with low hemoglobin, platelet count of 25,000/mL, gum bleeding, and raised PT & aPTT. The image of his peripheral smear is given below. What is the likely diagnosis?
- A young patient presents with a large retroperitoneal hemorrhage. He also gives a frequent history of intermittent swelling of knees on strenuous exercise. There is no history of any mucosal bleeding. Which among the following clotting factors is responsible for the condition mentioned above ?
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Concepts Used:
Blood
Blood is a fluid-like structure that is responsible for transporting oxygen and other nutrients to all the cells of the body. Blood shows characteristics of both tissues and fluid.
Composition of Blood:
Blood is composed of the below-mentioned parts:
- Plasma
- Blood Cells
- Platelets
Types of Blood Cells:
The two types of blood cells present in the body are:
RBC (Red Blood Cells)
RBC’s are also known as Erythrocytes. They are biconcave and are present without a nucleus in human beings. It contain Haemoglobin which is an iron-rich protein due to which the color of blood is red. RBC’s are produced in the bone marrow which is mainly responsible for the transportation of oxygen to and from various tissues and organs present in the human body.
WBC (White Blood Cells)
WBC’s are also known as Leucocytes which are colourless blood cells due to the absence of haemoglobin. They are further divided into two categories such as granulocytes and agranulocytes. Their main responsibility is to provide immunity and maintain defence mechanisms in the human body.
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