55 Questions
What is the meaning of 'bi' in the term 'biconcave'?
Two
What is the advantage of erythrocytes being flexible?
Ability to pass through capillaries
What is the shape of an erythrocyte that increases its surface area for gas exchange?
Biconcave
Which group of animals has nucleated erythrocytes?
All of the above
What is the characteristic of erythrocytes that distinguishes them from other cells?
Anucleate
Erythrocytes have a nucleus in all vertebrates.
False
The biconcave shape of erythrocytes reduces their surface area for gas exchange.
False
Erythrocytes are rigid and inflexible.
False
The curvature of erythrocytes is outwards.
False
The shape of erythrocytes has no effect on their ability to exchange gases.
False
Erythrocytes are ______ apart from those in birds, reptiles, amphibians, and fish.
anucleate
The shape of erythrocytes is described as ______ concave.
bi
Erythrocytes are ______ to pass through capillaries.
flexible
The ______ shape of erythrocytes increases their surface area for gas exchange.
biconcave
The ______ of erythrocytes curves inwards.
concave
Match the characteristics of erythrocytes with their corresponding advantages:
Biconcave shape = Increased surface area for gas exchange Flexible = Easy passage through capillaries Anucleate = Lighter in weight Curves inwards = Increased volume for carrying oxygen
Match the features of erythrocytes with their descriptive terms:
Two curves inwards = Biconcave Lacking a nucleus = Anucleate Ability to change shape = Flexible Increased surface area = Concave
Match the characteristics of erythrocytes with the exceptions:
Have a nucleus = Birds, reptiles, amphibians, and fish Are flexible = Mammals Have a biconcave shape = All vertebrates Are found in the blood = All living organisms
Match the characteristics of erythrocytes with their functions:
Surface area = Gas exchange Flexibility = Passing through capillaries Shape = Carrying oxygen Lack of nucleus = Reducing metabolic activities
Match the terms with their corresponding meanings in the context of erythrocytes:
Bi = Two Concave = Curves outwards Anucleate = Lacking a nucleus Flexible = Unchangeable shape
Match the following characteristics of RBCs with their descriptions:
Circular = Shape of RBCs in some species Oval = Shape of RBCs in some species Heterogenous = RBCs with different shapes Homogenous = RBCs with uniform shape
Match the following characteristics of RBCs with their effects on RBCs' functionality:
Central pallor = Increases surface area for gas exchange Biconcave shape = Increases surface area for gas exchange Heterogenous shape = Reduces surface area for gas exchange Homogenous shape = No effect on surface area for gas exchange
Match the following characteristics of RBCs with their species-specific examples:
Circular = Mammals Oval = Birds Heterogenous = Reptiles Homogenous = Fish
Match the following RBC characteristics with their effects on RBC flexibility:
Biconcave shape = Increases flexibility Circular shape = Decreases flexibility Heterogenous shape = No effect on flexibility Homogenous shape = Increases flexibility
Match the following characteristics of RBCs with their relevance to gas exchange:
Central pallor = Increases surface area for gas exchange Biconcave shape = Increases surface area for gas exchange Heterogenous shape = No effect on gas exchange Homogenous shape = Decreases surface area for gas exchange
What is the primary function of erythrocytes in the body?
To carry oxygen to the tissues
Where are erythrocytes produced in the body?
In the bone marrow
What is the average lifespan of erythrocytes?
110 days
What is the purpose of the hormone erythropoietin?
To stimulate the production of erythrocytes
Where do erythrocytes typically get broken down?
In the spleen and liver
Erythrocytes can leave the cardiovascular system without any damage to blood vessels.
False
The spleen is responsible for producing RBCs in the body.
False
Erythrocytes have a heterogeneous shape.
True
Erythrocytes can live up to 200 days on average.
False
Erythrocytes carry O2 to the tissues using a protein other than haemoglobin.
False
Erythropoietin is a hormone produced by the ______
kidneys
The major sites for the breakdown of RBC are the spleen and ______
liver
The average lifespan of RBC is approximately ______ days
110
RBC function to carry O2 to the tissues utilizing ______ for this
haemoglobin
RBC will never leave the cardiovascular system unless a blood vessel is ______
damaged
Match the following organs with their roles in the lifecycle of RBCs:
Bone marrow = Production of RBCs Spleen = Breakdown of RBCs Liver = Breakdown of RBCs Kidneys = Production of erythropoietin
Match the following characteristics of RBCs with their relevance to RBC shape:
Biconcave = Increases surface area for gas exchange Central pallor = Aids in O2 transportation Oval = Found in certain species of RBCs Heterogeneous = Found in certain species of RBCs
Match the following with their functions in the body:
Erythropoietin = Stimulates RBC production Haemoglobin = Carries O2 to the tissues RBCs = Carries O2 to the tissues Spleen = Filters the blood
Match the following with their effects on RBCs' movement:
Flexibility = Allows RBCs to pass through capillaries Rigidity = Prevents RBCs from passing through capillaries Biconcave shape = Aids in O2 transportation Damaged blood vessels = Allows RBCs to leave the cardiovascular system
Match the following with their locations in the body:
RBC production = Bone marrow RBC breakdown = Spleen and liver Erythropoietin production = Kidneys RBC function = Tissues
What is the function of the iron atom in each molecule of haemoglobin?
To bind one oxygen molecule
Why does iron deficiency lead to feelings of tiredness?
Because iron is necessary for the transportation of oxygen in the blood
What is the difference between oxyhaemoglobin and deoxyhaemoglobin?
Oxyhaemoglobin is red, while deoxyhaemoglobin is purplish-blue
What is the advantage of having haemoglobin in red blood cells?
It allows red blood cells to carry more oxygen than if it were dissolved in plasma
How many molecules of oxygen can each molecule of haemoglobin bind?
Four
What is the primary function of haemoglobin in erythrocytes?
Carry oxygen to tissues
How many oxygen molecules can each molecule of haemoglobin bind?
Four
What color does deoxygenated haemoglobin appear as?
Purple
Why do people feel tired when they are iron deficient?
Red blood cells carry less oxygen
What is the advantage of having haemoglobin in red blood cells for oxygen transportation?
Allows for efficient O2 binding and transport
Learn about the unique biconcave structure of erythrocytes, which allows for flexibility in passing through capillaries and increased surface area for gas exchange. Explore how most erythrocytes are anucleate, except in certain animal species.
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