🔴BIOLOGY: BLOOD🔴
♦️Blood is a specialized body fluid that delivers necessary substances to various cells (like nutrients and oxygen) and transports waste products away from those cells
Blood accounts for 7% of human body weight
The average human adult has a blood volume of approx. 5 litres
Arteries carry inhaled oxygen-rich blood from the heart to the tissues, while veins carry carbon dioxide rich blood (de-oxygenated) from the tissues to the lungs to be exhaled
♦️Blood is a specialized body fluid that delivers necessary substances to various cells (like nutrients and oxygen) and transports waste products away from those cells
Blood accounts for 7% of human body weight
The average human adult has a blood volume of approx. 5 litres
Arteries carry inhaled oxygen-rich blood from the heart to the tissues, while veins carry carbon dioxide rich blood (de-oxygenated) from the tissues to the lungs to be exhaled
➕Composition of blood🔴
🔺Blood is made of plasma, Red Blood Cells, White Blood Cells (including leukocytes and platelets)
🔺Plasma constitutes about 54.3% of blood, RBCs 45% and WBCs about 7%
RBCs contain hemoglobin and distribute oxygen to tissuesLeukocytes attack and remove pathogens and provide immunity
🔺Platelets are responsible for clotting of blood
🔺Plasma is the blood’s liquid medium. It circulates dissolved nutrients and removes waste products. By itself, it is yellow in colour
🔴Functions of blood
🔺Supply oxygen to tissues
Supply nutrients such as glucose, amino acids and fatty acids
🔺Remove waste such as carbon dioxide, urea and lactic acid
🔺Provide immunity against pathogens
🔺Coagulation
🔺Transport hormones
🔺Regulate pH
🔺Regulate core body temperature
🔴Colour of blood
🔺Colour is primarily determined by hemoglobin
Arterial blood is bright red, due to the presence of oxygen
🔺Venous blood is dark red, due to deoxygenation
🔺Blood in carbon monoxide and cyanide poisoning is bright red
🔺Blood of most molluscs (marine animals like squids, oysters, snails, octopuses etc) is blue due to the presence of copper containing protein hemocyanin.
sources suresh what's app group.
🔺Blood is made of plasma, Red Blood Cells, White Blood Cells (including leukocytes and platelets)
🔺Plasma constitutes about 54.3% of blood, RBCs 45% and WBCs about 7%
RBCs contain hemoglobin and distribute oxygen to tissuesLeukocytes attack and remove pathogens and provide immunity
🔺Platelets are responsible for clotting of blood
🔺Plasma is the blood’s liquid medium. It circulates dissolved nutrients and removes waste products. By itself, it is yellow in colour
🔴Functions of blood
🔺Supply oxygen to tissues
Supply nutrients such as glucose, amino acids and fatty acids
🔺Remove waste such as carbon dioxide, urea and lactic acid
🔺Provide immunity against pathogens
🔺Coagulation
🔺Transport hormones
🔺Regulate pH
🔺Regulate core body temperature
🔴Colour of blood
🔺Colour is primarily determined by hemoglobin
Arterial blood is bright red, due to the presence of oxygen
🔺Venous blood is dark red, due to deoxygenation
🔺Blood in carbon monoxide and cyanide poisoning is bright red
🔺Blood of most molluscs (marine animals like squids, oysters, snails, octopuses etc) is blue due to the presence of copper containing protein hemocyanin.
sources suresh what's app group.
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