EVERYDAY SCIENCE

SCIENCE

CIRCULATORY SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Each red corpuscle in man has.
A
A single nucleus
B
Two nuclei
C
Numerous nuclei
D
No nucleus
Explanation: 

Detailed explanation-1: -In humans, mature red blood cells are flexible biconcave disks. They lack a cell nucleus and organelles, to accommodate maximum space for hemoglobin; they can be viewed as sacks of hemoglobin, with a plasma membrane as the sack. Approximately 2.4 million new erythrocytes are produced per second in human adults.

Detailed explanation-2: -– Unlike the rest of the cells in your body, your red blood cells lack nuclei.

Detailed explanation-3: -Abstract. Mammal red blood cells (erythrocytes) contain neither nucleus nor mitochondria. Traditional theory suggests that the presence of a nucleus would prevent big nucleated erythrocytes to squeeze through these small capillaries. However, nucleus is too small to hinder erythrocyte deformation.

Detailed explanation-4: -Red Blood Cells are produced in the bone marrow and they have a nucleus when they are initially produced. Later, they lose nucleus in order to accommodate more haemoglobin so that they can transport more amount of oxygen. Therefore they are still considered as cells.

Detailed explanation-5: -Complete answer: Mature red blood corpuscles (RBCs) are the blood cells without a nucleus, found within all mammals including human beings.

There is 1 question to complete.