MEDICAL PHYSIOLOGY

PHYSIOLOGY

CARDIOVASCULAR PHYSIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following statements about mature red blood cells is NOT true?
A
life span of around 120 days
B
contain hemoglobin
C
no nuclei
D
divide to make new cells when old ones need to be replaced
Explanation: 

Detailed explanation-1: -Answer and Explanation: The correct answer is (3) Erythrocytes lack a nucleus. Erythrocytes are red blood cells (RBCs). Mature and circulating RBCs do NOT have a nucleus.

Detailed explanation-2: -Red cells contain neither a nucleus nor RNA (ribonucleic acid, necessary for protein synthesis), so that cell division (mitosis) and production of new protein are impossible. Energy is not necessary for oxygen and carbon dioxide transport, which depends principally on the properties of hemoglobin.

There is 1 question to complete.