ASVAB (Armed Services Vocational Aptitude Battery)General Science (GS)Easy
Which of the following is the primary function of red blood cells in the human body?
- ATransporting oxygen to tissues
- BClotting blood to stop bleeding
- CFighting off infections
- DProducing antibodies
Show answer & explanationAnswer & explanation
Correct answer: A. Transporting oxygen to tissues
Red blood cells contain hemoglobin, a protein that binds to oxygen in the lungs and releases it to the body's tissues, making oxygen transport their primary function.
Why the other options are wrong
- B. Platelets and clotting factors are primarily responsible for blood clotting.
- C. White blood cells are primarily responsible for fighting infections.
- D. Plasma cells, a type of white blood cell, produce antibodies.
Red Blood Cells (Erythrocytes)
Disk-shaped cells in blood that primarily transport oxygen from the lungs to the body's tissues.
- Contain hemoglobin, which binds to oxygen.
- Lack a nucleus in mature form.
- Produced in the bone marrow.
Memory trick: Red carries air, White fights the scare, Platelets repair, Plasma's everywhere.