Blood

Function

A fluid tissue: red cells carry oxygen, white cells defend, platelets help clotting, all suspended in plasma.

Includes

Plasma, red cells, white cells and platelets, mostly made in the bone marrow.¹

A short overview linking this part to related content.

Conditions that affect it

• AnemiaCondition
• Sickle cell diseaseCondition

Related to

• Complete blood count (CBC)Lab test
• Ferritin testLab test

Specialty

• HematologySpecialty
• Vascular surgerySpecialty

References

1. 1
   NCI SEER Training. Blood. training.seer.cancer.gov/anatomy/cardiovascular/blood/
   Educational & historical references · Accessed 2026-10-03