Carries oxygen and carbon dioxide, clots blood upon injury to prevent blood loss and defends from invading microorganisms.

Stores triglycerides which is a source of fuel for cellular respiration, and also provides cushioning from mechanical impact.

Anchors superficial epithelial tissues to underlying tissues, provides support but is delicate enough for resident white blood cells to circulate within.

Makes up capsules of internal organs, surrounds blood vessels, nerves and muscles. Attaches superficial tissues layers to deep tissue layers.