Cannula
Videos
A cannula is a tube that can be inserted into the body, often for the delivery or removal of fluid or for the gathering of samples. In simple terms, a cannula can surround the inner or outer surfaces
Intravenous cannula
Flexile - it is inserted into a vein, and a transfusion or dropper, for example, is attached to the cannula.
Intravenous cannula inserted in forearm
Vein
Videos
A vein is a blood vessel in the circulatory system of humans and most other animals that carries blood towards the heart. Most veins carry deoxygenated blood from the tissues back to the heart; except
Layers of vein wall shown in comparison to arterial wall
Main veins of the systemic circulation
Deep and superficial veins of the arm and near thorax
Diagram of different sized veins with differing component proportions