Transport in Humans

• Lack of nucleus in RBC increases the volume available for haemoglobin, not to hold extra oxygen molecules

• Antibody vs Antigen:

  • Antibody: Protein produced by your immune system to attack and fight off antigens
  • Antigen: foreign substance that enters your body (eg. bacteria, virus, fungi)

• Ventricular contraction:

  • Muscle of left ventricle contracts, not the chamber itself

• Carrying of drug to heart muscle:

  • Drug need to dissolve in blood plasma first, then carried in veins to the heart -> aorta -> coronary artery

• Arteriole have more muscle fibres than large arteries

  • Muscle fibres need to contract and relax for vasoconstruction and vasodilation