Keywords

Cardiovascular diseases

Cardiovascular diseases

Any disease involving the heart or blood vessels.

Coronary heart disease

A condition where the blood vessels supplying the heart are narrowed or blocked.

Stroke

Occurs when a blood vessel supplying blood to the brain is narrowed.

Diffusion

Net movement of particles moving from an area of high concentration to an area of low concentration.

Mass transport system

A system that transports substances in bulk from 1 part of an organism to another.

Mass flow

Movement down a concentration gradient of a liquid or gas & all the particles it contains.

Arteries

Blood vessel which carry’s blood away from heart.

Arterioles

A blood vessel which take blood from smaller arteries to the capillaries.

Capillaries

A minute thin-walled vessel of the body.

Venules

A blood vessel that takes blood from the capillaries to the smaller veins.

Veins

Blood vessels that carry blood to the heart.

Single circulation

Blood passes through the heart once in its passage around the body.

Double circulation

Blood passes through the heart twice in its passage around the body.

Polar molecule

Unevenly distributed electrical charge; positive charge & negative charged ends.

Dipole

Polar molecule: Unevenly distributed electrical charge, positively & negatively charge ends.

Hydrogen bonding

Strong intermolecular forces created when a hydrogen atom approaches an electromagnetive atom.

Hydrophilic

Water-attracting.

Hydrophobic

Water-repelling.