Functions of the CV System Flashcards
1
Q
what are the functions of the cardiovascular system
A
- composition of blood
- delivery of oxygen and nutrients
- removal of waste products
- thermoregulation
- fighting infection
- blood clotting
2
Q
what are the three aspects that make up the blood
A
blood is made up of plasma, white blood cells & platelets and red blood cells
3
Q
how does the CV system link to the delivery of oxygen & nutrients
A
- nutrients derived from food (e.g. glucose, fatty acids, amino acids, vitamins & minerals)
- oxygen for cellular respiration ; energy production
4
Q
how does the CV system link to the removal of waste products
A
aerobically
- carbon dioxide is dissolved
- water is excreted from kidney
anaerobically
- lactate is a by product
5
Q
how does the CV system link to thermoregulation
A
- redirecting blood flow manages body temperature
- vasodilation and vasoconstriction manages how much blood is sent to a particular location
6
Q
how does the CV system link to the fighting of infections
A
the role of white blood cells is to fight off infections
7
Q
how does the CV system link to blood clotting
A
- platelets stick to exposed collagen fibres (when wound is opened)
- platelets form plug to smother and protect wound
- red blood cells also help heal wound
