Flashcards
Circulatory System
Cards in this deck (15)
- 1circulatory systempumps blood containing glucose and oxygen around the body
- 2what is blood used by?cells to produce energy through respiration
- 3describe the journey blood takes around the bodyheart -> pulmonary artery -> lungs -> pulmonary vein -> heart -> aorta -> body -> vena cava -> heart
- 4VEALVeins
Enter
Arteries
Leave
(the heart) - 5double circulationduring one full circuit of the body, blood passes through the heart twice
- 6features of an artery- thick wall
- narrow lumen (hole)
- high pressure - 7features of a vein- thin wall
- large hole
- valves (stops backflow)
- low pressure - 8features of a capillary- wall is one cell thick
- narrow hole
- low pressure - 9what does blood contain?- red blood cells
- white blood cells
- plasma - 10red blood cells- contain haemoglobin (combines reversibly with oxygen to create oxyhaemoglobin)
- no nucleus (more space to carry haemoglobin) - 11coronary arteriessupply heart muscles with oxygen and glucose (for respiration)
- 12right side of heart v.s left side of heart- right has thinner muscle wall than left
- right goes to lungs, left goes to body - 13why might you need a stent?if your coronary arteries have become blocked with large amounts of saturated fat / cholestrol
- 14bypasswhen a blocked coronary artery is 'bypassed' using a piece of vein, usually from the leg
- 15artificial heart pros and cons- not always reliable
- batteries run out
- risky surgery
- gives patient longer to live
- body can't reject it
Information
- Description
- GCSE Sciences (Biology) Flashcards on Circulatory System, created by Kit Sinclair on 19/04/2015.
- Created by
- Kit Sinclair
- Views
- 38
- Tags
- Rating