The Circulatory System Flashcards
What are some useful substances transported by the blood?
- Hormones
- Oxygen
- Glucose
What are some excretory substances transported by the blood?
- Carbon dioxide
2. Urea
What are the excretory organs?
- Lungs
- Kidneys
- Skin
What are the main parts of the circulatory system?
- Heart
- Blood vessels- arteries, veins, capillaries
- Blood- red and white blood cells, plasma, platelets
What is the function of the heart?
- To. Pump blood.
How many chambers are there in the heart?
- Four
Name the upper and lower sections of the heart.
- Upper- ARTIA [singl. Atrium]
2. Lower- VENTRICLES [singl. Ventricle]
What are the main blood vessels leaving the heart?
1 Aorta
2. Pulmonary artery
What are the main blood vessels coming to the heart?
- Pulmonary vein
2. Inferior vena cava
What happens when blood vessels to the heart muscle tissue are blocked?
- Heart muscle DOES NOT RECEIVE SUFFICIENT OXYGEN and GLUCOSE.
- RESPIRATION cannot occur as it normally does and this could result in a heart attack.
What is the affect of smoking?
- Coronary vessels become more narrow, making any blockages dangerous [i.e. Lead to heart attacks]
What is the affect of eating fatty foods everyday?
- Blood cholesterol is heightened thus making your heart work harder to pump the blood. [i.e. Strain the heart]
- CHOLESTEROL- makes the lining of the heart thicker.
What is problem with letting yourself become too fat?
- The heart has to pump the blood further and fatty deposits narrow or block blood vessels.
What is the affect of alcohol consumption?
- Hardens arteries
What is the affect of old age?
- Decreases blood vessels elasticity.