Heart Flashcards
What type of circulatory system do humans have?
Double circulatory system
Why is this more efficient?
⦁ The blood passes through the heart twice so it can be sent around the body faster delivering cells with oxygen faster
What is the heart made of?
⦁ Muscle tissue
What blood vessel brings deoxygenated blood into the heart?
⦁ The vena cavo into the right atrium
What artery brings blood from heart to the lungs?
⦁ Pulmonary artery from the right ventricle
What vein brings oxygenated blood from the lungs to the heart?
⦁ The pulmonery vein into the left atrium
What blood vessel bring blood from the heart to the rest of the body?
⦁ The aorta from the left ventricle
Where does blood enter the heart from the body?
⦁ The right atrium
Where does blood enter the heart from the lungs?
⦁ The left atrium
How is blood pushed out of the heart?
⦁ The atriums and ventricles contract
What is the purpose of the valves?
⦁ To stop blood from backflowing into the atriums
Why does the left side of the heart have a more muscular wall?
⦁ It uses more force to pump blood around the whole body
Where do the coronary arteries come form?
⦁ The aorta
What is the purpose of the coronary arteries?
⦁ To provide oxygen to the muscle cells of the heart
Why does the heart need oxygen?
⦁ Used through respiration as it contracts
