Heart Flashcards
What muscle contracts and releases to make pump blood around the body
The heart
What is the valve found between the right atrium and right ventricle
Tricuspid
The valve found between the left atrium and left ventricle is the
Bicuspid
What are the four chambers of the heart
Left ventricle and left atrium, right ventricle and right atrium
What general term is sometimes used to describe both the sets of valves?
Atrioventricular valves
What stops the valves being turned inside out when the ventricles contract
Tendons supporting the valves
What general term describes the valves found just inside the aorta and pulmonary artery
Semilunar
What is the function of the semilunar valves
To keep the blood flowing in the right direction
What factors could lead to heart disease
Blockages in cardiac/coronary blood supply caused by fatty deposits and can also occur in other blood vessels.
Lifestyles like lack of exercise can lead to obesity, as well as a poor diet (high in fat) smoking and Gentiles diseases.
What factors could change heart rate
Heart rate can change during exercise and the influence of adrenaline
Why is cardiac muscle special?
It never tires and contracts and relaxes regularly throughout life
What is the heart made of
Cardiac muscle
