Respiratory And Circulatory Section 2 Flashcards
What is the name of the thick muscle layer of the heart
Myocardium
What is the name of the membranous sac which encloses the heart
Pericardium
What is the name for the inner layer of the wall of the heart
Endocardium
What is the name for the top chambers of the heart
Atria
What is the name for the bottom chambers of the heart
Ventricles
What is the name of the wall like structure that separates the left and right sides of the heart
Septum
Which large artery provides oxygenated blood to the tissues from the heart
Aorta
What is the function of the pulmonary arteries
Carries deoxygenated blood from the right side of the heart to the lungs
What is the function of the vena cava
Carries deoxygenated blood back to the heart from the tissues
Heart diagram
Right atrium Left atrium
Pulmonary valve Septum
Pulmonary vein Pulmonary artery
Inferior vena cava Aorta
Right ventricle Superior vena cava
Descending aorta
Left ventricle
What is the correct sequence of structures through which blood moves from the pulmonary veins to the aorta
Left atrium, mitrial (bicuspid valve), left ventricle, aortic valve
What is the correct sequence which allows blood to move from the vena cava to the lungs
Right atrium, tricuspid valve, right ventricle, pulmonary valve
What are the 3 cardiac cycle stages
- Atrial systole
- Ventricular systole
- Atrial and ventricle diastole (complete cardiac diastole)
What is the correct sequence to represent the cardiac conduction pathway in a normal healthy heart
Sinoatrial (SA) node, atrioventricular (AV) node, atrioventricular (AV) bundle/bundle of his, left and right bundle branches, purkinje fibres
Which muscle is primarily responsible for inspiration
The diaphragm
Which gas makes up the highest proportion of normal atmospheric air
Nitrogen
If the amount of carbon dioxide in the blood increases, what is likely to happen to the rate of breathing
Increase
What is the process by which gas exchange occurs between the air in the alveoli and blood in the nearby capillaries
Diffusion
What are the functions of the respiratory system
To provide oxygen for energy production (metabolism), to remove waste products of energy production, to regulate acid base balance, filters, heats and humidifies inspired air
Which gas is essential for most metabolic reactions that produce energy
Oxygen
Which gas is the waste product of energy production
Carbon dioxide
Which lung has the most lobes
Right lung
