Heart

Question 1

Direction of blood circulation in heart

Answer 1

vena cava > right atrium > right ventricle > pulmonary artery > pulmonary vein > left atrium > left ventricle > aorta

Question 2

Heart wall layers

Answer 2

Pericardium: fiberous partial, visceral(epicardium) pericardial space

Myocardium

Edocardium

Question 3

Factors influencing and conrtolling Arterial BP

Answer 3

• Heart action- stroke volume (SV), cardiac output (CO)
• Cardiac control center - baroreceptors
• peripheral resistance
• Vasomotor center (medulla oblongata) blood gases, hormones

Question 4

Pulmonary Circulation

Answer 4

† Pulmonary circulation
— Closed loop of vessels carrying blood between heart and lungs
— Each minute the right ventricle pumps 5 L of blood through the lungs

Question 5

Systemic Circulation

Answer 5

† Systemic circulation

— Circuit of vessels carrying blood between heart and other body systems
— Each minutes the left ventricle pumps 5 L of blood through the systemic circulation