Cardiovascular System 13.1-13.2

What does the cardiovascular system consist of?

• Heart and lungs

• Heart and blood vessels

• Heart and muscles

• Heart and bones

What is the primary function of the cardiovascular system?

• To supply oxygen and nutrients to cells

• To produce blood cells

• To regulate body temperature

• To control body movement

Where does oxygen-poor blood travel to pick up oxygen?

• Heart

• Brain

• Lungs

• Liver

What is the role of the systemic circuit in the cardiovascular system?

• It sends oxygen-poor blood to the lungs

• It sends oxygen-rich blood to all body cells

• It removes nutrients from the body

• It pumps blood to the heart only

Where is the heart located?

• Within the mediastinum in the thoracic cavity

• Within the abdominal cavity

• Within the cranial cavity

• Within the pelvic cavity

What is the pericardium in relation to the heart?

• A) A type of heart valve

• B) A blood vessel

• C) A membranous sac that encloses the heart

• D) A muscle layer of the heart

Which of the following is NOT a part of the pericardium?

• A) Visceral pericardium

• B) Parietal pericardium

• C) Pericardial cavity

• D) Myocardium

What is the function of the serous fluid in the pericardial cavity?

• A) It transports nutrients to the heart

• B) It prevents blood clots

• C) It reduces friction between the heart layers

• D) It initiates the heartbeat

Which layer of the pericardium is directly in contact with the heart?

• A) Fibrous pericardium

• B) Parietal pericardium

• C) Visceral pericardium

• D) Pericardial cavity

What is the outermost layer of the heart called?

• Myocardium

• Endocardium

• Epicardium

• Pericardium