PSE 1 review part 10 (cardiovascular)

1. What is NOT a function of the cardiovascular system?

• 1. Maintenance of acid base balance

• 1. Regulating immune function

• 1. Transport of hormones

• 1. Controlling the sympathetic nervous system

1. What is the name of the membranous sheath of the heart?

• 1. There is no membranous sheath around the heart

• epicardium

• myocardium

• pericardium

the heart send deoxygenated blood to the lungs via the left atria/ventricle

• true

• false

1. Which region of the heart is matched to its function INcorrectly?

• 1. Pulmonary artery: carries blood to the lungs

• 1. Superior vena cava: After circulating the blood returns to the heart

• 1. Inferior vena cava: After circulating the blood returns to the heart

• 1. Right side of the heart: called systemic side

1. What is wrong about the myocardium?

• 1. the term refers to the collection of cardiac muscles

• 1. Myocardial thickness depends on the amount of stress placed on the location

• 1. The left ventricle is the most powerful pump of the heart

• 1. Hypertrophies as a result of several diseases, such as high blood pressure.

1. What is wrong about muscles in the heart?

• 1. Myocardial fibers are heterogeneous.

• 1. Myocardial fibers have all the same fiber type.

• 1. Intercalated disks contain the gap junction between the fibers.

• 1. Intercalated disks contain desmosomes, which anchor the cells together

1. Which of the following characteristics are matched correctly to skeletal muscle (SM) or cardiac muscle CM?

• 1. SM: adjacent to the great vessels (e.g., aorta)

• 1. CM: unbranched and arranged in parallel striped bundles of long fibers

• 1. CM: involuntary contraction

• 1. SM: strong, quick, continuous rhythmic contraction

1. What is true about coronary arteries?

• 1. the primary nourishment of the heart is provided by coronary arteries

• 1. coronary arteries encircle the aorta

• 1. the right coronary artery supplies the left side of the heart

• 1. the left coronary artery divides into the aorta and the inferior cava vein

1. Which of the following is NOT a primary component of the cardiac conduction system?

• 1. SA node

• 1. CM node

• 1. AV node

• 1. HIS bundle

1. What is NOT true about cardiac conduction?

• 1. The heart stimulation has nothing to do with the autonomic nervous system

• 1. The heart generates its own electrical signal

• 1. In ventricular systole, blood is expelled into aorta and pulmonary arteries

• 1. A heart beat consists of a systole and a diastole