Local Control Of Blood Flow Part 3

Question 1

Long-term mechanical pressure -> prolonged period of subnormal blood flow -> reversible tissue damage -> __________ tissue damage -> cell death

Answer 1

Irreversible

Question 2

Mechanical compression during ventricular systole ______ the blood flow to the left but not right coronary blood vessels

Answer 2

Reduces

Question 3

Most of the blood needed to support left ventricular metabolism must be delivered during ventricular _______ when the vessels are not compressed

Answer 3

Diastole

Question 4

Mechanical compression has _____ influence on blood flow to the right coronary vessels

Answer 4

Little

Question 5

Magnitude of right coronary blood flow closely follows the changes in _______ pressure because the right ventricle contracts with much less force than the left ventricle

Answer 5

Arterial

Question 6

Animals with coronary artery disease will have exercise intolerance because ventricle __________ develops during exercise in patients with coronary artery disease

Answer 6

Ischemia

Question 7

Pulmonary vessels are susceptible to _________ under the influence of mechanical compression

Answer 7

Narrowing

Question 8

Pulmonary vessels have ________ compliance

Answer 8

Greater

Question 9

There is less intravascular _______ in a pulmonary vessel to oppose any external force acting to compress the vessel

Answer 9

Pressure

Question 10

An abnormal elevation in airway pressure can _______ pulmonary blood vessels, which could happen when a tracheal tube is attaches to a source of elevated pressure

Answer 10

Compress

Question 11

Alveolar pressures exceeding 10-15mm Hg compress pulmonary vessels sufficiently to _____ the resistance to blood flow through the lungs

Answer 11

Raise

Question 12

With extremely high airway pressures, the _____ ventricle may be unable to raise the pulmonary arterial pressure high enough to sustain flow

Answer 12

Right