Cardiopulmonary I (WEC 1 Anatomy and Physiology)

Pulmonary veins carry_________

• Oxygenated blood

• Deoxygenated blood

• Yellow Blood

• Green Blood

An infarction in this coronary artery is deemed the "Widow Maker"?

• Circumflex artery

• Right coronary artery

• Coronary veins

• Left anterior descending artery

A Pt. experienced increased work of breathing during a 6-MWT. Which muscles are activated to assist with inspiration.

• Diaphragm and External Intercostals

• Diaphragm and Internal Intercostals

• Abdominals and Internal Intercostals

• Abdominals and External Intercostals

Sympathetic autonomic regulation of the heart causes all of the following except_______.

• Positive chronotropic effects

• Vasodilation of coronary arteries

• Vasoconstriction of the coronary arteries

• Increased myocardial contractility

If a patient is 38 years young with a resting heart rate of 68 bpm, what is the individuals heart rate reserve (HRR)?

• 182 bpm

• 114 bpm

• 252 bpm

• 150 bpm

What period of the cardiac cycle represents the ventricles contracting and expelling blood into the aorta and pulmonary artery in the cardiac cycle?

• mid to late ventricular diastole phase

• Early (Isovolumetric contraction) ventricular systole phase

• mid to late ventricular Systole phase

• Early diastole

In a healthy heart, preload is directly proportional to____________.

• Stroke volume

• Heart rate

• Blood pressure

• Afterload

Which statement is true regarding cardiac output?

• The higher the afterload, the more easily blood is ejected from a ventricle

• SV is the percent of blood pumped out of a ventricle with each contraction

• An inverse relationship exist between venous return and preload

• Within limits increased venous return= a greater volume of blood ejected from the heart

The Bundle of His when acting a the secondary pacemaker of the heart has an intrinsic firing rate of ___________.

• 60-100 bpm

• 20-40 bpm

• 40-60 bpm

• 100-120 bpm

All of the following are impacts of aging on cardiovascular physiology, except________.

• Left ventricular wall thickening (decreased compliance)

• Decreased vascular thickness (increased compliance)

• Decreased HR and SV

• Decreased cardiac output