- | P a g e
BIO 669 EXAM 2 AND STUDYGUIDE NEWEST
2025 ACTUAL EXAM COMPLETE 150
QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS) |ALREADY
GRADED A+||BRAND NEW!!
The development of atherosclerotic plaques involve the
formation of foam cells, which are best described as:
- Transformed fibroblasts
- Cytokine secreting adipose cells
- Macrophages that engulf oxidized LDL
- Endothelial cells that produce the gas nitric oxide -
CORRECT ANSWER -C. Macrophages that engulf oxidized LDL
The isovolumetric contraction phase of the cardiac life cycle
occurs: 1 / 4
- | P a g e
- During atrial systole
- When the AV valves are closed
- When the SL valves are open
- During diastole - CORRECT ANSWER -B. When the AV
valves are closed
Choose the correct conduction pathway for a cardiac action
potential:
- SA node to AV node to bundle branches to othe Bundle of
HIS to purkinje fibers
- SA node to AV node to Purkinje fibers to bundle of HIS to
bundle branches
- SA node to bundle of HIS to AV node to bundle branches to
purkinje fibers 2 / 4
- | P a g e
- SA node to AV node to bundle of HIS to bundle branches to
purkinje fibers - CORRECT ANSWER -D. SA node to AV node to bundle of HIS to bundle branches to purkinje fibers
Which of the following vessels carries oxygenated blood?
- Inferior vena cava
- Superior vena cava
- Pulmonary artery
- Pulmonary Vein
- Inferior vena cava and superior vena cava - CORRECT
ANSWER-D. Pulmonary vein
Which of the following can form an embolus?
- Fat 3 / 4
- | P a g e
- Amniotic Fluid
- Air
- Bateria, especially within clots
- All of the above can become an embolus - CORRECT
ANSWER-E. All of the above can become an embolus
An increase in Ca++ influx, brought about by catecholamines
binding to beta receptors on the myocardium will result in:
- An increase in cardiac contractility
- An increase in speed of heart rate and electrical conduction
through the heart
- An increase in preload
- / 4