Heart anatomy

Question 1

What is the membrane closest to the heart muscle?

Answer 1

• visceral pericardium

Question 2

Which of the following is an obvious symptom of pericarditis?

• increase in bp
• irregular heart beat
• severe chest pain
• high fever

Answer 2

severe chest pain

• inflammation of the pericardial sac causes an increase in friction between the heart and membranes; this results in severe chest pain

Question 3

When does blood flow into the coronary arteries?

Answer 3

Ventricular diastole

• due to differences in the structure and pressure among vessels leaving the heart, blood actually flows best to the myocardium during ventricular diastole

Question 4

How much blood has already filled the ventricles before atrial systole?

Answer 4

70%

• The atria contracts to eject the remaining 30%

Question 5

Which area contains the tightest epithelial junctions?

• spleen
• skeletal muscle
• brain
• thyroid gland

Answer 5

Brain

• The tight junctions in the cranial capillaries creates a blood-brain barrier, allowing only certain substances to pass

Question 6

Which of the following has no capillaries whatsoever?

• spinal cord
• cartilage
• dermis
• gallbladder

Answer 6

Cartilage

Question 7

What is the longest vein in the body?

Answer 7

saphenous vein

• runs along anterior surface of leg
• used as a graft for coronary bypass procedures