The Major Virulence Factor of Corynebacterium Diphtheriae That Causes Serious

question 55

Multiple Choice

The major virulence factor of Corynebacterium diphtheriae that causes serious systemic effects is

• A)the capsule.
• B)the metachromatic granules.
• C)its exotoxin.
• D)the endospores.
• E)its endotoxin.

---

Definitions:

Bundle of His

A collection of heart muscle cells specialized for electrical conduction that transmits the electrical impulses from the AV node to the point of the apex of the fascicular branches.

Pulmonary Veins

Blood vessels that carry oxygenated blood from the lungs to the left atrium of the heart.

Left Atrium

The heart's upper left chamber that receives oxygen-rich blood from the lungs and pumps it into the left ventricle.

Fossa Ovalis

A depression in the right atrium of the heart, the remnant of the fetal foramen ovale.