How Many Elements Have Been Identified

question 95

Multiple Choice

How many elements have been identified?

• A)92
• B)104
• C)114
• D)over 200
• E)none of the above

---

Definitions:

Superior Vena Cava

Large but short vein that carries deoxygenated blood from the upper half of the body to the heart’s right atrium.

Inferior Vena Cava

A large vein that carries deoxygenated blood from the lower and middle body into the heart's right atrium.

Jugular

Relating to the neck or throat, especially with reference to veins that carry blood back to the heart.

Premature Ventricular Contractions (PVCs)

Extra, abnormal heartbeats originating from the ventricles of the heart, which can cause the sensation of a skipped beat or palpitations.