The Second Heart Sound Occurs When the Semilunar Valves Close

question 99

Multiple Choice

The second heart sound occurs when the semilunar valves close.What does this mark

• A)the start of the ejection period
• B)the start of systole
• C)the end of the ejection period
• D)the start of isovolumetric contraction

---

Definitions:

Doritos

a brand of flavored tortilla chips produced by Frito-Lay, a division of PepsiCo.

Contest

A competitive event or situation in which participants strive to win based on skill, ability, or a set of predetermined rules.

Threads Magazine

a publication dedicated to sewing, fabric art, and needlecraft, offering patterns, techniques, and advice to enthusiasts.

Fashion Challenge

A competition or contest often seen on social media or television, where participants create or style outfits under certain constraints or themes.