A Horizontal Row in the Periodic Table Is Called a

question 34

Multiple Choice

A horizontal row in the periodic table is called a

• A) shell.
• B) subshell.
• C) group.
• D) period.

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Definitions:

Trachea

The windpipe, a tube that connects the larynx to the bronchi of the lungs.

Pharynx

A muscular tube that connects the mouth and nasal passages with the esophagus and larynx, serving both respiratory and digestive functions.

Larynx

The voice box located in the neck that contains the vocal cords; involved in breathing, producing sound, and protecting the trachea.

Epiglottis

A flap of cartilage located at the base of the tongue that prevents food and drink from entering the windpipe during swallowing.