Video 3

What causes the differences in people's voices, such as pitch and character?

• The amount of air pumped by the lungs.

• The shape and size of the vocal cords.

• The size of the mouth and tongue.

• The strength of the diaphragm.

What is the primary mechanism by which sound is produced in the human body?

• Air from the lungs vibrating the tongue.

• Air from the lungs vibrating the vocal cords.

• Air from the stomach vibrating the esophagus.

• Air from the nose vibrating the nasal passages.

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What are vocal cords primarily composed of?

• Bone tissue.

• Cartilage.

• Elastic muscle layers.

• Connective tissue.

Why are male voices generally lower in pitch than female voices?

• Males have larger lung capacity.

• Male vocal cords are typically thicker.

• Males have stronger vocal muscles.

• Male vocal cords vibrate faster.

What is the main reason for temporary voice loss, also known as laryngitis?

• Overuse of the vocal cords.

• Swelling of the vocal cords.

• Damage to the vocal cords.

• Lack of hydration.