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Which of the following structures contains the vocal cords?

A.

Trachea

B.

Pharynx

C.

Larynx

D.

Epiglottis

Answer and Explanation

The Correct Answer is C

a. Trachea: The trachea is the windpipe, a tube that carries air from the larynx to the bronchi in the lungs. It does not contain vocal cords.

b. Pharynx: The pharynx is a muscular passageway at the back of the throat that connects the nasal cavity, oral cavity, and larynx. It does not contain vocal cords.

c. Larynx: The larynx, also known as the voice box, is located in the throat and contains the vocal cords. These are two folds of muscle that vibrate when air passes over them, producing sound for speech.

d. Epiglottis: The epiglottis is a small flap of cartilage that covers the opening of the larynx during swallowing. It does not contain vocal cords.


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Related Questions

Correct Answer is A

Explanation

a. 1 to 2 liters: Correct. The average adult typically produces about 1 to 2 liters of urine per day.

b. 3 to 5 liters: This is an unusually high amount of urine production and is not typical for most adults.

c. 5 to 7 liters: This is an excessively high amount of urine production and would usually indicate a medical condition.

d. 2 to 4 liters: This range is slightly higher than average but can still be considered normal under certain conditions such as increased fluid intake or diuretic use.

Correct Answer is B

Explanation

a. Releasing stored bicarbonate: This function helps regulate acid-base balance but is not related to red blood cell production.

b. Producing and secreting erythropoietin: The kidneys produce and release erythropoietin, a hormone that stimulates red blood cell production in the bone marrow.

c. Stimulating conversion of angiotensinogen: This is part of the renin-angiotensin system, which regulates blood pressure and fluid balance, not red blood cell production.

d. Activating vitamin D: This function helps in calcium and phosphate metabolism but is not directly involved in red blood cell production.

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