Question

what term means the absence of oxygen from the bodys tissues?
asphyxia
hypoxemia
hypoxia
anoxia
question 12 (2.5 points)
what structure acts as a lid to prevent food from entering the lungs during swallowing?
laryngopharynx
trachea
epiglottis
larynx

Explanation:

First Question (Term for absence of oxygen in body's tissues)

• Asphyxia: Refers to suffocation due to lack of oxygen, not specifically tissue oxygen absence.
• Hypoxemia: Low oxygen in blood, not tissues.
• Hypoxia: Reduced oxygen in tissues (can be partial), not complete absence.
• Anoxia: Defined as complete absence of oxygen in body tissues.

• Laryngopharynx: Part of pharynx, not a lid for lungs.
• Trachea: Windpipe, carries air, not a lid.
• Epiglottis: Flap that closes over larynx (trachea opening) during swallowing to prevent food entry.
• Larynx: Voice box, not a lid for lungs.

Answer:

D. Anoxia

Second Question (Structure preventing food from lungs during swallowing)