EVERYDAY SCIENCE

SCIENCE

SKELETAL SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What are sinuses and what do they do
A
Cavities within the Cranium
B
Holes in the nose
C
Decrease the weight of the skull
D
Decrease the weight of the brain
Explanation: 

Detailed explanation-1: -These sinuses, which have the same names as the bones in which they are located, surround the nasal cavity and open into it. They function to reduce the weight of the skull, to produce mucus, and to influence voice quality by acting as resonating chambers.

Detailed explanation-2: -Sinuses are interconnected cavities in the skull. These cavities are linked to your nasal passages by small channels. The channels let air flow from your nose into the sinuses and allow mucus to drain from every sinus into the nose.

Detailed explanation-3: -Our sinuses are the moist air spaces within the bones of the face around the nose. When we’re healthy, our sinuses are filled with air, making our facial bones less dense and much lighter in weight.

Detailed explanation-4: -The primary function of the ethmoid sinus, like all the sinus cavities in the skull, is to provide lubrication (mucus) to the inner nose. In addition to creating mucus, the sinuses-including the ethmoid sinus-reduce the skull’s overall weight and make one’s voice more resonant as they grow in size during puberty.

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