Ethmoid Bone

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ETHMOID

It is a light, spongy, irregular, odd bone and is located in the anterior part of the skull.

It has 4 parts:

1 Horizontal Blade (screen)
1 Perpendicular Blade
2 Side Masses (Labyrinths)

Horizontal Blade (Sieve)

Galli Crest & #8211; triangular process in the midline

Olfactory foramen & #8211; it is located next to the Galli crest and gives way to the olfactory nerves

Perpendicular Blade

Flat blade forming the median wall of the nasal septum

Side Masses (Labyrinth)

Uncinated Process

Upper Nasal Shell

Middle Nasal Shell

The ethmoid articulates with thirteen bones: Frontal (1), Sphenoid (1), Nasal (2), Lacrimal (2), Jaw (2), Palatine (2), Lower Nasal Shells (2) and the Vömer (1) ).

ETMOIDE & #8211; UPPER VIEW

Source: SOBOTTA, Johannes. Atlas of Human Anatomy. 21st. Rio de Janeiro: Guanabara Koogan, 2000.

ETMOIDE & #8211; SIDE VIEW

Source: SOBOTTA, Johannes. Atlas of Human Anatomy. 21st. Rio de Janeiro: Guanabara Koogan, 2000.

ETMOIDE & #8211; RELATIONSHIP WITH FACE BONES

Ethmoid Bone - Relationship with Face Bones

Source: SOBOTTA, Johannes. Atlas of Human Anatomy. 21st. Rio de Janeiro: Guanabara Koogan, 2000.

Neurocranium
Eight (08) bones

Frontal (01)
Occipital (01)
Sphenoid (01)
Thunderstorm (02)
Parietal (02)