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  2. Ethmoid bone - Wikipedia

    en.wikipedia.org/wiki/Ethmoid_bone

    The ethmoid bone (/ ˈ ɛ θ m ɔɪ d /; [1] [2] from Ancient Greek: ἡθμός, romanized: hēthmós, lit. 'sieve') is an unpaired bone in the skull that separates the nasal cavity from the brain. It is located at the roof of the nose, between the two orbits. The cubical bone is lightweight due to a spongy construction.

  3. Trochlear notch - Wikipedia

    en.wikipedia.org/wiki/Trochlear_notch

    The trochlear notch (/ ˈ t r ɒ k l ɪər /), [1] also known as semilunar notch and greater sigmoid cavity, is a large depression in the upper extremity of the ulna that fits the trochlea of the humerus (the bone directly above the ulna in the arm) as part of the elbow joint. It is formed by the olecranon and the coronoid process.

  4. Facial skeleton - Wikipedia

    en.wikipedia.org/wiki/Facial_skeleton

    The facial skeleton comprises the facial bones that may attach to build a portion of the skull. [1] The remainder of the skull is the neurocranium.. In human anatomy and development, the facial skeleton is sometimes called the membranous viscerocranium, which comprises the mandible and dermatocranial elements that are not part of the braincase.

  5. Zygomatic arch - Wikipedia

    en.wikipedia.org/wiki/Zygomatic_arch

    In anatomy, the zygomatic arch, or cheek bone, is a part of the skull formed by the zygomatic process of the temporal bone (a bone extending forward from the side of the skull, over the opening of the ear) and the temporal process of the zygomatic bone (the side of the cheekbone), the two being united by an oblique suture (the zygomaticotemporal suture); [1] the tendon of the temporal muscle ...

  6. Choroid - Wikipedia

    en.wikipedia.org/wiki/Choroid

    The choroid, also known as the choroidea or choroid coat, is a part of the uvea, the vascular layer of the eye. It contains connective tissues , and lies between the retina and the sclera . The human choroid is thickest at the far extreme rear of the eye (at 0.2 mm), while in the outlying areas it narrows to 0.1 mm. [ 1 ] The choroid provides ...

  7. Posterior segment of eyeball - Wikipedia

    en.wikipedia.org/wiki/Posterior_segment_of_eyeball

    The posterior segment or posterior cavity [1] is the back two-thirds of the eye that includes the anterior hyaloid membrane and all of the optical structures behind it: the vitreous humor, retina, choroid, and optic nerve. [2]

  8. Mandible - Wikipedia

    en.wikipedia.org/wiki/Mandible

    The coronoid process is a thin, triangular eminence, which is flattened from side to side and varies in shape and size. The condyloid process is thicker than the coronoid, and consists of two portions: the mandibular condyle, and the constricted portion which supports it, the neck. The condyle is the most superior part of the mandible and is ...

  9. Orbit (anatomy) - Wikipedia

    en.wikipedia.org/wiki/Orbit_(anatomy)

    The lacrimal bone also contains the nasolacrimal duct. The superior bony margin of the orbital rim, otherwise known as the orbital process, is formed by the frontal bone. [7] The roof (superior wall) is formed primarily by the orbital plate frontal bone, and also the lesser wing of sphenoid near the apex of the orbit. The orbital surface ...