5 Interesting Facts About Your Head!
Posted Oct 26, 2022 at 14:24
Posted Oct 26, 2022 at 14:24
You have 3 bones in each ear
Hammer (malleus) attaches to the eardrum, anvil (incus) is in the middle, and the stirrup (stapes) attaches to the membrane covered opening connecting the middle ear to inner ear
You have 22 bones in your skull
8 bones in the cranium (1x ethmoid; 1x frontal; 1x occipital; 1x sphenoid; 2x parietal; 2x temporal) and 14 bones in the face (2x inferior nasal concha; 2x lacrimal; 2x maxilla; 2x nasal; 2x plantine; 2x zygomatic; 1x mandible; 1x vomer)
You have 9 muscles in each ear
3 extrinsic muscles (anterior, superior and posterior auricular), 6 intrinsic muscles (helicis major; helicis minor; tragicus; antitragicus; transverse, and oblique muscles)
You have 6 muscles in each eye
Medial, lateral, superior and inferior rectus, and superior and inferior oblique
You have 12 nerves that come directly from your brain
12 cranial nerves (CN I: olfactory; CN II: optic; CN III: oculomotor; CN IV: trochlear; CN V: trigeminal; CN VI: abducens; CN VII: facial; CN VIII: vestibulocochlear; CN IX: glossopharyngeal; CN X: vagus; CN XI: accessory; CN XII: hypoglossal)