KINESIOL 1A03 Lecture Notes - Lecture 19: Lacrimal Canaliculi, Nasolacrimal Duct, Lacrimal Gland
26 Dec 2015
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Document Summary
Palpebral fissure- opening between the eyelids canthi- where the two palpebrae meet: medial canthus, lateral canthus. Lacrimal tears and releases them onto the surface of the eye through the lacrimal ducts, the tears move medially/inferiorly towards the medial canthus. 6 muscles that movement of the eyeball control the. 2 oblique muscles- allow for rotation of the eye runs through the trochlea, that acts like a pulley and redirects the line of pull from the muscle, allowing for inferior lateral rotation: inferior. Acts to rotate the eye by moving it to the superior lateral side. 3 coats (tunics) (white of the eye) avascular. Ciliary body- changes the shape of the lens, when the muscle contracts the diameter gets smaller and the tension between the lens/suspensory ligaments reduces and the lens bounces back to its natural spherical shape. Iris- changes the diameter of the pupil, smooth muscles responds to a light reflex.
