OBLIQUE MUSCLES OF THE EYE
\əblˈiːk mˈʌsə͡lz ɒvðɪ ˈa͡ɪ], \əblˈiːk mˈʌsəlz ɒvðɪ ˈaɪ], \ə_b_l_ˈiː_k m_ˈʌ_s_əl_z ɒ_v_ð_ɪ_ ˈaɪ]\
Sort: Oldest first
-
Are two in number. They are distinguished into: 1. Obliquus Superior Oculi, Amatorius musculus, Trochlearis, Trochleator, Obliquus major. Circumductionis opifex, Longissimus oculi, (F.) Optico-trochlei scleroticien, Grand trochleateur (Ch.), Grand oblique de loeil, O. superieur de loeil, Amoureux (Muscle) is situate at the inner and upper part of the orbit. It is small, round, fusiform, and reflected upon itself in the middle of its course. Behind, it is attached to the inside of the foramen opticum; and when it arrives opposite the internal orbitar process, it becomes a small, round tendon, which slides in a cartilaginous pulley fixed to the os frontis, and is reflected, at an acute angle, to proceed downwards and outwards, and to attach itself to the outer and back part of the globe of the eye. This muscle carries the globe of the eye forwards and inwards; making it experience a movement of rotation, which directs the pupil downwards and inwards. This is conceived to be an involuntary muscle as well as the next. In sleep, according to Sir C. Bell, when the power over the straight or voluntary muscles of the organ is nearly lost, the eye is given up to the oblique muscles, which lodge the transparent cornea under the upper eyelid. At the approach of death, the same thing is observable; hence, the turning up of the eye, at such time, is not an evidence of agony or suffering, but of insensibility. 2. Obliquus Inferior seu minor oculi, (F.) Maxillo-scleroticien, Petit Trochleateur (Ch.), Petit oblique ou oblique inferieur de loeil, is situate at the anterior and inferior part of the orbit. It is flat and attached to the inner and anterior part of the orbitar surface of the superior maxillary bone, on the outside of the lachrymal gutter; from thence it passes outwards and backwards, and terminates by an aponeurosis, at the posterior and inner part of the globe of the eye. It carries the globe of the eye inwards and forwards; and directs the pupil upwards and outwards.
By Robley Dunglison
Word of the day
Platidiam
- An inorganic water-soluble platinum complex. After undergoing hydrolysis, it reacts DNA produce both intra interstrand crosslinks. These crosslinks appear to impair replication and transcription of DNA. The cytotoxicity cisplatin correlates with cellular arrest in G2 phase cell cycle.