MUSCLE SPINDLES IN HUMAN EXTRINSIC EYE MUSCLES
MUSCLE SPINDLES IN HUMAN EXTRINSIC EYE MUSCLES
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DOI:
10.1093/brain/72.1.1
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发表时间:
1949-01-01
期刊:
影响因子:
14.5
通讯作者:
DANIEL, PM
中科院分区:
文献类型:
--
作者:
COOPER, S;DANIEL, PM
A detailed description of the gross anatomy of the human extrinsic eye muscles is given by Whitnall (1932) and comparative studies may be found in Ovio (1925) and Walls (1942). We need only point out here that the six extrinsic eye muscles of man are long (all about 4 cm.) and delicate. The recti are inserted well anterior to the equator of the globe, whilst the obliques are inserted near the equator. They are thus capable of bringing about big movements of the eyeball and making all those adjustments called for in binocular and stereoscopic vision, and associated with upright posture and the emancipation of the fore-limbs. In animals the range of eye movement varies greatly in the different species, and the gross and microscopic anatomy of the extrinsic eye muscles varies accordingly.Reviews of the. histological characteristics of eye muscles of various animals are given by Hinsey (1934), Irvine (1936), and Lauber (1936). These muscles are composed of parallel cross-striated muscle fibres and according to Lockhart and Brandt (1938) all the fibres in human eye muscles run the full length of the muscle. The muscle fibres are small in diameter compared with those of other somatic muscles but may vary greatly between limits of about 10 to 50 fi across (Wohlfart, 1935; Voss, 1935). Woollard's (1931) discussion of muscle fibre size referred only to the rabbit.