Biomaterial Database

Number, length and localization of muscle spindles in recti muscles of the eyeball in human fetuses. 1997

K Wójtowicz-Kaczmarek

Department of Anatomy, Karol Marcinkowski University School of Medical Sciences, Poznań.

Studies were performed on recti muscles of the eyeball, isolated from human fetuses in 14th to 24th week of their development. Number of muscle spindles and their length increased with progressing age of the fetuses. Most numerous muscle spindles were present in the rectus inferior muscle. The spindles were spread along the entire length of the muscle. Somewhat more numerous spindles were present in the half of the muscle belly positioned from the side of original attachment (24th week). Spindles were localized in the peripheral part of the muscle.

UI	MeSH Term	Description	Entries
D009132	Muscles	Contractile tissue that produces movement in animals.	Muscle Tissue,Muscle,Muscle Tissues,Tissue, Muscle,Tissues, Muscle
D009470	Muscle Spindles	Skeletal muscle structures that function as the MECHANORECEPTORS responsible for the stretch or myotactic reflex (REFLEX, STRETCH). They are composed of a bundle of encapsulated SKELETAL MUSCLE FIBERS, i.e., the intrafusal fibers (nuclear bag 1 fibers, nuclear bag 2 fibers, and nuclear chain fibers) innervated by SENSORY NEURONS.	Muscle Stretch Receptors,Neuromuscular Spindles,Receptors, Stretch, Muscle,Stretch Receptors, Muscle,Muscle Spindle,Muscle Stretch Receptor,Neuromuscular Spindle,Receptor, Muscle Stretch,Receptors, Muscle Stretch,Spindle, Muscle,Spindle, Neuromuscular,Spindles, Muscle,Spindles, Neuromuscular,Stretch Receptor, Muscle
D005123	Eye	The organ of sight constituting a pair of globular organs made up of a three-layered roughly spherical structure specialized for receiving and responding to light.	Eyes
D005314	Embryonic and Fetal Development	Morphological and physiological development of EMBRYOS or FETUSES.	Embryo and Fetal Development,Prenatal Programming,Programming, Prenatal
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man