Index to the 1850, 1860, 1870, 1880, and 1900 U.S. Censuses of Portage County, Wisconsin. About the Portage County Census Index. Please read the introductions that are provided for each individual census index. The indexer has taken great pains to explain various factors that took place during each decade, which may affect your search, such as changes in Portage County political boundaries.
Extrinsic muscles. Definition. noun. A group of muscles lying superficially on a structure, in contrast to intrinsic muscles, which are located deeply. Supplement.For instance, the extrinsic muscles of the tongue include genioglossus muscle, hyoglossus muscle, styloglossus muscle, and palatoglossus muscle.Since they are extrinsic muscles, they are located on the surface of the tongue, and attach the tongue to other structures.xtrinsic muscles. Definition. noun. A group of muscles lying superficially on a structure, in contrast to intrinsic muscles, which are located deeply. Supplement.
Muscles of the orbit are also referred to as the extrinsic (arising externally) or extraocular muscles.There are 6 of these extraocular muscles that control eye movement (cows only have 4 of these), and one muscle that controls eyelid elevation. The origin is the Annulus of Zinn. 2  Rectus muscles are âstraightâ muscles. 3  Inferior rectus: In the neutral position, this muscle is responsible for depression, extorsion (outward, rotational movement) and adduction. 4  During adduction, the inferior rectus is responsible for extorsion, adduction and depression.