## Abstract During their embryogenesis, marsupials develop a unique structure, the shoulder arch, which provides the structural and muscleβattachment support necessary for the newborn's crawl to the teat. One of the most pronounced and important aspects of the shoulder arch is an enlarged coracoid.
Developmental study on reduction and kinks of the tail in a new mutantknotty-tailmouse
β Scribed by T. Matsuura; Isao Narama; Kiyokazu Ozaki; Masahiko Nishimura; Tomohiro Imagawa; Hiroshi Kitagawa; Masato Uehara
- Publisher
- Springer
- Year
- 1998
- Tongue
- English
- Weight
- 819 KB
- Volume
- 198
- Category
- Article
- ISSN
- 0340-2061
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## Abstract The development of muscle spindles was studied using the tenuissimus muscle of the cat. Observations show that the intrafusal muscle fibers develop as two separate groups: one group represented by a single nuclear bag fiber while the second group comprises the second nuclear bag fiber i