Fibrous structure of connective tissue in the vocal fold of the Japanese monkey (Macaca fuscata).
نویسندگان
چکیده
Fibrous structures in the vocal fold were studied in 8 adult Japanese monkeys. Their vocal folds were fixed with formalin and longitudinal and cross-sections were prepared. Some of the samples were treated with 10% NaOH to digest cellular components and elastic fibers, and some of them were treated with 90% formic acid to digest cellular components and collagen fibers. Each sample was then fixed with OsO4, dehydrated, dried at the critical point, ion-coated, and studied under a scanning electron microscope. The lamina propria mucosae in Japanese monkeys was thinner than that in humans and consisted of a superficial layer rich in connective tissue and a deep layer poor in this tissue. Both collagen fibers and elastic fibers mostly ran straight, and the fiber distribution and morphology slightly differed according to the depth of the layer. Their density was higher in upper layers. In the muscle layer, connective tissue surrounding muscle fibers was scarce. The fibrous structure of the monkey vocal fold is simpler than that of human vocal fold, and these findings reflect the short and monotonous phonation of monkeys.
منابع مشابه
Ogmocotyle ailuri (Price, 1954) (Digenea: Notocotylidae) found in the Japanese monkey, Macaca fuscata.
Several dozens of small trematodes were found in the small intestine of a Japanese monkey, Macaca fuscata, that was captured in Sendai City, Miyagi Prefecture, Japan. The trematode was identified as Ogmocotyle ailuri. This is the first case of a Japanese monkey infected with Ogmocotyle trematodes, and a new host record for O. ailuri.
متن کاملRole of vocal tract characteristics in individual discrimination by Japanese macaques (Macaca fuscata)
The Japanese macaque (Macaca fuscata) exhibits a species-specific communication sound called the "coo call" to locate group members and maintain within-group contact. Monkeys have been demonstrated to be capable of discriminating between individuals based only on their voices, but there is still debate regarding how the fundamental frequencies (F0) and filter properties of the vocal tract chara...
متن کاملIsolation of All Tryptic Peptides from the Aminoethylated β Polypeptide Chain of Adult Hemoglobin from Japanese Monkey (Macaca fuscata fuscata) and their Amino Acid Compositions
Hemoglobin prepared from red blood cells of adult Japanese Monkeys (Macaca fuscata fuscata) was removed heme so that globin was obtained. The • @ globin • @ was • @ separated • @into • @ ƒ¿ • @ and ƒÀ polypeptide • @ chains • @ by • @ countercurrent distribution with the system of sec-butanol containing trichroloacetic acid, propionic • @ acid, • @and • @water. • @ The,ƒÀ • @ polypeptide • @ ch...
متن کاملThe N-terminal structure of adult hemoglobin from Japanese monkey (Macaca fuscata fuscata) and the N-terminal amino acids of all the tryptic peptides from its alpha and beta polypeptide chains.
The N-terminal structure of adult Japanese monkey (macaca fuscata fuscata) hemoglobin and the N-terminal amino acid analyses of the tryptic peptides from this hemoglobin were performed. Hemoglobin, after removal of heme, was dinitrophenylated. The DNP-globin was hydrolyzed with HCl, and from the hydrolysate DNP-derivatives were extracted with ether or ethyl acetate. They were isolated and ident...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Okajimas folia anatomica Japonica
دوره 76 2-3 شماره
صفحات -
تاریخ انتشار 1999