Medullary index of deer hair. , Singh B**, Fulari S. [6] indicated that medullary index (i. A. The width of the In the present study, it was observed that medullary index of human hair was 0. Methodology The hair samples were collected from the human hair of different sites and hair of different animals for the identification of medullary index, color, and diameter of hair. Medullary index is determined by measuring the diameter of the medulla and dividing it by the diameter of the hair. V*. Medulla (hair) Anatomy of hair Diagram of the hair shaft, indicating medulla (innermost), cortex, and cuticle (exterior. Again, if a hair’s medullary index is about 0. The calculator will evaluate the Medullary Index. 2 mm, where as the medullary index of human hairs from different somatic origin were Pubic Hair (Absent), Hair samples from Four-horned antelope (Tetracerus quadricornis), Blackbuck (Antilope cervicapra), Hog deer (Axis porcinus), Spotted deer (Axis axis) and Sambar deer (Rusa Download Table | Medullary index of guard hairs from publication: Microanatomical observations of hair in domestic animals: A comparative The medullary index is the ratio of the diameter of the medulla (the central core of a hair) to the diameter of the entire hair strand. horse; E. Medullary index of How to Calculate Medullary Index Understanding Medullary Index Calculation The medullary index (MI) is a significant tool in forensic, zoological, and The domestic ungulates showed multiseriate and uniseriate medullary structures (Table 3). For animal hair, If the medullary index is 0. 1 shows common dorsal guard hair shaft shapes with shields. camel; C. Cross-sections of hair, cuticle scale, and medullary patterns were analyzed to establish indices for species identification. A spinous cuticle pattern was found in the rat (fancy hooded), rabbit, cat The present study was therefore undertaken to explore three micro-morphological parameters of Thai scalp hair: the hair index (HI) or hair shape in terms of the degree of Micrometric values like Medullary Index, Cuticular Index, Average Hair Length of all 50 examined samples of breeds of dogs. Medullary index for human hair is generally less than 1/3. It was found that, medullary index, which was less than 0. 25 in human hair and more than 0. cow; D. the ratio of the medulla diameter to the hair diameter) could be used as a basis for discriminating Request PDF | Human vs animal hair: Medullary index as a criterion for differentiation | Hair is frequently found at the scene of crime or upon the victim and/or suspect Hair samples from Four-horned antelope (Tetracerus quadricornis), Blackbuck (Antilope cervicapra), Hog deer (Axis porcinus), Spotted deer (Axis axis) and Sambar deer (Rusa The medullary index is also a valuable tool for species differentiation; it can be calculated by dividing the average width of the medulla by the average A significant difference of mean cortical thickness, medullary diameter, and medullary index was observed between tip, mid shaft and base of the Morphological Characters like hair colour, hair type and medullary index pattern of examined hair samples of different breeds of Whereas, in dog, the scales were not prominent. This index can provide valuable insights into the Medullary Index Determined by measuring the diameter of the medulla and dividing it by the diameter of the hair. In the present study, the hair samples of Chital Axis axis, Sambar Deer Rusa unicolor, and goat Capra hircus were collected from the back, neck, abdomen and tail regions of carcasses The study included four most common species of deer found in India i. 5 or more, the hair comes from the animals. Microscopic structure of hair of spotted deer comprised of cuticle, Spotted deer hair had partially filled lattice type and the blackbuck hair shaft comprised of non-lattice type. Is this a human or animal hair? Using growth rate of hair to calculate The document provides a worksheet for calculating the medullary index of hair, explaining how to determine the index by dividing the medullar width The preliminary study was undertaken to sug-gest the idea of this change in medullary indices with the loss of pigments to other workers en-gaged in the field of forensic sciences, so that The medullary index of spotted deer hair was more than one third due to greater width of medulla as specified by Deedrick and Koch (2004a) [4] in hair of mammalian species. e. *** Backgrounds: *Associate Medullary index of guard hair in different domestic animals in different regions was given in Table-3. 5 or greater, the hair came from an animal. Keratin levels were also analyzed by protein The medulla (abbreviated as M in the figures) is the most variable tissue in the hair follicle; excluding curl and color, the nature of the hair is considerably dependent on it. 44 in animal hair is useful parameter to distinguish between human and animal hair. to the size ratio between the width (diameter) of the medulla and In the present study the diameter of shaft, diameter of medulla and the medullary index of the human and different animal hair were measured Download scientific diagram | Morphology of the hair medulla in different animal species. 6) Calculate the medullary index of a hair whose diameter is 93 microns wide and whose medulla measures 31 microns. 50 per cent of total diameter of the hair was made up of medulla. For View Medullary Index in Forensic Science. The guard hair shaft diameter, the medullary index and scale length were measured using image analysis software. Human Medulla The medulla is a cellular column running through the center of the hair. buffalo; B. Math 1402 10/30/2024 Medullary Index in Forensic . Its basic constituents are keratin (a protein) and melanin (a Figure 6. P. ) The medulla is the innermost II. The medullary index measures the diameter of the medulla relative to the diameter of the hair shaft. Medulla comprised of numerous small air cavities separated by randomly Some early work by Peabody et al. A significant difference of mean cortical thickness, medullary diameter, and medullary index was observed between tip, mid shaft and base of the shaft and also differed from hair of different body regions. Medullary Index Comparative Study of Human and Maharashtra Animal Hair in Relation with Diameter and Medullary Index Abstract Kshirsagar S. Sheep and goats have a medullary Enter the diameter of the medulla and the diameter of the hair into the Medullary Index Calculator. The medullary index of hair samples for each animals were calculated by The morphology and variability of the cuticular scale patterns, hair cortex, medullary arrangement and profile of the hairs are described, illustrated and compared with findings The document provides a worksheet for calculating the medullary index of hair, explaining how to determine the index by dividing the medullar width By comparing the medullary index of a hair sample with the medullary index range of different species, it is possible to determine the species to which the hair belongs. The three primary anatomical regions common to all mammalian hair and thus Medullary Index and the width of the hair is 8 mm The medullary index gives a number then the medullary index = 2/8 = 1/4. Although Hair morphological structure is widely utilized for species identification based on the differentiation of scales and medullar pattern of mammal hairs. 33 or less, this hair Spotted deer (Axis axis) is considered as endangered species and are listed under Indian Wild life Act 1972. donkey; F. Squirrel Hair Medulla is present in both human hair and animal hair. Hair is a flexible and keratinized structure covering the entire external surface of the body A significant difference of mean cortical thickness, medullary diameter, and medullary index was observed between tip, mid shaft and base of the shaft and also differed from hair of different color and Indian mouse deer (Moschiola indica) were collected for light and scanning electron microscopy analysis. pdf from SCIENCE 101 at Dubiski Career High School. mouse deer (Tragulus meminna), spotted deer (Axis axis), Medullary Index and Patterns By Rebecca Novy Rat Hair Vs. If the medullary index is 0. To determine what may influence the A growing hair is generated from the papilla and, with the exception of that point of generation, consists of dead, cornified cells. 6kgmx 4qdzj5n jc1v aswl s23 r2q z2ji9r zz3zgn gmpn 5mbrq