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Friction ridge quiz
Friction ridge quiz 1
| Question | Answer |
|---|---|
| The key elements of the WHMIS system are | hazard classification, cautionary labelling of containers, the provision of safety data sheets (SDSs) and worker education and training programs |
| WHMIS first became law | effective October 31st, 1988 |
| WHMIS was updated in | 2015 |
| WHMIS was updated again in | 2022 |
| suppliers | Products that are covered by WHMIS are known as "hazardous products" |
| suppliers | must label their products & provide a safety data sheet (SDS) to their customers. The SDS explains the hazards and safe handling procedures for the product, while the label provides a summary of information that is immediately available to the worker. |
| employers | Must provide education and training programs for workers exposed to hazardous products in the workplace. Employers must also ensure products are labelled and that SDS’s are readily available to workers |
| workers | Required to participate in the education, training programs and to use this information to help them work safely with hazardous products |
| 4 components to WHMIS | Safety data sheets, worker education and worksite training, labels, hazard identification and product classification |
| safety data sheets (SDS) provide | 1. Identification of the product and supplier 2. Hazard identification 3. Prevention 4. Response |
| A workplace label is required when: | hazardous product is produced (made) at the workplace and used in that workplace, a hazardous product is decanted (e.g., transferred or poured) into another container or, a supplier label becomes lost or illegible (unreadable) |
| Sequential Processing | 1. Visual exam- examine an item by looking at it in ambient light 2. White light - examine an item with the aid of a strong white light at oblique angle 3. Forensic light source - use a Laser or Alternate Light Source to see if something will fluoresce |
| friction ridge: | Corrugated condition of the skin that gives a gripping surface to hands and feet, Raised layers of skin with openings for sweat glands found on the inner surface of hands and soles of the feet. Also referred to as volar skin |
| What are the two main layers of skin? | Epidermis - outer layer Dermis - inner layer |
| The epidermis is made up of several layers. What is the deepest layer? | Basal layer |
| What is the basal layer’s function? | Plays a key role in generating new cells. Often referred to as the generating layer. |
| What can cause a friction ridge to change? | Cuts that damage the basal layer can cause permanent scarring. Certain skin diseases |
| What are the creases in the hand called? | Flexion creases |
| Explain the term Typical Arrangement? | Formation of volar pads on the hands and feet are similar in all humans. All mammals have the same formation specific to their species |
| Henry Classification System, and what are the three main patterns | Loops, Whorls, and Arches |
| What are the main features of a loop pattern? | Core, delta, recurve, and ridge count |
| How many types of arches? | Two - plain and tented |
| What two main factors determine a whorl pattern? | One or more recirculating ridges and two points of delta |
| 4 types of prints at crime scene | latent, patent, mold/plastic, takeaway |
| 4 identifiers when print is developed | 1. R number 2. Initials 3. Date 4. Location or Occurrence # |
| Palms have a combination of | deltas, loops, whorls, and arches. |
| The palm can be broken down into three anatomical areas. These areas correspond to the development of the volar pads (refer to Typical Arrangement) | 1. Interdigital area 2. Thenar area 3. Hypothenar area |
| Radial Longitudinal Crease | referred to as the "lifeline", curves along the border of the thenar area of the palm, forming a semicircle. |
| Proximal Transverse Crease | Separates the interdigital area from the thenar |
| Distal Transverse Crease | Separates the interdigital area from the hypothenar |
| Creases that branch off are referred to as | “major accessory creases”. They are part of a secondary group of creases |
| Longitudinal (finger) Creases | Run lengthwise from the base of the little, ring, and middle fingers, to the center of the wrist |
| Accessory Distal Transverse Crease | Between the base of the fingers and the distal transverse crease. It runs under the 3rd, 4th, and sometimes 5th digit. Not present in all palms and can be a short simple crease or have several branches |
| “E” Lines | Found on the outside edge (ulnar edge) between the base of the little finger and the distal transverse crease |
| Hypothenar Crease | Located in the hypothenar area, generally curved to the ulnar edge, and is a short ridge. |
| The third group of creases are the | Secondary Creases. They encompass most of the remaining creases on the palmar surface |
| Major Accessory Creases - | branch off the major creases |
| Hatch Creases - | in the hypothenar area on the ulnar edge |
| Checker Creases or Basket Weave - | found in the thenar area, under the thumb. |
| Wrist Creases - | found at the base of the palm above the wrist |
| Carpal Delta - | ridge flow from the hypothenar meets the ridge flow of the thenar. The position differs among ppl & may be located at base of the hand near the wrist or higher up in the palm. always be near the center of the palm in between the hypothenar and thenar area |
| Hypothenar Ridge Flow | Loops, whorls, and arches may be found in this area. Distinguishable by their large size |
| Thenar Area - | half-moon pattern in concentric curves around the thumb |
| Vistage - | an area at the top of the thenar |
| Starburst - | an area at the base of the thumb. Area does not usually record on a substrate. Helps to orientate the palm |
| palmar flexion creases | formed prior to birth, Heredity may influence the path, a class characteristic (shouldnt be used to individualize), help with orientation, minor creases formed randomly, |
| biometrics | refers to using unique biological measurements or features to identify individuals. |
| 2 main purposes of AFIS | determine if person has a criminal record and search prints found at crime scenes |
| fundamental stages of AFIS | 1) Data acquisition - sense print to be recognized 2) feature extraction - extracts a pattern from sensed image 3) decision making - information extracted from the recognized image is compared with images stored in the system. |
| AFIS | stand alone withiin an agency |
| IAFIS | integrated, links agencies together to compare and share evidence |
Created by:
skyep25