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Blood& Bodily Fluids
| Question | Answer |
|---|---|
| Whole Blood | raw blood from the body containing all the components of the blood |
| RBC | red blood cells : carry oxygen to the cells of the body on a molecule called hemoglobin |
| WBCs | white blood cells : numerous types of cells that fight foreign agents in the body (sickness…) |
| Platelets | elements in the blood that form clots to stop blood loss |
| Plasma | the liquid portion of the blood, including many different kinds of proteins and antibodies |
| Serum | liquid part of the blood without clotting proteins |
| serology - study of body fluids | study of body fluids |
| Viscous | ?? Forms clots: proteins and blood cells separate from the serum over time |
| Exsanguination | bleeding to death from excessive blood loss |
| Passive bleeding | blood that flows |
| Projected bleeding | applied by a force |
| Arterial spurt | blood expelled from a cut artery |
| trauma | blunt object creating blood splatter |
| satellites | contact casts rings around the central blood drop |
| splines | extensions from the parent drop and satellites |
| Point of convergence | two dimensional map showing the pathway of blood splatter travel |
| Point of origin | three dimensional map showing not only pathways (point of convergence) but also the angle of impact |
| Void Patterns | absence of blood indicates a person or object in the path of the blood splatter |
| Transfer Patterns | an image formed when an object stained with blood comes into contact with an unstained object |
| fabric | soaks up blood in predictable patterns |
| flat | forms a patch where contact is made with blood |
| wrinkles | leaves blank spots where the fabric is bent or creased |
| Kastle-meyer test | phenolphthalein causes blood to turn dark pink |
| TMB (tetramethylbenzidine) test | blood is collected with a swab and applied to a chemical strip containing TMB |
| luminol | chemical that reacts with the hemoglobin (iron) in the blood and fluorescent (gives off light) |
| fluorescein | reacts like luminol, but isn’t affected by cleaning agents |
| Putrefaction | decay of cells due to bacteria and other decomposing agents |
| Rh factor | Rh factor - protein present in the blood (+=have it -= doesn’t have it) |
| antigens | chemical markers on the blood cells - proteins (mark the red blood cells) |
| antibodies | proteins produced to fight foreign cells (y shaped) |
| Genotype | gene code that determines blood type |
| Phenotype | expression of the gene (blood type) |
| Low velocity spatters | blood is moving less than 5 ft per second |
| Medium Velocity Spatter | splatter that moves from 5-100 feet per second |
| High Velocity Spatters | splatter that moves in excess of 100 feet per second |
| Blowback splatter | droplets travel in a direction opposite the weapon |
| forward splatter | droplets of blood near the exit wound |
| Expirated blood | blood that results from breathing out during bleeding |
| Cast-off blood | blood flung from an object due to centrifugal (arching) force |
Created by:
jadegoehring
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