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exam #2
| Question | Answer |
|---|---|
| the two skeletal areas of the body where age determinations are made in adults are the | Skull and rib cage |
| There are no bones in the body which allow for ancestry differentiation. true or false | false |
| once bone trauma heals, it is no longer recognizable on the skeleton. true or false | false |
| forensic odontology only uses dental implants in identification procedures. true or false | false |
| Which of the following is not a common aspect of forensic odontology? | conducting an autopsy on a deceased victim |
| The teeth adults have are deciduous teeth. true or false | False |
| The stature of an individual can be determined by analyzing | Long bones of the arm |
| The determination of age based on the teeth is depended on various factors but it is most precise during this age range(s) | 1-5 years of age |
| Traces of blood are found in the car of a murder suspect of a female dancer. He claims that that is his blood from an accidental cut on his arm. What method(s) would you use to best determine the origin of blood? | Y chromosome typing |
| Ethnicity can be determined based on analyses of: | Bones,Teeth, and DNA (all of the above) |
| Which of the following statements is correct? adult humans. normally have a total of; | 8 incisors 4 canines 8 premolars and 12 molars |
| PMI is short for Pre-Meditated investigation. true or false | false |
| the condition used to describe settling of blood in the lowest parts of the body after death in known as | livor mortis |
| the condition used to describe cooling of the body after death is known as | algor mortis |
| the condition used to describe the degree of stiffening of the body after death is known as | rigor mortis |
| Postmortem interval (PMI) is, in all cases, most precisely determined by using algor mortis indicators. | False |
| The term used to denote "before death" is | anterorterm |
| His body is completely stiff and he is situated on his back with his spine curved and the legs and arms drawn upwards and inwards so that the elbows and kneecaps are touching. Which ofthe following would be the most likely causes to explain these finding | After death, the body is drawn into this position as a consequence of the contraction of the powerful contractor muscles in the thighs and upper arms. |
| To determine whether a bloodstain is of human or animal origin, the serologist will preform | a precipitin |
| transport oxygen from the lungs to the body tissues and carry carbon dioxide back to the lungs | Red blood cells |
| Which of the following Statements is correct? the absence of the Duffy antigen is a good indication of : | African descent |
| The clumping together of red blood cells by the action of an antibody is known as | agglutination |
| in routine blood banking, which antigen(s) must be determined in testing for compatibility? | A,B, Rh (All of above) |
| A dead woman is found stabbed to death in the kitchen of a house. . Which of the following statements could explain the appearance of a smooth-edged circular bloodstain 1cm in diameter found on the linoleum flooring? | The blood fell passively onto the floor. |
| Type AB blood contains | both A and B antigens |
| Serology is defined as the examination of body parts. | false |
| Two major chemicals tests for the presence of blood at a crime scene are__________ and _______________. | Luminol and Kastle-Mayer test |
| Luminol undergoes oxidation in the presence of the heme in blood. | T r u e |
| which of the following is NOT considered a biological fluid? | seminal fluid, vaginal secretions, saliva(all of the above) |
| which of the following is NOT a reason for the forensic importance of saliva at a crime scene ? | it can precisely determine the time of the crime |
| Luminol can be used at crime scenes to | detect traces of blood without compromising potential DNA typing |
| the presence or absence of how many antigens determines an individuals' blood type in the A-B-O system (for example blood type AB+)? | 3 |
| an individual who is type O has | both A and B antibodies |
| If blood is found to have both A and B antigens it is typed as | AB |
| Which of the following statements is FALSE? | The Kastle-Meyer test is used to determine whether blood is of human origin. |
| The amount of spatter from a blood droplet falling on a hard, non-porous surface is ____________ that of a drop of blood of equal size, falling from the same distance, onto a softer, porous surface. | greater than |
| Which of the following could be classed as 'transfer bloodstains? | blood smears on a tap that has been grasped by someone with bloody hands |
| what impact does ultraviolet light have on saliva samples in forensic investigation? | it causes cloudy borders and interior of the saliva stain. |
| What is a characteristic of the PhadebasA@ amylase press test? | It can provide quantifiable results by measuring the intensity of the blue color |
| Which of the following is NOT a method to test for the presence of semen? | BBQ flame test |
| what is unique about Kernechtrot-picroindigocarmine (KPIC) stain used in sperm cell detection? | It stains the head of the sperm cell where the DNA is red, and the tail region green. |
| what are the components of vaginal discharge and what factor influence its volume? | the vaginal discharge contains epithelial cells, white blood cells, bacteria, and its volume varies depending on the age, time of menstrual cycle, sexual arousal and medications |
| What is the main reason urine at crime scenes isn't the best source of DNA? | Urine contains a small number of epithelial cells |
| Which of these statements is NOT an accurate representation of how feces can contribute to criminal investigations? | Feces is the preferred source for DNA analysis in criminal investigations due to the high number of epithelial cells. |
| presence of larger amount of fat in an individual can lead to _______ after death: | Formation of adipocere |
| The central cavity of the diaphysis of along bone called the ____________. | marrow cavity |
| Which of the following is the correct sequence of events in the healing of a bone fracture? | hematoma formation> soft callus formation > hard callus formation >bone remodeling |
| What structure in skeletal muscle cells functions in calcium storage? | Smooth endoplasmic reticulum |
| The living part of the tooth containing live cells, blood vessels and nerves is named: | pulp |
| Antigens are molecules found on: | cells, bacteria, viruses, foreign bodies (all of the above) |
| The formula sin 0 = width of stain divided by length of stain 0= sin -1( width of stain divided by length of stain) | distance from blood drop to point of origin |
Created by:
Forensics2025