BioMed EOC

3 parts of crime scene sketch?

Legend, Key, Sketch

Scene Sketch Methods? (6 of them)

Pattern, Line (strip), Grid, Zone, Spiral, Wheel/Ray

Define: Person of Interest

Someone who law enforcement thinks may have information related to a possible crime

Define: Polygraph test

A test sometimes used in forensic cases to determine the truthfulness of someone who may be connected to a possible crime, also known as lie detector tests

Define: Vital Signs

Measurements(pulse rate, temperature, respiration rate, blood pressure) that indicate the state of a patient’s essential body functions

Define: Baseline/Control Group (for forensics)

The group in an experiment where the variable is left alone to serve as a standard for comparison to the group being tested.

Define: Heart Rate

How many times your heart beats in one minute

Define: Blood pressure

Force of blood on blood vessel’s walls

Define: Respiration Rate

How many breaths taken in one minute

Define: Skin Conductivity

How the amount of sweat produced impacts the ability to conduct electricity

Experimental design step (6)

Identify the question, make a prediction, design an experiment, conduct experiment, analyze data, communicate findings

Forensic Footprints

evidence that can be examined to trace our activities and provide a record of where we have been

Digital Footprints

evidence that can be analyzed from things online

Trace evidence

tiny fragments of physical evidence such as hairs, clothing fibers, carpeting, pieces of glass

Locard’s Principle

Every time you make contact with another person, place, or thing, it results in an exchange of physical materials

Cortex:

 hair shaft is located between the hair cuticle and medulla and is the thickest hair layer

Cuticle:

the hair strand's outermost layer that offers a natural color and protects it from damage

Medulla:

Innermost layer of hair

Anagen:

the hair grows

Catagen:

The follicle Shrinks

Telogen:

The hair sheds

List the 4 different fingerprint patterns

Loop, whorl, arch, tented arch

Minutiae:

Tiny fingerprint patterns experts use to compare fingerprints

What is a erythrocyte?

red blood cell

What is a leukocyte?

White blood cell

What is thrombocytes?

Platelets

What does plasma do?

redistributes water where your body needs it

What does erythrocyte do?

carries oxygen to the body

What does a leukocyte do?

Fights infection and diseases

What does thrombocyte do?

Prevents and stops bleeding

Presumptive Blood testing:

Initial testing that suggests a sample is blood- identifies the properties of hemoglobin

Confirmatory Blood testing:

confirms the presence of blood at a crime scene. test antigens in blood

Presumptive test types:

Leukocrystal Violet (LCV), Luminol, Kastle-Meyer

Define: Antigens

Anything that stimulates a immune response

Define: Aggulation

The clumping of blood particles

Universal Blood Donor

type o blood

Universal recipient

AB positive

Different ways blood can be on a surface?

Transfers, spatters, falling droplets force and direction, radial spatter

Define: Phosphate

a sugar, one of four nitrogenous bases

What does Deoxyribose sugar do?

Connects DNA bases

Define: adenine

A component of nucleic acids found in DNA and RNA. Is a purine base.

Define: Cytosine

A component of nucleic acids; a pyrimidine base

Define: Thymine

A component of nucleic acids; a pyrimidine base

Define: Guanine

A component of nucleic acids found in DNA and RNA. Is a purine base.

Which is phosphate?

Green

Which is Deoxyribose Sugar?

Orange

Which is Adenine?

purple

Which is Thymine?

Pink

Which is Cytosine?

Blue

Which is Guanine?

Coral

Polymerase Chain Reaction:

A lab technique for making multiple copies of a DNA sequence

Restriction Enzymes:

Cuts DNA sequences at restriction sites

Restriction Sites:

A sequence of DNA where a restriction enzyme cuts

Restriction Digest(DNA digest)

The process of cutting DNA molecules into smaller pieces using restriction enzymes

Restriction Fragment Length Polymorphism (RFLP)

Variations in DNA fragment sizes produced when DNA is cut with restriction enzymes. Variation in length are due to differences in each organism’s DNA sequence.

Purpose of micropipette?

Transfer precise micro volumes of liquid

Morgue:

where bodies are temporarily kept while pending identification or release for burial or autopsy

Autopsy:

a postmortem evaluation to determine cause of death

Cause of death:

The specific injury trauma or disease that directly caused the victim’s death (ex. gunshot wound)

Mechanism of death:

What happens inside the body to result in death (ex.blood loss)

manner of death:

\

The circumstances that result in death which are designated as natural or unnatural

Muscular System function

moves the body and moves substances around the body; maintains posture; produces heat

Muscular System includes:

Skeletal, Cardiac, and Smooth muscles

Skeletal System function

Protects and supports body organs; provides a framework the muscles use to cause movements; stores minerals

Skeletal System includes

Bones, joints

Respiratory System functions

Assists with gas exchange with external environment; keep blood supplied with oxygen and removes carbon dioxide

Respiratory System includes

Nasal cavity, trachea, lungs, bronchus

Circulatory System functions

Pumps blood around body; transports oxygen

Circulatory system includes

heart, blood vessels (veins, arteries, capillaries)

Digestive system functions

Breaks down food into nutrient molecules; absorbs nutrients; rids the body of waste

Digestive system includes

Oral cavity, esophagus, small and large intestine, stomach

Nervous system functions

responds to internal and external changes by acting an appropriate response; processes information

Nervous system includes

brain, spinal cord, nerves, sensory receptors

Immune system functions

Filter fluid in the body; attacks foreign substances like germs

Immune system includes

lymph nodes, pathogens, white blood cells, antibodies

Physiological Tome of death

The time when the decedent’s vital functions actually ceased

Estimated Time of death

the time the medical examiner estimates that the death occurred

Legal time of death

the time of death recorded on the death certificate

Algor mortis

change in body tempreture

Rigor mortis

Stiffening of the body

Livor mortis

Pooling of blood on the parts of the body that is touching the ground

Glaister Equation use

Approximate the time since death

define: Histology

Study of microscopic structures

PNS- peripheral nervous system

All the nerves in the body

CNS- central nervous system

The brain and spinal cord

Occipital Lobe

receives and processes sensory nerve impulses from eye

Parietal Lobe

Crucial in integrating sensory and visual information

Frontal lobe

Planning and organizing incoming information controls behavior and emotion

Temporal lobe

processes language, stores information in long term memory

Epithelial Tissue

absorbs, secretes, protects, and sense for us

Connective tissue

supports and connects other tissues

Nervous tissue

receives, interprets, and responds to signals

Muscle tissue

makes up muscles in the body, provides ability to contract

What is number 1?

right atrium

What is number 2?

Right Ventricle

What is number 3?

Left Atrium

What is number 4?

Left ventricle

What is number 5?

Pulmonary artery

What is number 6?

Aorta

What is number 7?

Superior vena cava