NBE SCIENCE-SET #9

Which of these chemical agents is a member of the quaternary ammonium compound family? Benzalkonium chloride Calcium hydroxide Sodium hypochlorite Mercuric chloride

Benzalkonium Chloride

Which of the following is NOT a humectant used in arterial formulations? Glycols Sorbitol Glycerol Borax

Borax

Most often used as fillers: Cellulose Perlite Both Cellulose and Perlite None of these

Both Cellulose and Perlite

Which of the following characterizes lung purge?

Frothy white or pink in color

What embalming instrument can be used to clamp a leaking blood vessel?

Hemostat

Which of these devices found in the preparation room uses water pressure to create a vacuum? Trocar Hydroaspirator Percolator Vacuum breaker

Hydro aspirator

Which of the following treatments would be used for the embalming of dehydrated body? Large volume of a dilute solution Small volume of a dilute solution Large volume of an astringent solution Small volume of an astringent solution

Large volume of a dilute solution

Paradichlorobenzene is sometimes placed in the casket to prevent:

MOLD GROWTH

Volcanic rock:

Perlite

Which of these is the most accurate classification of livor mortis? Post mortem intravascular blood discoloration Post mortem extravascular blood discoloration Ante mortem intravascular blood discoloration Ante mortem extravascular blood discoloration

Post mortem intravascular blood discoloration

What are sulfonate compounds used for in embalming fluids?

SURFACE ACTIVE AGENTS

An extrinsic variable factor in embalming is

Time lapse between death and embalming

Which of these sutures is NOT suited for closing an incision on an exposed area of the body? Single intradermal stitch Subcutaneous stitch Whip or roll stitch Double intradermal stitch

Whip or roll stitch

An instrument which may be used to guide an arterial or vein tube into a vessel is the

a groove director

Readings of 6.9 and below on the pH scale indicate the sample is: alkaline pure water acidic salty

acidic

Borax is used in embalming fluids to:

adjust pH

The cooling of the body to the temperature of its surrounding is

algor mortis

Some special purpose autopsy chemicals are: liquids solids gels all of these

all of these

Which of the following are basic types of embalming chemicals? arterial accessory cavity all of these

all of these

Which of the following are commonly used deodorants used in the funeral home: oil of sassafras oil of cloves benzaldehyde all of these

all of these

Which of the following are modifying agents often added to arterial fluids: buffers surfactants humectants all of these

all of these

The hydrolysis of proteins yields

amino acids

A protein compound that acts as a biological catalyst in chemical reactions is

an enzyme

Citrates and oxalates are usually added to embalming fluids to act as:

anticoagulants

Which of the following is NOT an intrinsic factor to be considered in case analysis? Atmospheric conditions Pathological conditions Moisture of the tissue Fever

atmospheric conditions

Which of these sutures begins by placing the point of the needle within the incision and then up through the skin passing from one side of the incision to the other side with each stitch? Baseball stitch Worm stitch Draw stitch Whip stitch

baseball stitch

Select the chemical which does not form a solution when mixed with water. ethanol methanol benzene formaldehyde

benzene

The product(s) of the reaction of formaldehyde and protein:

break down in the presence of an abundance of water.

Borax is used in an arterial fluid as a:

buffer

Appraisal of the condition of a body which may determine the embalming process is done during:

case analysis

The linear guide for the brachial artery is from the

center of the base of the axillary space to the center of the inner bend of the elbow

The linear guide for the femoral artery is from the

center of the inguinal ligament to the center of the medial condyle of the femur

The linear guide for the popliteal artery is from the center of the antecubital fossa to the center of the base of the index finger. center of the axillary space parallel to the long axis of the upper extremity. center of the inguinal ligament to the center of the medial condyle of the femur. center of the popliteal space parallel to the long axis of the lower extremity.

center of the popliteal space parallel to the long axis of the lower extremity.

A device which rests on the sternum with an arm that fits under the chin to hold the mouth closed during embalming is called a

chin rest

An example of a supplemental fluid is: coinjection fluid accessory fluid cavity fluid pore closer

coinjection fluid

The anatomical guide for the ___________ artery is long the medial border of the sternocleidomastoid muscle.

common carotid

Substances that can be decomposed or separated into elements are:

compounds

The disinfection which take place during the arterial injection portion of the embalming process is called:

concurrent disinfection

High index fluids generally cause

definite firming

A drying of the body or tissue as a result of the removal of moisture (water) is

dehydration

An abnormal color appearing in or upon the human body is

discoloration

Which of the following is an antemortem extravascular blood discoloration?

ecchymosis

These compounds break down large fat globules into small droplets to increase the surface area of the fat so that it can be more easily digested or washed away.

emulsifying agents

If an embalmer elevated a gravity percolator ten feet above the injection site how many pounds of potential pressure would be created?

five

The structure of glutaraldehyde is: four carbon chain with an aldehyde group on each end four carbon chain with the aldehyde group in the middle five carbon chain with a ketone group on each end five carbon chain with an aldehyde group on each end

five carbon chain with an aldehyde group on each end

An object with a specific gravity of less than one, when placed in water, will

float

This term means the total amount of formaldehyde which is required to completely preserve all the protein in a body:

formaldehyde demand

The arterial injection of a jaundice case with normal arterial fluid will likely cause which kind of a discoloration?

green

The family of elements which are often used as disinfectants is ___.

halogens

Postmortem stain is an extravascular change in the color of tissue due to

hemolysis

Tissues preserved with formaldehyde will decompose if the body is left in an environment which is:

highly humid

Edema within the pleural cavity is

hydrothorax

What type of solution has the power to attract a solvent through a semi-permeable membrane into itself? Hypotonic solution Isotonic solution Hypertonic solution Dilute solution

hypertonic solution

Where are the iliac arteries and veins located?

in the pelvic cavity

Dyes used in arterial fluid which color the fluid in the bottle, but impart no color to the body tissue are classified as ___ dyes.

inactive

Continuous injection of arterial solution with drainage taken at intervals is called concurrent. intermittent. formulaic. alternate.

intermittent

Solutions that have the same osmotic pressure are said to be:

isotonic

Which of the following is NOT characteristic of a large artery? has three layers has vaso vasorum is located in the more protected areas of the body it collapses flat when cut

it collapses when flat when cut

What is the purpose of ponceau in embalming fluids?

it will impart a color change

The focal point in regards to the cavity treatment of cases with tuberculosis is the

lung

What muscle is injected with arterial fluid to facilitate the closure of the mouth?

masseter

Currently, the most often used preservative used in injected embalming solutions is:

methanal

The Egyptians immersed bodies in

natron solution

The passage of a solvent through a semipermeable membrane from a dilute into a concentrated solution is

osmosis

Acidity or alkalinity is conveniently expressed by a scale of:

pH values

The connection between the amino acids of a protein molecule is called ___.

peptide bond

Which of the following conditions would predispose a dead human body to rapid decomposition?

peritonitis

The temporary rise in body temperature after death is called:

postmortem caloricity

What type of anticoagulant will breakup clots by causing the mineral particles of the blood to fall out of suspension?

precipitants

Components of embalming solutions which chemically alter peptide bonds are called ___.

preservatives

The passing of arterial solution through the capillary wall, caused by positive intravascular pressure is

pressure filtration

Deamination and decarboxylation occur simultaneously during

putrefaction

Which of these compounds contains the ammonium radical?

quaternaries

The anatomical guide for the ____________ artery is just lateral to the tendon of the flexor carpi radialis muscle.

radial

The action that formaldehyde has on proteins is:

reversible in the presence of an abundance of water

A solution containing all the solute it can hold under ordinary conditions is

saturated

Which of these is the complete and correct definition of formalin? solution of formaldehyde in water 100% formaldehyde saturated solution of HCHO in water with 7% methanol saturated solution of HCHO in methanol with 7% water

saturated solution of HCHO in water with 7% methanol

In an exanthematous disease, which of the following would best describe the skin?

scaling

Odor, purge, and skin slip are

signs of decomposition

At room temperature, paraformaldehyde is in the

solid state

The type of death where the organs have suffered irreparable harm and can never be revived is called:

somatic death

The density' of an object divided by the density of water is:

specific gravity

The right common carotid artery begins at the level of the

sternoclavicular articulation

The two points which define the linear guide for the right common carotid artery are

sternoclavicular articulation and the lobe of the ear.

In organic chemistry, the best formula for indicating the location of the various substituants in the compound is the:

structural formula

The component of arterial fluid which is designed to decrease the molecular cohesion at the surface of a liquid is a

surfactant

The study of death is

thanatology

Which of these condition contributes to skin-slip? Putrefaction of contents of the intestines the body lying in water after death for a few hours Lipolysis of the body tissues Saccharolysis of the body tissues

the body lying in water after death for a few hours

Which of the following are characteristics of organic compounds? their molecular structure is carbon based their chemical reactions are immediate their molecular weight is relatively small their molecules usually include metal elements

their molecular structure is carbon based

What is the common action of phenol, formalin and sodium hypochlorite on the tissues of the body?

they are all capable of bleaching the tissue

When ammonia combines with formaldehyde based substances, it forms a neutral compound known as:

urotropin

Which of the following conditions creates intravascular resistance to fluid distribution? Rigor mortis Tumors Vascular disease Weight of viscera

vascular disease

Water, when used in embalming fluids, is used as a:

vehicle

When a molecule of formaldehyde reacts by cross-linking peptide bonds, a molecule of ___ is produced.

water

The post mortem loss of body heat is

Algor Mortis

Carbolic acid is useful to embalmers in a surface pack because it: 1 - bleaches tissue 2 - cauterizes tissue 3 - kills most saprophytic bacteria 4 - kills most pathogenic bacteria

All of these

Oxygen has been found to occur in which of the following configurations? O O₃ O₂ All of these

All of these

Which of the following are the correct steps in the partial oxidation series methane? methane > methanol > methanal > methanoic acid > carbon dioxide and water. CH₄> CH₃0H> HCHO> HCOOH> CO2 + H₂O methane > methyl alcohol > formaldehyde > formic acid > carbon dioxide and water. All of these are correct.

All of these are correct

Distention of the body tissue is a complication of

Anasarca

Which of these is the most accurate classification of petechia? Ante mortem intravascular blood discoloration Ante mortem extravascular blood discoloration Post mortem extravascular blood discoloration Post mortem intravascular blood discoloration

Ante mortem extravascular blood discoloration