Chapter 5

Question 1

_____ million people are killed annually incur crashes around the world.

Answer 1

1.3

Question 2

_________ is the branch of mechanics that deal with the motion ob objects without reference to the forces that cause the motion.

Answer 2

Kinematics

Question 3

The _______ phase includes all of the evens that preceded the incident.

Answer 3

pre-event

Question 4

The _____ phase begins at the time of impact between one moving object and a second object.

Answer 4

event

Question 5

The _______ event phase begins as soon as the energy from the crash is absorbed.

Answer 5

post-event

Question 6

Netwon’s _________ law of motion states that a body at rest will remain at rest, and a body in motion will remain in noting unless acted on by an outside force.

Answer 6

1st

Question 7

Newton’s _____ law of motion states that energy can neither be created nor destroyed, but can be changed in form.

Answer 7

2nd

Question 8

Newton’s ______ law of motion that’s that for every action or force there is an equal and opposite reaction.

Answer 8

3rd

Question 9

_______ is a function of an object’s mass and velocity.

Answer 9

Kinetic Energy

Question 10

______ is required to put a structure into motion.

Answer 10

Force

Question 11

If the force is spread out over a larger area and the skin is not penetrated, then it fits the description of ________ trauma.

Answer 11

blunt

Question 12

A ________ is caused by the stretching of the tissues that occurs at the time of impact.

Answer 12

temporary cavity

Question 13

A _________ is left after the temporary cavity collapses and is the visible part of the tissue destruction.

Answer 13

permanent cavity

Question 14

The amount of the temporary cavity that remains as a permanent cavity is related to the _______ of the tissue involved.

Answer 14

elasticity

Question 15

In blunt trauma, two forces are involved in the impact - _______ and __________.

Answer 15

shear compression

Question 16

_______ is the result of one organ or structure changing speed faster than another organ or structure.

Answer 16

Shear

Question 17

__________ is the result of an organ or structure being directly squeezed between other organs or structures.

Answer 17

Compression

Question 18

MVC’s cane divided into the following types: (5)

Answer 18

Frontal
Rear
Lateral
Rollover
Rotational

Question 19

_____% of occupants who were totally ejected from a vehicle were killed.

Answer 19

77

Question 20

1 in 13 ejection victims sustained a _________.

Answer 20

spine fracture

Question 21

“_________” pelvic fractures are a common result of the interaction between the rider’s pelvis and the handlebars.

Answer 21

Open-book

Question 22

Failure house helmets has been shown to increase head injuries by more than _____%.

Answer 22

300

Question 23

If the _______ of the ribs is exceeded, fractures ribs and a flail chest can develop.

Answer 23

tensile strength

Question 24

Another type of injury that often occurs during deceleration is laceration of the liver caused by its impact with the ____________.

Answer 24

ligamentum teres

Question 25

Approximately 10% of patients with _______ fractures also have genitourinary injury.

Answer 25

pelvic

Question 26

______ describes an object’s initial size and whether that size changes at the time of impact.

Answer 26

Profile

Question 27

_______ describes whether the object turns over and over and assumes a different angle inside the body than the angle it assumed as it entered the body

Answer 27

Tumble

Question 28

_____ describes whether the object breaks up to produce multiple parts or rubble, and therefore, more drag and more energy exchange.

Answer 28

Fragmentation

Question 29

The size of the frontal surface area of a projectile is influenced by three factors:

Answer 29

profile
tumble
fragmentation

Question 30

_____ energy weapons include hand-driven weapons such as a knife or an ice pick.

Answer 30

Low

Question 31

______ energy weapons include handguns and some rifles whose muzzle velocity is 1000 ft/sec.

Answer 31

medium

Question 32

The temporary cavity created by a medium energy weapon is ____ times the caliber of the bullet.

Answer 32

3 - 5

Question 33

____ energy weapons have a muzzle velocity in excess of 2000 ft/sec.

Answer 33

high

Question 34

High energy weapons create a temporary cavity ____ times or greater the caliber of the bullet.

Answer 34

25

Question 35

The exit wound is usually a _______ wound.

Answer 35

stellate

Question 36

Only ___% of knife wounds penetrating the abdominal cavity require surgical exploration to repair damage.

Answer 36

30

Question 37

A medium energy injury is more damaging; ____ require surgical repair.

Answer 37

85 - 95%

Question 38

Handguns and rifles predominately use ____ on the inside of the barrel to spin a single missile in a flight patters toward the target.

Answer 38

rifling

Question 39

Devices known as ______ or _____ can be attached to the end of a shotgun barrel to shape and form the column of missiles into specific patterns.

Answer 39

chokes

diverters

Question 40

The average shotgun shell is loaded with _____ ounces of shot.

Answer 40

1 - 1.5

Question 41

An average birdshot shell may contain ____ pellets.

Answer 41

200 - 2000

Question 42

A buckshot shell may contain only ______ pellets.

Answer 42

6 - 20

Question 43

_____ can travel at greater than 16,4000 ft/second.

Answer 43

Blast waves

Question 44

The most common form of primary blast injury is ________.

Answer 44

tympanic membrane rupture

Question 45

Tympanic membrane rupture may occur at pressures as low as ______.

Answer 45

5 PSI