IOP2603 EXAM PACK 2025 DETAILED QUESTIONS AND ANSWERS WITH RATIONALES GRADED A+ GUARANTEED PASS ACE YOUR TEST

IOP2603 EXAM PACK 2025

IOP2603 EXAM PACK 2025 DETAILED
QUESTIONS AND ANSWERS WITH
RATIONALES GRADED A+ GUARANTEED PASS
ACE YOUR TEST

Metal fume fever has been shown to be caused by exposure to freshly generated (nascent) fumes of zinc and
magnesium and their oxides. Although zinc and magnesium are the most common causes, copper has been known
to cause metal fume fever also.

A temporary depression of the hearing is called a:




A)
Noise Induced Hearing Reduction (NIHR)

B)
Temporary Threshold Shift (TTS)

C)
Permanent Threshold Shift (PTS)

D)
Temporary Auditory Depression (TAD) - ANS :The correct answer is: B



A temporary depression of the hearing is called a Temporary Threshold Shift or TTS.

In heat stroke, the:




A)
Body temperature is lowered

B)
Body temperature is elevated
1

, IOP2603 EXAM PACK 2025

C)
Body temperature is normal

D)
Patient sweats profusely - ANS :The correct answer is: B



In heat stroke the patient has an elevated temperature and does not sweat.

One of the problems with the old method of using cotton earplugs is cerumen. Cerumen is also detrimental to some
of the modern earplugs. What is cerumen?




A)
Ear canal hair cells

B)
Earwax

C)
Fluids secreted by the cochlea

D)
Secretions of the hypothalamus - ANS :The correct answer is: B



Cerumen is earwax. If cotton earplugs were used the earwax would bind the cotton together minimizing the
protective effect.

The main part of the body involved in maintaining the body's heat balance is:




A)
Skin

B)
Heart

C)
Lungs

D)
2

, IOP2603 EXAM PACK 2025

Hair - ANS :The correct answer is: A



The skin is responsible for dissipating heat load through the blood flow of the capillaries. The capillaries expand and
contract depending on load.

The middle ear contains a group of bones called the:




A)
Stapes

B)
Ossicles

C)
Incus

D)
Eustachian tubes - ANS :The correct answer is: B



The middle ear consists of the eustachian tubes the mastoid air cell system and the sound conducting mechanism
composed of the incus, malleus and the stapes. These three small bones comprise the ossicles.

The part of the ear which contains the hair like cells that detect sounds is the:




A)
Semicircular canals

B)
Cochlea

C)
Stapes

D)
Anvil - ANS :The correct answer is: B




3

, IOP2603 EXAM PACK 2025

The cochlea is the organ which contains the hair like cells. The sound waves move the hairs at specific locations in
the cochlea. The sites of hair movement correspond to the sounds' frequency.

Carpal tunnel syndrome involves an injury to the median nerve. The nerve is compressed due to in- flammation in
the carpal tunnel. Carpal tunnel will not result in which of the following?




A)
Numbness in little finger

B)
Pain in the wrist upon exertion

C)
Pain in the second and third fingers

D)
Numbness in the thumb - ANS :The correct answer is: A



The little finger is not served by the median nerve therefore the little finger is not affected by compression of the
median nerve in the carpal tunnel.

Occupational fatalities due to workplace violence (homicide) is the ______________ leading cause of occupational
fatalities in the United States.




A)
Highest

B)
Second highest

C)
Fifth highest

D)
Eighth highest - ANS :The correct answer is: B



Workplace violence has emerged as an important safety and health issue in today's workplace. Its most extreme
form, homicide, is the second leading cause of fatal occupational injuries in the United States. Nearly 1,000 workers
are murdered, and 1.5 million are assaulted in the workplace each year. According to the BLS Census of Fatal
4