Sound amplification in the outer ear (auditory canal) is affected by?

Prolonged exposure to loud noise can cause permanent damage to?

The loss of elasticity (stiffening) of the tympanic membrane will result in?

Sound Intensity Level is proportional to the logarithm of the ratio of incoming to threshold intensity SIL ​= 10·Log (I/I​0)​ . ​If intensity is increased by a factor of 100, what is change in SIL?

7. The sound intensity level in a room is 20 dB. A TV produces additional intensity level of 60 dB. What is the sound intensity in the room now?

Match the physical (objective) with the corresponding psychophysical (subjective) properties of the sound: ​(hint: multiple connections are possible) a. Frequency. a)Timbre b. Intensity. b)Pitch c. Acoustic spectrum. c) loudness

Sound frequency is?

The fundamental harmonic (frequency ​f0​ )​ in a complex sound is characterized by?

The speed of sound is calculated by the Newton-Laplace formula , where K is the stiffness coefficient, and ρ is the density of the material. If the density of the substance doubles, the speed of propagating sound wave will?

What is the speed of sound in air?

Does absorption of sound and the corresponding penetration depth depend on the wavelength?

Is it possible for internal organs to generate sounds that propagate to the skin, and are audible?

Noise can be defined as?

Damping oscillations are?

If the amplitude of a wave doubles (x2), what would happen to the period?

In which of the following mediums, sound waves cannot propagate?

Which of the following waves are NOT mechanical?

A propagating sound wave transfers?

Which of the following factors has the most significant effect on the speed of propagation of sound waves?

Sound Waves are?

The speed of sound (in non-dispersive medium):

Human ear is most sensitive to frequencies (refer to equal-loudness curve):

What is the meaning of 0 dB?

Timbre is:

The pitch of sound depends mostly on:

Which of the following does NOT have relevance to the reflection/transmission of sound waves?

Timbre is related to:

Weber-Fechner law (in psychophysics) describes a logarithmic relationship between the intensity of a sound wave and....:

Intensity is defined as?

When sound wave travels across two materials with similar acoustic impedance, at the boundary surface there will be:

The acoustic impedance ​Z o​ f a substance is defined as the product of:

Why can’t we hear voices (speech) when submerged under water?

What property of sound is measured in decibels (dB)?

dness If the period of a wave is 0.02 s, what is its frequency? (​Hint: how often does it vibrate in one second?)

A person screams in the mountain and hears the echo after 2 seconds. How far was the cliff that caused the reflection of the sound (echo)?

Which of the following properties of sound is measured in Hertz (Hz)?

When sound wave propagates between two media with similar impedance, there will be:

The human ear is sensitive to frequencies in the range:

What are the SI units for loudness?

The speed of sound in the human body is approximately:

The audiogram is a method for hearing loss evaluation by measuring the threshold hearing intensity of sound for different:

Pure tone is characterized by:

When sound wave travels from air into the human body, what happens to its speed?

Doppler shift applies to:

The contact gel used in ultrasonography (echography) is for:

In medical imaging, Doppler echography is most appropriate for:

Which of the following waves cannot propagate in vacuum?

In what form is the information received with Doppler Echography displayed?

Doppler frequency (shift) is:

For which of the following numerical Doppler frequency shifts is the blood speed the highest?

Is it possible to tell the direction of motion of erythrocytes from the sign of the Doppler shift ​∆f = f - f​0?

If shorter wavelengths of ultrasound are less penetrating in human tissue, then which of the following frequencies is most appropriate for DEEP tissue and organ imaging?

Doppler shift is defined as:

At what angle (Θ) to the surface of the body should the ultrasonic probe be applied in order to gain a maximum Doppler shift? Consider that Doppler shift is proportional to cos (Θ).

The speed of ultrasound in human tissue depends on:

The so called “reverse piezoelectric effect” finds application in:

Ultrasound can propagate through:

Phonophoresis is:

Infrasound of certain frequency and intensity can:

Infrasound CANNOT propagate through:

Choose the correct statement:

Choose the correct range:

The resonant frequency of the vestibular system is in the range of:

The direct piezoelectric effect is used for:

Piezoelectric effect is defined as:

Does human tissue exhibit piezoelectric properties?

Which statement is correct?

Mechanical waves with frequency above 20 kHz are called:

Infrasound is:

If ​Δf i​ s the change in frequency between emitted and received ultrasound signals due to Doppler effect during measurement of the linear speed of blood, then:

Which natural science studies infrasound?

Mechanical waves used for destruction of kidney stones, in procedure called “lithotripsy”, cause minimal damage to surrounding tissues because:

Ultrasound waves propagate through human tissue as:

Can humans sense infrasound waves?

The resonant frequency of the internal organs is in the range of:

Which of the following is used in Doppler echography?

What units are used to measure blood pressure with aneroid manometer?

What is the predominant type of blood follow in the arteries of a healthy person?

Blood pressure on the walls of blood vessels is compensated (counterbalanced) by the elasticity of blood vessels, and by the air pressure. If the reading of the sphygmomanometer during a systole is 120 mmHg and air pressure is 760 mmHg, what is the actual pressure that blood exerts on the walls of arteries?

Pulse pressure is defined as:

What is the most precise definition of blood pressure?

When blood pressure is measured with a stethoscope, at what point is the systolic pressure detected?

When blood pressure is measured with a stethoscope, at what point is the diastolic pressure detected?

What is the variation of blood pressure across the cardio-vascular system:

What property of blood is characterized by the Reynolds number?

Cardiac resonant frequency in the range of:

What causes the Korotkoff sounds?

The speed of arterial pulse wave depends mostly on:

Gas embolism (clogging of blood vessel) can be explained with:

Ideal liquids are defined as:

What quantity is transferred when there is internal friction?

Which of the following parameters is the most informative for the blood supply of a given organ?

A necessary condition for internal friction (viscous force) in fluid dynamics is:

Laplace pressure ​Δр ​does NOT depend on:

Which of the following parameters of the vascular system have the greatest effect on blood flow resistance?

Ideal (perfect) fluid is defined as:

Where in the cardiovascular system is the blood pressure at minimum?

The volumetric flow rate ​Q =dV/dt ​of blood in the cardiovascular system is:

Linear velocity of blood in the cardiovascular system is:

Which of the following formulas relates volumetric flow rate ​Q t​ o linear speed ​v and surface area ​S o​ f a fluid in a closed circuit (blood)?