Chapter 3 (B)

25問 • 1年前

問題一覧

The taste buds:

Are located at the basis of the taste papillae, Contain receptor gustatory cells and supporting cells, Have sensory nerve fibres which send impulses to the encephalon

Choose the correct statement(s) referring to primary tastes:

They include the tastes of sweet and bitter, The taste umami (savouriness) is connected to glutamate, The taste bitter is perceived mainly at the back of the tongue

The receptors for the perception of the 5 primary tastes are located as follows:

For umami – near the pharynx, For sweetness – mainly at the tip of the tongue, For bitterness – at the back of the tongue

The primary tastes include:

Sour, bitter, umami, Sour, bitter, sweet, Sweet, salty, umami

Which of the following statements represent common characteristics of the olfactory and taste analysers:

They are senses which require a contact between specific receptors and the molecules of the substances which are to be detected, Their receptors are specific chemoreceptors belonging to exteroceptors

Choose the correct statement(s) referring to the sense of smell:

It has specialised receptors (olfactory cells), It requires the contact between receptors and the molecules of the substances which are to be detected, It is also called olfactory sense

Choose the correct statement(s) about the olfactory receptors:

They are specialised olfactory cells, They are chemoreceptors which suffer from olfactory fatigue, They are cells having olfactory cilia and a single nucleus

Choose the correct associations:

Free nerve endings in the skin – exteroceptors - pain, Pacinian corpuscles – skin – strong pressure and vibrations, Merkel discs – skin – tactile stimuli

Choose the correct statement(s) referring to the sense of touch:

It is related to the senses of pressure, pain and vibration, Its receptors are represented by the free nerve endings in the skin, Together with its related senses, it uses receptors located in muscles and joints

The following statement(s) is/are true about pressure and vibration (related to the sense of touch):

Light pressures and vibrations on the skin are not detected by Meissner corpuscles, Strong pressure to the skin is detected by the Pacinian corpuscles, The impulses gathered by the pressure and vibration receptors are sent to the encephalon, where they are interpreted

The following are components of the external ear:

The external auditory orifice representing the entrance to the external auditory canal, The auricle, The external auditory canal which transmits sound vibrations

The following statement(s) is/are true referring to the Eustachian tube:

It extends between the pharynx and the middle ear, It helps maintain equal pressure on both sides of the tympanum

Choose the wrong associations from below:

Stapes – incus – in contact with the round window, Cochlea – cubic shape – middle ear - perilymph, External auditory canal – external ear – generation of sound vibration

Select the true statement(s) referring to the external ear:

It is delimited from the middle ear by the tympanic membrane, It consists of the auricle and the external auditory canal

Choose the true statement(s) referring to the Eustachian tube:

It is a duct that ensures an equal pressure on both sides of the tympanum, It connects the middle ear to the lateral wall of the nasopharynx, It is accessible to microorganisms from the nasopharynx

The following statements are true referring to the bony labyrinth:

It contains perilymph which surrounds the membranous labyrinth, It is located in the inner ear and houses the cochlea, the vestibule and the semicircular canals, It contains the membranous labyrinth

Choose the correct statement(s) referring to the membranous semicircular canals:

They are a part of the membranous labyrinth, Each is connected to the utricle, located superior to the saccule, The utricle and semicircular canals are associated to the sense of balance, At the junction with the utricle, each canal has a dilated part called ampulla

Sound waves are characterised by:

Intensity, which varies according to the amplitude of the sound wave, Timbre (quality) of sound, which depends on tone harmonic, Frequency, consisting of the number of air vibrations per unit of time

Choose the correct statement(s) from below:

The intensity of sound is expressed in decibels, Sound waves are mechanical waves, Sound waves, through their energy, produce the vibration of the tympanum

The following structures are involved in the hearing process:

The tympanum, which vibrates under the action of sound waves coming through the external auditory canal, The oval window, which is in contact with the stapes, The temporal lobes in the cerebral hemispheres where sounds are interpreted

Choose the correct statement(s) referring to the sense of balance:

It derives from the activity of the inner ear, which contains a series of canals crossing the temporal bone, In the utricle, saccule and the semicircular canals, there are structures which detect dynamic and static balance, The vestibular branch of nerve VIII sends to the encephalon the impulses from the ampulla and the macula

The following structures are associated with the sense of balance:

The utricle and saccule which contain endolymph, similar to the interstitial fluid, Ciliary sensory cells in the semicircular canal ampullae, Ciliary sensory cells and the membrane with small calcium carbonate fragments (otoliths) in the maculae of the utricle and saccule

Choose the true statement(s) referring to the receptors of the vestibular apparatus:

They are mechanoreceptors situated in the inner ear, They are groups of ciliary sensory cells located in the ampullae of the semicircular (membranous) canals (ducts), They are located in small structures (maculae) in the utricle and saccule

The following statement(s) is/are true referring to the fragments of calcium carbonate:

They are also called otoliths and have an inorganic structure, They belong to the membrane which covers the ciliary cells in the utricular and saccular maculae, Otoliths change their position and influence the ciliary cells of the macula due to the pressure caused by changing the position of the head

Choose the correct statement(s) which characterise static and dynamic balance:

The semicircular canals, through the ampullae, perceive the changes in the position of the head which help maintaining the body’s dynamic balance, The utricle and saccule, through their macular receptors, are responsible for the nerve impulses which contribute to maintaining posture, The receptors in the semicircular canals (ducts) transmit to the encephalon along the vestibular branch of the vestibulocochlear nerve (VIII)

Chapter 1 (komplett)

X · 50問 · 1年前

Chapter 1 (komplett)

50問 • 1年前

Chapter 1 (A)