Chapter 3 (A)

25問 • 1年前

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Choose the correct statement(s) referring to senses:

They include the sense of touch, balance and vision, Sense organs have highly specialised receptors, They are tightly associated both functionally and structurally with the nervous system

In short, the following associations between sense organs and their anatomical location are true:

The olfactory mucosa – superior in the nasal cavity, Taste buds – the dorsal part of the tongue, The vestibular system – internal ear

In short, the following associations between sense organs and the nature of the stimulus are false:

The auditory apparatus – mechanical stimuli (luminous energy), The olfactory mucosa – chemical stimuli (vibrations)

The skin contains the following receptors of the sense of touch and related senses:

Free nerve endings (for pain), Meissner corpuscles (for light pressures), Pacinian corpuscles (for strong pressures and vibrations)

Different stimuli are received as follows:

Molecules of odorous substances – by the cilia of the olfactory cells, Pain – by the free nerve endings in the skin, Light stimuli – by the receptor cells in the retina

Choose the correct statement(s) from below:

The sense of smell is also called olfactory, The sense of taste is not associated with canals and receptors located in the cochlea, The receptors which detect stimuli are specialised structures

It is true that:

The temporal lobe contains areas which control visual and auditory memory, The occipital lobe contains areas which control contralateral vision, The cerebral hemispheres contain neurons which interpret the impulses received from the sense organs

As a sense organ, the eye:

Contains receptors which detect light stimuli (photoreceptors), Receives light from the surrounding environment and forms an image in the retinal nerve receptors, Sends the image to the brain under the form of nerve impulses

The following statement(s) is/are true about the eye as the organ of vision:

It is stimulated by the light coming from the surrounding environment, Its receptors belong to the class of photoreceptors, The nervous impulses generated by light stimuli are interpreted in the brain

Select the correct statement(s) referring to the eyeball:

It is an approximately spheroidal structure with an anterior part protruding outside the sphere, It has a wall consisting of three layers (coats), Its longitudinal diameter is longer than the transversal one

The accessory structures of the eye are:

Eyebrows and lashes which protect the pupil from foreign bodies, Lacrimal glands whose secretion washes the eyeball and maintains it wet, The conjunctiva which lines the internal part of the eyelids

The following statement(s) is/are true referring to the compartments of the eye:

The anterior compartment has two regions: the anterior chamber and the posterior chamber, The anterior chamber of the anterior compartment contains the aqueous humour

The following statements are true referring to the external wall of the eyeball:

It is resistant and fibrous, It contains the cornea and sclera

Choose the true statements referring to the iris:

It is a component of the eyeball’s middle layer, It controls the quantity of light that passes through the pupil, It belongs to the eyeball’s middle layer together with the choroid and the ciliary body

Choose the true statements referring to the choroid:

It belongs to the eyeball’s middle layer together with the iris and ciliary body, It contains the blood vessels of the eye structures, It does not belong to the eyeball’s external layer

Choose the true statement(s) referring to the iris:

It contains pigments which define eye colour, It controls the amount of light passing through the pupil, It consists of two layers of smooth muscle

Choose the false statement(s) referring to the aqueous humour:

It is a fluid which fills exclusively the anterior chamber of the eyeball, It is a gelatinous substance situated in the posterior chamber of the eyeball, It maintains the retina attached to the choroid

The following statement(s) is/are true about the crystalline:

It belongs to the refractory structures of the eye, It consists of a concentric protein fibrous material, It is transparent and elastic, It is the main structure responsible for image focalising

The following statement(s) is/are true about the retina:

It is a part of the eye’s internal layer, It consists of two layers, external – pigmented, and internal – consisting of nerve tissue, It detects light and forms the images that will be sent to the encephalon

The following are structural elements of the retina:

Bipolar neurons which receive nerve impulses, Multipolar neurons which form the third layer of the retina proper, Cone cells, about 6 – 7 million

Choose the correct statement(s) referring to the receptor cells of the retina:

They are receptor neurons, Rod cells play a role in detecting the contour of objects, Cone cells are concentrated in the central fovea

The cone cells of the retina:

Are receptor neurons, Are concentrated in the central fovea, Are responsible for day vision and for perceiving details and colours

A light ray follows the following trajectory in the eye:

Cornea – aqueous humour – pupil – crystalline – vitreous humour – focusing on the retina

Nerve impulses in the retina are carried:

Initially, through the optic nerve, then through the optic tract, to the cerebral visual cortex, To the cerebral visual cortex, where they are interpreted

Choose the correct statement(s) referring to taste:

It is also called gustation, Its receptors are situated in the taste buds, The receptors of the taste buds detect chemical substances after they have been dissolved

Chapter 1 (komplett)

X · 50問 · 1年前

Chapter 1 (komplett)

50問 • 1年前

Chapter 1 (A)