Eye Flashcards
All of the following statements concerning the eyelids are correct:
Eyelashes grow in the palpebral margins their distribution extending from the lateral canthus to the lacrimal papillae
The skin is continuous at the palpebral margins with the conjunctiva
The superior tarsus is larger than the inferior
The upper eyelid is more movable
The skin is very thin and is continuous at the palpebral margins with the conjunctiva
The superior tarsus is larger
The inferior tarsus is attached to the orbital septum
The eyelids enclose a conjunctival sac
The orbicularis oculi are supplied by the facial nerve muscle
Orbital septum attaches the tarsal plates to the superior and inferior orbital margins
**The bulbar conjunctiva is supplied by:
the ophthalmic nerve**
**the following statements concerning the iris are correct:
the iris is a part of the vascular tunic!
the iris is a part of the external tunic!
it forms the anterior wall of the posterior chamber!
it forms the posterior wall of the posterior chamber**!
it forms the lateral ! posterior of the anterior chamber!
it forms the anterior wall of the posterior chamber!
It forms the posterior wall of the anterior chamber
it contains the smooth muscles!
Dilatator pupillae is supplied by sympathetic system
It contains the pigment
Sphincter pupillae is supplied by oculomotor nerve
the following statements concerning the optic disc is correct:
it lies away from the visual axis
it is the exit point for the optic nerve
it is round
the central retinal vessels leave and enter retina at the optic disc
- *The cornea is supplied by the:**
- *ophtalmic nerve
It is transparent
It is convex anteriorly**
All of the following statements concerning the vitreus body are correct :
the hyaloid fossa is adapted to the lens
it is colorless
it fills the vitreus chamber
**Correct statements about the ciliary body:
It contains the ciliary muscle which is supplied by parasympathetic fibers**
Ciliary body contains melanin
**Correct statements about the
superior rectus muscle :
. It is supplied by the oculomotor nerve
. It elevates the eyeball**
**Correct statements about the claustrum:
It is supposed that it is one of the subthalamic nuclei
It receives**
fibres from the visual cortex
Correct statements about the frontal eye field:
It projects to the pontine gaze centre
It is located in the posterior part of the middle frontal gyrus
It is important in the control of the eye movement
It receives fibers from thalamus
All of the following statements concerning the Retina are correct:
the optic part of the retina extends from orra serrata to optic disc
macula lutea is located near the centre of retina
optic disc is insensitive to light
All of the following statements concering the eyeball are correct:
it is embedded in the fat of the orbit
it is peripheral organ of sight
**the anterior segment is bounded by the cornea and lens
anterior segment is divided into anterior and posterior chambers**
the following statements concerning the levator palpebrae superior is correct:
The levator palpebrae superior is supplied by the oculomotor nerve
Aqueous humour **drains from the eye through the:
Iridocorneal angle**
Correct statements about the reticular formation:
It controls states of consciousness
It is involved in somatosensory control
It controls spatiotemporal discrimination
It receives information from the main parts of the central nervous system
It consists of poorly defined groups of neurons
It receives informations from spinal cord
States of consciousness are influenced by reticular formation
It sends information to autonomic and control centers
**The following statements concerning the lacrimal apparatus:
the nasolacrimal duct has a mucous lacrimal fold
the lacrimal gland is supplied by opthalmic nerve
the nasolacrimal duct opens into the inferior meatus of**
nose
Correct statements about the optic chiasm:
it contains decussating fibers from the two temporal hemiretinae
it is a part of cerebrum
it receives blood from the posterior communicating artery
it lies dorsal to the hypophysis and diaphragma sellae
The following statements concerning the pupillary light reflex:
It is a four-neuron arc
Its afferent limb is CN II
Its efferent limb is CN III
**Correct statements about the
internal capsule :
The genu contains corticospinal fibers
The**sublentiform part contains acoustic radiation
the following statements concerning the gustatory system:
Parabrachial nucleus of pons projects taste input to the hypothalamus
Gustatory cortex is found in: Area 43
**the following statements concerning the laminae I-IV is correct :
They are**
main receiving area for the cutaneous exteroreceptive afferents
The following statements concerning the
Broca’s speech area is correct:
It is located in the inferior frontal gyrus in the dominant hemisphere
it is located in the posterior part of the inferior frontal gyrus in the dominant hemisphere
It is connected with the area 22
It comprises areas 44 and 45
**Audiovisual areas (22, 39 and 40) are connected with the Broca’s speech area
it is connected with the Wernicke speech area in the dominant hemisphere**
Stapedial muscle is supplied by the facial nerve
lens:
its transparent biconvex
its enclosed by elastic capsule
it consist of soft cortex and firm central nucleus
it weakly reflect light rays when the ciliary muscles are relaxed
eyeball:
the wall has outer fibrous layer middle vascular layer and inner layer
the internal components are anterior and posterior chamber, lens and vitreous body
the fibrous layer consist of cornea anteriorly and sclera posteriorly
