The Sensory system Flashcards
Hvað er Myopia?
Nærsýni
Sensory inputs to the seat of the pants feeling is
a) blood rushing to legs
b) subcutaneous pressure sensors and muscle activity sensors
b) subcutaneous pressure sensors and muscle activity sensors
Hvað er presbyopia?
held þetta sé hrörnun sjónar með aldri. (Loss of the elasticity of the crystalline lens).
The normal visual acuity allows discrimination of two different points under an angle of __ minute of arc
1
If you reduce bank following a prolonged turn you can experience _______ illusion
somatogyral
cones detect ____ vision and are sensitive to hypoxia.
color
semicircular canals of the ears monitor ____ accelerations.
angular.
Vertigo is the result of ____ effect
Coriolis
Hvað getum við talað mörg orð á mínútu? En hlustað?
Getum hlustað á 500 orð á mínútu og talað 125 orð á mínútu.
The vestibular apparatus consists of the semi-circular canals and the ____.
otoliths.
The risk of getting spatial disorientation is growing when there is contradictory information between the ___ and the vestibular organs.
instruments.
Rhodopsine is a chemical called ______ which is sometimes preseent in ____ cells
“visual purple”, present i rod cells.
Hvað gerir rhodopsine?
Leyfir night vision
Coriolis illusion happens when stimulating several ____ canals simultaneously.
semicircular
Hvar eru semicircular canals?
inner ear
The three coats of the eye are: Sclera, uvea og ____
retina.
Ef þú ert í bíl sem er kjurr og ef það er annar bíll sem keyrir framhjá og þér finnst þú vera að hreyfast þá kallast það
a) illusion of relative movement
b) somato-gravic illusion
a) illusion of relative movement
Glaucoma is
a) high intra-ocular pressure
b) disturbed adaption
a) high intra-ocular pressure
The autonomic nervous system (ANS) regulates sweating, arterial pressure, body temperature and the General ______
adaption syndrome.
Which part of the inner ear is responsible for the perception of sound?
The cochlea
The middle ear contains three ossicles, known as the __, __ and the __.
hammer, anvil and stirrup. They transmit vibration into the cochlea in the inner ear, where the soundwaves are pcked up by the sound receptors.
Resonance of the body parts can result from:
a) vibrations from 1 - 100 Hz
b) angular velocity
a) vibrations from 1 - 100 Hz
Hvort er rétt?
a) Rods are concentrated around the outer edges of the fovea
b) cones give the best visual acuity
b) cones give the best visual acuity
The ____ passes information from sensory inputs to the CNS through sensory and motor nerves.
PNS
Disorientation is more likely to occur when the pilot is
a) flying in IMC
b) frequently changing between inside and outside references
c) flying from IMC into VMC
d) approaching over still water at night.
a) flying in IMC
b) frequently changing between inside and outside references - hélt að þú ættir nú að gera sem mest af þessu, weird.
d) approaching over still water at night.
The sense of balance comes from the _____ in the inner ear
vestibular system
the three semi circular canals detect _____ accelerations, while the saccule and utricle espond to ____ accelerations
angular, linear
Downward sloping runway, you feel..
you are too low -> adjust so you are too high (and therefore land too fast and long).
Upward sloping runway, you feel you are …. and the approach will be…
you are too high, approach will be steeper. (If you are too high you will need to approach steep so that’s what you will do).
Er gasto-intestinal system involved in motion sickness?
Yes
Which two things cause the convergence of light rays onto the retina?
Cornea and Crystalline lens of the eye
The refractive power of the lens is variable from 16 - __
30D
The proprioceptors inform you about your ____ motion and ____ position of the bodyparts.
relative, relative
Sunglasses with variable filtration (phototrope glasses), hver er ókosturinn?
Dependance on ultra-violet light which the cockpit glass screens out.
Seat-of-the-pants sense fær sín inputs frá: subcutaneous pressure receptors and ____ activity sensors
muscle
When focusing on near objects the shape of the lens gets more ____.
spherical.
Hvað er hypermetropia og hvernig er það lagað?
fjarsýni, lagað með convex lense.
Which bends light the most?
a) The cornea
b) the lens
a) The cornea
The cerebellum acts as a reflex centre for the co-ordination of ____.
equilibrium.
The optic system of the eye consists of the cornea, lens and _____.
vitreous humour
Will the use of a flashlight impair night adaption?
yes
In presbyacusis, will you stop hearing low or high tones?
You lose perception of high tones first.
Smooth vision is achieved in the ____.
visual cortex.