Ear
What are the two parts of an outer ear?
Pinna and Auditory canal
What are the two photoreceptors present in an eye?
Rods and Cones
As light enters the eye, what is the first thing it passes through?
The Cornea.
Are cones in your ears or eyes?
Your eyes.
What are the four lobes of Cerebral Cortex?
Frontal, Temporal, Parietal and Occipital
What converts sound waves into vibrations?
Ear Drum
What three layers are present in an eye?
Sclera, Choroid, and Retina
What structure helps in maintaining the air pressure in the middle ear or tympanic cavity?
The Eustachian Tube.
Does the semicircular canal or cochlea have fluid?
They both have fluid!
Is the eyeball smaller or longer than normal in a hyperopic eye?
Smaller
What transfers the vibration from the eardrum and passes them to the incus?
Malleus
What is the area of the retina called where cones are concentrated?
Fovea Centralis/ Macula
what is the route of the nerve impulse after it is generated in the retina?
In Retina:
Photoreceptors ➡Bipolar neurons ➡ Retinal ganglion cells ➡Optic nerve ➡ Brain
Which lobe of Cerebral cortex has a role in vision?
Occipital lobe
What are the two types of hearing loss?
Conductive and Sensorineural
What is the cochlea? And what does it do?
A delicate, hallow structure of the inner ear with coiled tubes filled with fluid. It is where vibrations are changed into nerve impulses.
What type of lens is used to correct Myopia?
Concave lens
What is the main cause for Astigmatism?
Non-spherical curvature of cornea and or lens
Are interneurons or synapse the gap between two neurons (nerve cells)?
Synapse are the gap between two neurons.
Why does an object appear red?
An object appears red because it absorbs all the other colors and reflects only red.
What part of the inner ear helps with rotational equilibrium?
Semi-circular canals
Which layer of the eye is vascular? Name two structures that are extensions of the middle layer?
Choroid
Iris and Ciliary body
What is the order of sound?
1. Pinna 2. Auditory Canal 3. Ear Drum 4. Malleus 5.Anvil 6. Stapes 7. Oval window 8. Fluid in Cochlea 9. Movement of hair cells in Organ of Corti 10. Nerve impulses to Temporal lobe
What causes Glaucoma?
Intraocular pressure due to blockage in draining of aqueous humor.
Corpus Callosum