On this image, please label all marked structures: Define/describe the following vocabulary words pertaining to your Senses optic disc rightarrow Accommodation rightarrow Olfactory Glomeruli rightarrow Photoreceptor Rods rightarrow Bone Deafness rightarrow Visual Acuity rightarrow Solution 1. Marked structures should be labeled as follows; Left side marks (from top to bottom): (a) Optic nerve (b) Retina (c) Choroid (d) Sclera Right side marks (from top to bottom) (a) Lens (b) Cornea (c) Iris (d) Ciliary body 2. Definitions of terminologies given; (a) Optic Disc: Optic disc is the point of exit of ganglion cell axons from the eye. It is a blind spot in the eye, as there are no rods and cone cells present on it. These ganglion cell axonsafter leaving the eye form the optic nerve. Therefore, optic disc is also known as optic nerve head. (b) Accomodation: Accomodation is considered as the reflex action of eye, i.e, the way one can focus on nearby or distant object, thereby changing optical power frequently to maintain the clear image of the object. In this manner, the shape of lens and and pupil size changes frequently. (c) Olfactory glomeruli: Olfactory glomeruli is the point at which the information from the axons of olfactory receptor neurons is received; the synapses are formed between the terminal end of olfactory nerve with dendrites of mitral, tufted cells and periglomerular. It is a structure located in the olfactory bulb in the mammalian central nervous system. Olfactory glomeruli are sperical in shape. (d) Photoreceptor rods: Phtotoreceptor rods are the cells in the retina of the eye that help in clear sight in dim light. They are located towards the outer edges of the retina. They are present in millions, and are more sensitive than cone cells. (e) Bone deafness: Sond waves are conducted from outer ear, tympanic membrane to inner ear through middle ear ossicles. In case of problems that lead blocking of conduction of sound waves from outer to inner ear, leads to conductive hearing loss, also known as bone deafness. In such cases, passage of sound across the ear drum and the inner ear is blocked. (f) Visual Acuity: It refers to the \'clarity of vision\', which depends on both optical and neural factors, such as focal capacity of retina, clarity of lens, interpretative functioning of the brain..

1. On this image, please label all marked structures: Define/describe the following vocabulary
words pertaining to your Senses optic disc rightarrow Accommodation rightarrow Olfactory
Glomeruli rightarrow Photoreceptor Rods rightarrow Bone Deafness rightarrow Visual Acuity
rightarrow
Solution
1. Marked structures should be labeled as follows;
Left side marks (from top to bottom):
(a) Optic nerve
(b) Retina
(c) Choroid
(d) Sclera
Right side marks (from top to bottom)
(a) Lens
(b) Cornea
(c) Iris
(d) Ciliary body
2. Definitions of terminologies given;
(a) Optic Disc: Optic disc is the point of exit of ganglion cell axons from the eye. It is a blind
spot in the eye, as there are no rods and cone cells present on it. These ganglion cell axonsafter
leaving the eye form the optic nerve. Therefore, optic disc is also known as optic nerve head.
(b) Accomodation: Accomodation is considered as the reflex action of eye, i.e, the way one can
focus on nearby or distant object, thereby changing optical power frequently to maintain the
clear image of the object. In this manner, the shape of lens and and pupil size changes frequently.
(c) Olfactory glomeruli: Olfactory glomeruli is the point at which the information from the axons
of olfactory receptor neurons is received; the synapses are formed between the terminal end of
olfactory nerve with dendrites of mitral, tufted cells and periglomerular. It is a structure located
in the olfactory bulb in the mammalian central nervous system. Olfactory glomeruli are sperical
in shape.
(d) Photoreceptor rods: Phtotoreceptor rods are the cells in the retina of the eye that help in clear
sight in dim light. They are located towards the outer edges of the retina. They are present in
millions, and are more sensitive than cone cells.
(e) Bone deafness: Sond waves are conducted from outer ear, tympanic membrane to inner ear
through middle ear ossicles. In case of problems that lead blocking of conduction of sound waves
from outer to inner ear, leads to conductive hearing loss, also known as bone deafness. In such

2. cases, passage of sound across the ear drum and the inner ear is blocked.
(f) Visual Acuity: It refers to the 'clarity of vision', which depends on both optical and neural
factors, such as focal capacity of retina, clarity of lens, interpretative functioning of the brain.