BNNS501 Second Exam Questions And Complete Solutions 2024/25
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Course
BNNS501
Institution
BNNS501
Accommodation - Correct Answer Change in the curvature of the lens to adjust to distance of objects
Anterior Cavity - Correct Answer Cavity anterior to the lens which is filled with aqueous humor to nourish the lens and cornea
Binocular Vision - Correct Answer Both eyes move to look at ...
BNNS501 Second Exam Questions And Complete Solutions
2024/25
Accommodation - Correct Answer Change in the curvature of the lens to adjust to distance of objects
Anterior Cavity - Correct Answer Cavity anterior to the lens which is filled with aqueous humor to
nourish the lens and cornea
Binocular Vision - Correct Answer Both eyes move to look at the same object
Choroid - Correct Answer Part of the Vascular layer which absorbs scattered light in the eye and
maintains a clear/ sharp image
Cones - Correct Answer Photoreceptors that are specialised for sharp colour vision
Conjunctiva - Correct Answer Thin protective mucous membrane that lines the inner aspect of the
eyelids
Convergence of Eyes - Correct Answer Medial movement of eyes to focus both eyes on an object
Cornea - Correct Answer Transparent protective outer layer that covers the iris
Fibrous Tunic - Correct Answer Outer tunic of the eye, contains the Sclera and Cornea
Fovea centralis - Correct Answer Cone-only area at the centre of the Macula lutea which is the area of
highest visual resolution
Inner Tunic - Correct Answer Inside tunic that consists of the retina
Iris - Correct Answer Coloured portion of the eye which regulates the amount f light entering the eye
,Lacrimal Fluid - Correct Answer The name for tears which protect, clean, moisten and lubricate the
eyeball. Contains lysozyme
Macula lutea - Correct Answer Exact centre of the posterior retina
Optic Disc - Correct Answer Site where the optic nerve exits the eyeball
Posterior Cavity - Correct Answer Cavity that lies between lens and retina. Contains jelly-like substance
to maintain eye shape
Pupil - Correct Answer Hole in the middle of the eye that allows light into the eye
Refraction - Correct Answer Bending of light rays as they move from one medium to another of
different density
Retina - Correct Answer Inside membrane that consists of photoreceptors (rods and cones)
Rods - Correct Answer Photoreceptors that are specialised for black and white vision as well as shapes
and movement
Sclera - Correct Answer White of the eye that provides shape and support for the eyeball
Vascular Tunic - Correct Answer Middle tunic of the eye, contains the choroid, ciliary body and the iris
Auricle/ Pinna - Correct Answer Elastic cartilage covered with skin that directs sound waves towards the
tympanic membrane
Basilar Membrane - Correct Answer Lower membrane of the Cochlea Duct
Cochlea - Correct Answer Small, snail-shaped organ of the ear that contains the receptors for hearing
, Dynamic Equilibrium - Correct Answer Maintenance of the head position during sudden movements
such as rotation, acceleration and deceleration
Endolymph - Correct Answer Fluid that conducts sound vibrations and respond to mechanical forces
located in the Membranous Labyrinth
Equilibrium - Correct Answer The state of being balanced and refers to head position in relation to the
body
External Auditory Canal - Correct Answer Curved tube of cartilage and bone leading to the temporal
bone
External Ear - Correct Answer Structure that collects sound waves
Internal Ear - Correct Answer Structure that contains the receptors for hearing and equilibrium
Middle Ear - Correct Answer Structure that contains the 3 auditory Ossicles, Oval Window and Round
Window
Ossicles - Correct Answer Middle ear bones
Otoliths - Correct Answer Calcium carbonate stones which respond to gravity located in the saccule or
utricle
Perilymph - Correct Answer Fluid that conducts sound vibrations and respond to mechanical forces
located in the Bony Labyrinth
Presbycusis - Correct Answer Age-associated progressive loss of hearing in both ears related to loss of
hair cells and nerve pathway degeneration
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