1. Made out of a thin piece of bone this wall separates nasal passages ___________
a) Nostrils
b) Cartilage
c) Bridge
d) Septum
Explanation: The nasal septum is composed of five structures. It separates left and right airways in the nose
2. Olfaction power decreases with age.
a) True
b) False
Explanation: Nose is the sense organ of olfaction. Olfaction power decreases with age due to the reduction in number of olfactory cells.
3. Rods and cons are modified _________
a) Multipolar neurons
b) Unipolar neurons
c) Bipolar neurons
d) Cannot be determined
Explanation: Bipolar neurons are a type of neuron which has two extensions. They are specialized sensory neurons.
4. Protein found in eye lens is __________
a) Crystalline
b) Opsin
c) Collagen
d) Rhodopsin
Explanation: Rhodopsin is a biological pigment found in rods of the retina. It is a G-protein coupled receptor. It is extremely sensitive to light
5. What helps to see color?
a) Rods
b) Cons
c) Lens
d) Retina
Explanation: Rods and cones are two types of photoreceptors in human retina. Rods are responsible for vision at low light levels and cones helps to see color
6. Fovea in the eye is a central depression in the yellowish pigment area called?
a) Macula lutea
b) Cornea
c) Retina
d) Blind spot
Explanation: Macula lutea is small yellowish area of retina. It provides central vision.
7. Which part is a colorful part of the eye?
a) Pupil
b) Iris
c) Eyeballs
d) Cornea
Explanation: Iris is a thin circular structure of the eye. It is responsible for controlling the diameter and size of the pupil.
8. Aqueous humour and vitreous humor are divided by ___________
a) Lens
b) Iris
c) Retina
d) Optic nerve
Explanation: The lens is a transparent biconvex structure in the eye. It helps to refract light to be focused on the retina.
9. Internal ear is filled with _________
a) Perilymph
b) Endolymph
c) Lymph
d) Mesolymph
Explanation: Endolymph is the fluid contained in the membranous labyrinth of the inner ear. It is also called as Scarpa’s fluid.
10. Eustachian tube is present between _________
a) Middle ear and larynx
b) Outer ear and pharynx
c) Middle ear and pharynx
d) Inner ear and larynx
Explanation: Eustachian tube is also known as auditory tube. It is approx 35mm long and 3mm in diameter