Human Senses and Functions

Dr. Oh provides an overview of the special senses, focusing on taste, smell, vision, hearing, and balance. The video explains the role of chemo receptors in taste and smell, the anatomy of the eye, and the differences between rods and cones. It also covers the auditory ossicles' function in hearing and the role of the saccule, utricle, and semicircular canals in balance and movement.

Which two special senses rely on chemicals being dissolved in a liquid to function?

• Sight and taste

• Touch and balance

• Smell and taste

• Hearing and sight

What are the four primary taste sensations?

• Sweet, salty, sour, bitter

• Sweet, spicy, sour, umami

• Salty, spicy, bitter, umami

• Sweet, salty, spicy, bitter

Why do humans have more bitter receptors compared to other taste receptors?

• To enhance the taste of sweet foods

• To detect poisonous or spoiled substances

• To enjoy a variety of flavors

• To improve digestion

What is the function of the cornea in the eye?

• To focus light onto the retina

• To protect the eye from dust

• To provide color vision

• To control the amount of light entering the eye

What is the role of the optic disc in the eye?

• It focuses light onto the retina

• It is the location of the blind spot

• It is responsible for color vision

• It controls the size of the pupil

How do rods and cones differ in their function?

• Rods are for peripheral vision, cones are for color vision

• Rods detect fine details, cones detect movement

• Rods detect color, cones detect light intensity

• Rods are for central vision, cones are for night vision

What is a common condition associated with vitamin A deficiency?

• Color blindness

• Myopia

• Night blindness

• Astigmatism

What does 20/20 vision mean?

• Vision that is legally blind

• Vision that is better than average

• Vision that requires correction

• Perfect vision at 20 feet

What is the function of the auditory ossicles?

• To detect balance

• To amplify sound vibrations

• To transmit light signals

• To protect the inner ear

How is sound energy measured?

• In watts

• In decibels

• In hertz

• In lumens