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Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332

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BuyFindarrow_forward

Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332
Textbook Problem
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Match each structure with its description.

_____ cataract a. protects eyeball
_____ cochlea b. transmits vibration to bone
_____ eardrum c. functions in balance
_____ lens d. detects pheromones
_____ sclera e. interferes with vision
_____ fovea f. contains chemoreceptors
_____ taste bud g. focuses rays of light
_____ Pacinian corpuscle h. has the most cones
_____ pinna i. collects sound waves
_____ vestibular apparatus j. sorts out sound waves
_____ vomeronasal organ k. defects touch

Summary Introduction

To match: The terms with their best description.

Explanation

Cataract: e. interferes with vision

Any changes to the lens cause clouding, and the condition is known as cataract. This scatters light and causes blurred vision. Eventually with time, this may result in blindness.

Cochlea: j. sorts out sound waves

Ear has three parts namely the outer ear, the middle ear, and the inner ear that function to transmit and transduce sound to the brain. The sound waves travel from the outer ear causing vibrations in the middle ear bones and transmit the vibrations to inner ear through the cochlea. Cochlea consists of mechanoreceptors to detect and sort sound waves and convert them to action potentials.

Eardrum: b. transmits vibration to bone

Ear has three parts namely the outer ear, the middle ear, and the inner ear that function to transmit and transduce sound to the brain. The sound waves travel from the outer ear causing vibrations in the eardrum. The eardrum transmits the vibrations to middle ear bones for further transmission to inner ear.

Lens: g. focuses rays of light

The lens is a transparent and flexible tissue that provides 25-30% of eye’s focusing power. The lens has ciliary muscles that undergo contraction and relaxation to change the shape of lens and its curvature. It is done such that the light reflected from the nearby or distant object focuses on the retina.

Sclera: a. protects eyeball

Sclera is a fibrous dense covering on the outer surface of the eye. It protects the spherical eyeball.

Fovea: h. has the most cones

Fovea is pit-like structure in the pigmented region of the retina where light is focused...

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