Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.

Essentials of Anatomy & Physiology

Fifth edition

Seeley • Stephens • Tate

Chapter 9

The Senses

Fig. 9.1

Fig. 9.2

Fig. 9.3

TASTE - gustatory cells

Types of taste

Sour

Sweet

Salty

Bitter

Umami

Fig. 9.4

THE EYE• IRIS - colored part of the eye

• It controls light levels inside the eye similar to the aperture on a camera. 

• pupil - The size of the pupil determines the amount of light that enters the eye. 

• sclera is commonly known as "the white of the eye." 

• cornea is the transparent, dome-shaped window covering the front of the eye.  It is a powerful refracting surface, providing 2/3 of the eye's focusing power. 

• lens is located just behind the iris

• Its purpose is to focus light onto the retina. 

Fig. 9.6

Fig. 9.7

Fig. 9.12a

Fig. 9.12bcde

Fig. 9.13

Fig. 9.16

Fig. 9.17

Fig. 9.18ab

Fig. 9.18cd

Fig. 9.19

Fig. 9.20

Fig. 9.21

Fig. 9.22

Fig. 9.23

Fig. 9B