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Hearing is the perception of certain vibrations of bodies. These vibrations give rise to sound waves. These sound waves come to animals through the air, through water, or throught both air and water. Here we see the auditory organ of a mollusk showing the (a) auditory nerve, (b) the outer wall of connective tissue, (c) cells with auditory hairs, and (d) otolith.

Sense of Hearing

Hearing is the perception of certain vibrations of bodies. These vibrations give rise to sound waves.…

Hearing is the perception of certain vibrations of bodies. These vibrations give rise to sound waves. These sound waves come to animals through the air, through water, or throught both air and water. Here we see the auditory organ of a cray fish showing the auditory sac at the base.

Sense of Hearing

Hearing is the perception of certain vibrations of bodies. These vibrations give rise to sound waves.…

Hearing is the perception of certain vibrations of bodies. These vibrations give rise to sound waves. These sound waves come to animals through the air, through water, or throught both air and water. Here we see the auditory organ of a grasshopper located in the abdomen.

Sense of Hearing

Hearing is the perception of certain vibrations of bodies. These vibrations give rise to sound waves.…

Hearing is the perception of certain vibrations of bodies. These vibrations give rise to sound waves. These sound waves come to animals through the air, through water, or throught both air and water. Here we see the auditory organ of a cricket showing the auditory organ in the foreleg.

Sense of Hearing

Hearing is the perception of certain vibrations of bodies. These vibrations give rise to sound waves.…

In animals there are different types of sight. Some have what we call simple eyes. The simplest eyes are not capable of forming an image or picture of external objects. They only make the animal able to distinguish between light and darkness or shadow. This diagram shows the simple eye or a jellyfish.

Sense of Sight

In animals there are different types of sight. Some have what we call simple eyes. The simplest eyes…

The sense of smell is closely allied with the sense of taste. The organs of the sense of smell are simple nerve-endings in papillae or pits. The substance to be smelled must come to the organs of smell as a gas or vapor. This example shows the smelling pits on the expanded terminal segments on the antenna of a leaf-eating beetle.

Sense of Smell

The sense of smell is closely allied with the sense of taste. The organs of the sense of smell are simple…

Sound making amoung animals serves to aid in frightening away enemies or in warnng companions of their approach, for recognition among mates and members of a band or species. It also aids in the attracting and wooing of mates, and the interchange of information. The annoying, high-pitched, whining sound mosquitoes make is caused by their wings rapidly beating hundred of times per second. This diagram shows the auditory hairs on the antennae of a mosquito.

Sound Making

Sound making amoung animals serves to aid in frightening away enemies or in warnng companions of their…

The sense of taste enables us to test in some degree the chemical constitution of substances we take into the mouth as food. These organs are located in the mouth or on the mouth parts. This example shows a vertical section of large papilla on the tongue of a calf detailing the taste buds

Sense of Taste

The sense of taste enables us to test in some degree the chemical constitution of substances we take…