Organ senses
Organ Senses
Definition of each Sense Organ
1.) Eyes
-The human eye is an organ that reacts to light and has several purposes. As a conscious sense organ, the mammalian eye allows vision.
Fun Fact:
*In the dark, a substance produced by the rod cells increases the sensitivity of the eye so that it is possible to detect very dim light.
2.) Nose
- The nose is the organ responsible for the sense of smell. The cavity of the nose is lined with mucous membranes that have smell receptors connected to the olfactory nerve.
Fun Fact:
*The smell receptors are sensitive to seven types of sensations that can be characterized as camphor, musk, flower, mint, ether, acrid, or putrid.
3.) Tongue
-The receptors for taste, called taste buds, are situated chiefly in the tongue, but they are also located in the roof of the mouth and near the pharynx. They are able to detect four basic tastes: salty, sweet, bitter, and sour.
Fun Fact:
*The tongue also can detect a sensation called "umami" from taste receptors sensitive to amino acids.
*Women, in general, have a greater number of taste buds than men.
4.) Ear
- The ear is the organ of hearing. The outer ear protrudes away from the head and is shaped like a cup to direct sounds toward the tympanic membrane, which transmits vibrations to the inner ear through a series of small bones in the middle ear called the malleus, incus and stapes.
Fun Fact:
*Some people have "perfect pitch", which is the ability to map a tone precisely on the musical scale without reference to an external standard. It is estimated that less than one in ten thousand people have perfect pitch.
5.) Touch
- The sense of touch is distributed throughout the body. Nerve endings in the skin and other parts of the body transmit sensations to the brain. Some parts of the body have a larger number of nerve endings and, therefore, are more sensitive. Four kinds of touch sensations can be identified: cold, heat, contact, and pain.
Fun Fact:
* The
Definition of each Sense Organ
1.) Eyes
-The human eye is an organ that reacts to light and has several purposes. As a conscious sense organ, the mammalian eye allows vision.
Fun Fact:
*In the dark, a substance produced by the rod cells increases the sensitivity of the eye so that it is possible to detect very dim light.
2.) Nose
- The nose is the organ responsible for the sense of smell. The cavity of the nose is lined with mucous membranes that have smell receptors connected to the olfactory nerve.
Fun Fact:
*The smell receptors are sensitive to seven types of sensations that can be characterized as camphor, musk, flower, mint, ether, acrid, or putrid.
3.) Tongue
-The receptors for taste, called taste buds, are situated chiefly in the tongue, but they are also located in the roof of the mouth and near the pharynx. They are able to detect four basic tastes: salty, sweet, bitter, and sour.
Fun Fact:
*The tongue also can detect a sensation called "umami" from taste receptors sensitive to amino acids.
*Women, in general, have a greater number of taste buds than men.
4.) Ear
- The ear is the organ of hearing. The outer ear protrudes away from the head and is shaped like a cup to direct sounds toward the tympanic membrane, which transmits vibrations to the inner ear through a series of small bones in the middle ear called the malleus, incus and stapes.
Fun Fact:
*Some people have "perfect pitch", which is the ability to map a tone precisely on the musical scale without reference to an external standard. It is estimated that less than one in ten thousand people have perfect pitch.
5.) Touch
- The sense of touch is distributed throughout the body. Nerve endings in the skin and other parts of the body transmit sensations to the brain. Some parts of the body have a larger number of nerve endings and, therefore, are more sensitive. Four kinds of touch sensations can be identified: cold, heat, contact, and pain.
Fun Fact:
* The