which sensory receptors are involved in hearing?
1. mechanoreceptors
2. thermoreceptors and mechanoreceptors
3. This apple is red.
4. electrical signals
5. mechanoreceptors
t7s is all right
The sensory receptors involved in hearing are called hair cells, which are specialized cells located in the spiral-shaped organ called the cochlea of the inner ear.
To understand how hair cells work, let's break it down step by step:
1. Sound Wave Reception: When a sound wave reaches the ear, it travels through the auditory canal and vibrates the eardrum, which is a thin membrane at the entrance of the middle ear.
2. Amplification: The vibrations of the eardrum are transmitted to three small bones in the middle ear called the ossicles (malleus, incus, and stapes). These bones amplify the sound vibrations and transmit them to the cochlea.
3. Cochlea: The cochlea is a fluid-filled, spiral-shaped structure in the inner ear. It contains thousands of hair cells, which are the sensory receptors for hearing.
4. Hair Cells: Within the cochlea, the sound vibrations cause the fluid inside to move. This movement causes the hair cells to bend or sway.
5. Sensory Transduction: When the hair cells are bent or swayed, tiny hair-like structures on their surface called stereocilia are stimulated. This stimulation triggers changes in the electrical currents within the hair cells.
6. Neurotransmitter Release: As a result of the electrical changes, hair cells release chemical messengers called neurotransmitters, which transmit the auditory signals to the auditory nerve fibers connected to the hair cells.
7. Auditory Nerve: The auditory nerve carries the electrical signals from the hair cells to the brain. These signals travel through various auditory pathways until they reach the auditory cortex, where they are processed and interpreted, allowing us to perceive sound.
In summary, the sensory receptors involved in hearing are hair cells located in the cochlea of the inner ear. These hair cells convert sound vibrations into electrical signals, which are then transmitted to the brain for processing and interpretation.