Problem 9 - Biology: The Unity and Diversity of Life

Question

The organ of Corti contains receptors that signal in response to______. a. heat b. sound c. light d. pheromones

Step-by-Step Solution

Answer

The organ of Corti signals in response to sound (option b).

Step 1: Understand the Organ of Corti

The organ of Corti is a structure located in the cochlea of the inner ear. Its primary function is to detect and analyze auditory information.

Step 2: Recognize the Function of the Organ of Corti

Since the organ of Corti is located in the ear and detects auditory information, its function is closely related to the process of hearing.

Step 3: Identify the Stimuli it Responds to

As the organ of Corti is involved in the process of hearing, it contains receptors that respond to sound waves. Sound waves are converted into electrical signals that can be interpreted by the brain.

Step 4: Match the Description to the Answer Choices

Review the answer choices: a. heat, b. sound, c. light, d. pheromones. The organ of Corti contains receptors that signal in response to sound.

Key Concepts

Auditory System

The auditory system is an intricate network responsible for the sense of hearing. This system allows us to detect, process, and interpret sounds from the environment. It comprises several essential parts, including the outer, middle, and inner ear.

• Outer ear: Captures sound waves and funnels them into the ear canal.
• Middle ear: Transmits sound vibrations via the eardrum and ossicles (three small bones) to the inner ear.
• Inner ear: Contains the cochlea, where sound waves are translated into neural signals.

The auditory system's functioning is crucial for communication and environmental awareness, making it a pivotal component for interacting with the world.

Cochlea

The cochlea is a crucial element within the inner ear. Shaped like a snail's shell, the cochlea plays an essential role in hearing by translating sound vibrations into nerve signals. Within the cochlea lies the organ of Corti, which is the sensory organ crucial for hearing.

• Structure: The cochlea is a fluid-filled, spiral-shaped canal.
• Function: It converts mechanical sound vibrations into electrical signals that are sent to the brain.
• Organ of Corti: Located inside the cochlea, it contains hair cells that act as sensory receptors for sound.

The cochlea's ability to convert sounds into neural impulses is fundamental to our perception of sound, making it a vital part of the auditory system's complex process.

Sound Waves

Sound waves are essential to our ability to hear, as they carry auditory information through the air to our ears. They are fluctuations in air pressure created by vibrating objects, which can be comprehended by our auditory system.

• Nature: Sound waves are longitudinal waves that move through mediums like air, water, and solids.
• Frequency and Pitch: Sound wave frequency determines the pitch; higher frequencies produce higher-pitched sounds.
• Amplitude and Loudness: Amplitude affects sound loudness; larger amplitudes are perceived as louder sounds.

Understanding sound waves helps us appreciate how the organ of Corti detects auditory stimuli and transforms them into signals that our brain can interpret. This transformation is what allows us to comprehend and react to our auditory environment.