Problem 125 - Objective Biology for NEET

Question

Reissner's membrane is found in (a) Cochlea of mammal (b) Eye of mammal (c) Heart of mammal (d) Nasal duct of mammal

Step-by-Step Solution

Answer

The correct answer is (a) Cochlea of mammal.

Step 1: Identify the Context

This question is within the realm of biology, focusing on the physiology of mammals and the location of Reissner's membrane.

Step 2: Utilize Knowledge

Using biology knowledge, understand that Reissner's membrane is a part of the cochlea in the ear of mammals.

Step 3: Select the Correct Answer

Based on this understanding, select the correct choice (a) Cochlea of mammal as the answer.

Key Concepts

Cochlea

The cochlea is a crucial component of the inner ear in mammals, essential for hearing. It's a spiral-shaped organ that converts sound vibrations into neural signals which the brain interprets as sound. Inside the cochlea, sound waves travel through fluid-filled chambers, activating delicate hair cells that generate electrical impulses.
The cochlea processes sounds of different frequencies due to its tapered and coiled structure. High-frequency sounds affect the base, whereas low frequencies reach the apex. Located within the cochlea is Reissner's membrane, one of three membranes separating the chambers. It divides the scala vestibuli and scala media, assisting in maintaining fluid balance and separating different ionic environments, which is vital for inner ear function.

• Spiral-shaped and located in the inner ear
• Converts sound into neural signals
• Contains Reissner's membrane

Mammalian physiology

Mammalian physiology refers to the study of the biological functions and processes in mammals. It encompasses how different systems, like the respiratory, circulatory, and nervous systems, support life by working in harmony. Understanding mammalian physiology gives insight into how structures like the cochlea function.
In the cochlea, mammalian physiology plays a role in how sound is processed. This involves fluid interactions, mechanical movements of membranes, and hair cell neuroactivity. Physiology explains how these components interact, allowing for precise sound discrimination, necessary for communication and survival.

• Studies biological functions in mammals
• Focuses on systemic functions like hearing
• Explains cochlea function and sound processing

Mammalian ear anatomy

Mammalian ear anatomy is designed to capture and process sound, aiding in communication and environmental awareness. The ear is divided into three main sections: outer, middle, and inner ear. The outer ear captures sound waves, directing them towards the eardrum in the middle ear. Here, sound is amplified and transmitted to the inner ear.
The inner ear contains the cochlea and crucial structures like Reissner's membrane, essential for detecting and processing sound. Anatomy of the mammalian ear enables the translation of physical vibrations into electrical signals the brain can understand. This involves various delicate structures, including tiny bones in the middle ear and specialized cells in the cochlea.

• Comprised of outer, middle, and inner sections
• Inner ear houses the cochlea
• Facilitates the conversion of sound into signals