They all have membranes in order to stimulate senses
The nictitating membrane is the transparent layer the covers the outside of a frogs eye. Frogs have a so-called Nictitating membrane, which they can slide over their eyes for protection. They do this while jumping and swimming.
Just behind the eyes.
Anurans (frogs) have a tympanic membrane located posterior to their eyes. This circular membrane represents their external ear as it has an auditory function. Sex can also be determined by examining the tympanic membrane. Males have a tympanic membrane significantly larger than their eyes, while females' are usually around the same size as their eyes.
The nictitating membrane
The nictitating membrane is a translucent third eyelid in frogs that provides protection and helps keep their eyes moist. It acts as a protective barrier while allowing some visibility, enabling frogs to see basic shapes and movements even when their eyes are covered.
can hear well in both water and air
The tympanic membrane .
Most frogs have a nictitating membrane. It's a sturdy film that covers and protects the eye while the frog is underwater.
The tympanic membrane on the leopard frog is what would be considered their eardrum. It is located directly behind the frog's eye, externally.
In leopard frogs, the nictitating membrane is typically a translucent or clear color, allowing it to protect the eye while still enabling some visibility. This membrane helps keep the eye moist and shields it from debris and potential injury. Its coloration may appear slightly bluish or grayish, but it generally blends in with the frog's overall coloration.
Some differences between frogs and humans include frogs having a three-chambered heart (compared to the human four-chambered heart), frogs having moist scaleless skin for respiration and water absorption, and frogs having a cloaca for excretion and reproduction. Additionally, frogs have a unique skeletal structure that allows them to jump high distances.
Frogs have a unique auditory system that includes both external and internal ear structures. Unlike many mammals, frogs lack external ears; instead, they have a tympanic membrane (eardrum) located on the surface of their head, which is highly sensitive to sound. This membrane is coupled to the inner ear by a series of bones, allowing frogs to detect a wide range of frequencies, particularly those of their mating calls. Additionally, their ability to hear both air and water sounds makes them well-adapted to their amphibious lifestyles.