Dog Ear Anatomy

Another part of the dogs head which can come in all shapes and sizes are their ears. In dogs the pinnae are mobile and can move independently of each other.

Ear Of Dog Ear Hearing

The membranous labyrinth is an interconnected group of fluid filled membranous sacs.

Dog ear anatomy. The shape and size of the external ear vary greatly among different breeds of dogs mainly owing to the auricular cartilage that forms the skeleton of the pinna. Whilst fido may totally ignore you in search of that squirrel his hearing is actually pretty incredible. There are three parts to the ear.

In some dogs it is of the floppy variety and in others it is straight or upright. Ear anatomy anatomy of the normal dog ear. The pinna is shaped to capture sound waves and funnel them through the ear canal to the eardrum.

Outer ear the outer ear includes the ear flap also known as the pinna as well as the portion of the ear you can see with the naked eye. The outer ear includes the pinna the part you see that is made of cartilage and covered by skin fur or hair and the ear canal. It is composed of a cartilage core and skin.

Unlike humans that have a very short ear canal dogs have a long narrow ear canal that makes almost a 90 degree bend as it travels to the deeper parts of the ear. The skin covering the auricular cartilage may show breed specific pigmentation. Beyond the ear flap is the ear canal and the eardrum.

The inner ear is located within the petrous temporal bone. The outer ear cannel is separated from the middle ear by a thin membrane called the eardrum or tympanic membrane. When sound waves hit these layers and the inner ear which is the major functional part of a dogs ear the brain assesses and coordinates the identification of the sound wave.

Dogs can have ear problems in all of these parts of the ear. Moreover associated anatomical bodies such as cartilages nerves vascular supply glands and the ear cavity assists in the normal functioning of ear and helps the body to maintain balance. The inner ear contains the membranous labyrinth which is surrounded by the bony labyrinth.

The outer ear middle ear and inner ear. The ear flap is part of the outer ear and stands up tall in some dog breeds or flops over in others. A dog that needs an in depth examination of his ears will probably require anesthesia so that the veterinarian can perform the exam easily without causing the dog discomfort or anxiety.

The size and shape of the pinnae vary by breed. The fluid is endolymph. It is the largest cartilage of the external ear.

This is the external most visual portion of the canine ear. Some are floppy some are tall and pointy and some are just mud and water magnets spaniel owners will be nodding in agreement.

Pinna And External Ear Canal Veterian Key