SKIN The skin or the common integument is the protective covering of the body and is continuous at the natural orifices with the mucous membranes of digestive, respiratory and urinogential tracts. It acts as a sense organ concerned with the reception of pain, temperature (warmth and cold), touch (coarse touch and tactile) and pressure sensations. […]

The tongue is the organ of taste. It owes this property to the taste buds, which are situated in the foliate, fungiform and vallate papillae in the mucouse membrane of the tongue, the oral face of epiglottis and anterior pillars of soft palate. The taste buds are oval flask shaped masses, which occupy the recesses

The sense of smell is carried through the olfactory nerve, which is distributed on the nasal mucous membrane and covers the upper-fourth of the turbinate bones, septum nasi, nasal meatuses and ethmoidal cells called olfactory area. This part of the mucous membrane is pale-yellow in colour and is lined by epithelial cells. The epithelium is

The walls of the membranous labyrinth are made up of outer thin tunica propria and an inner lining epithelium. The tunica propria is composed of delicate fibrous tissue and stellate fibroblasts. The epithelium of the membranous labyrinth is a single layer of flat squamous cells resting on a basement membrane. In certain regions, the wall

Membranous Labyrinth of ear consists of a series of interconnected sacs and ducts lying within the osseous labyrinth. The membranous labyrinth has nearly the same general form as the osseous part but does not fill it completely, being considerably smaller in diameter. It is separated from the wall of bony labyrinth and is surrounded by

The osseous labyrinth is excavated in the petrous part of the petrous temporal bone, medial to the tympanic cavity. It consists of three parts -a middle vestibule, an anterior cochlea and posterior semicircular canals. The vestibule with the cochlea in front and semicircular canals behind. It is 5 to 6 mm. long. Its lateral wall separates it from the tympanic cavity and in it are

Internal Ear is the essential part of the organ of hearing and receives peripheral ramifications of the auditory nerve. It is also called as labyrinth due to its complexity of its shape. It consists of two parts, a complex membranous sac containing neuroepithelium filled with a fluid endolymph, the membranous labyrinth a series of cavities

The middle ear comprises the tympanic cavity or tympanum with its contents and the eustachian tubes. The tympanum is the cavity excavated in the bulla tympanica of the petrous temporal bone. It is situated between the tympanic membrane and internal ear. It is a laterally com- pressed air cavity lined by mucous membrane and communicates

The external ear consis of two parts, the auricula or pinna – a funnel shaped organ with its muscles, which collects the sound waves and the external acoustic meatus, which conveys these waves to the drum of the ear which separates the external ear from the middle ear. The auricula or pinna is the visible

Ear is the organ of hearing, it divided in three parts- External ear, middle ear and internal ear. Ear have these parts to read further- External Ear Middle Ear Internal Ear Osseous Labyrinth Membranous Labyrinth Microscopic Structure of Membranous labyrinth