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Microtia is a congenital deformity where the auricle (external ear) is underdeveloped. A completely undeveloped auricle is referred to as anotia. Because microtia and anotia have the same origin, it can be referred to as microtia-anotia. [1] Microtia can be unilateral (one side only) or bilateral (affecting both sides).
Low-set ears are a clinical feature in which the ears are positioned lower on the head than usual. They are present in many congenital conditions. Low-set ears are defined as the outer ears being positioned two or more standard deviations lower than the population average. [1] Clinically, if the point at which the helix (curved upper part) of ...
An ear is the organ that enables hearing and (in mammals) body balance using the vestibular system. In mammals, the ear is usually described as having three parts: the outer ear, the middle ear and the inner ear. The outer ear consists of the pinna and the ear canal. Since the outer ear is the only visible portion of the ear in most animals ...
Noonan syndrome ( NS) is a genetic disorder that may present with mildly unusual facial features, short height, congenital heart disease, bleeding problems, and skeletal malformations. [1] Facial features include widely spaced eyes, light-colored eyes, low-set ears, a short neck, and a small lower jaw. [1]
Anotia ("no ear") describes a rare congenital deformity that involves the complete absence of the auricle, the outer projected portion of the ear, and narrowing or absence of the ear canal. This contrasts with microtia, in which a small part of the auricle is present. Anotia and microtia may occur unilaterally (only one ear affected) or ...
Orangutans have small ears and noses; the ears are unlobed. The mean endocranial volume is 397 cm 3. The cranium is elevated relative to the face, which is incurved and prognathous. Compared to chimpanzees and gorillas, the brow ridge of an orangutan is underdeveloped.
They have small ears and wide foreheads, with smooth horns that are generally dark in colour. In males (bulls), the horns sweep out from the sides of the head, and then curve backward; they typically range from 48 to 99 cm (19 to 39 in) in length.
They have small ears and eyes, and a large bald nose. Their fur is thick and coarse and its colour varies from light brown to grey and black. The Flinders Island wombat is the smallest of the three subspecies at around 75 cm (30 in) in length, while the Tasmanian wombat averages 85 cm (33 in) and a weight of 20 kg (44 lb).