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The visible part is called the auricle, also known as the pinna, especially in other animals.It is composed of a thin plate of yellow elastic cartilage, covered with integument, and connected to the surrounding parts by ligaments and muscles; and to the commencement of the ear canal by fibrous tissue.
A number of external characteristics can be used to distinguish legless lizards (including the hooded scaly-foot) from snakes: [8] [6] [7] Flap-footed lizards have vestigial hind limbs. Legless lizards have broad, fleshy tongues, dissimilar from the forked tongues of snakes. Most legless lizards have external ears. Ventral scales are in a ...
Auricular sulcus is the depression behind the ear next to the head; Concha is the hollow next to the ear canal; Conchal angle is the angle that the back of the concha makes with the side of the head; Crus of the helix is just above the tragus; Cymba conchae is the narrowest end of the concha; External auditory meatus is the ear canal
The outer ear is the external portion of the ear and includes the fleshy visible auricle, the ear canal, and the outer layer of the eardrum (also called the tympanic membrane). [2] [3] The auricle consists of the curving outer rim called the helix, the inner curved rim called the antihelix, and opens into the ear canal.
Following on the ideas of Étienne Geoffroy Saint-Hilaire (1818), and studies by Johann Friedrich Meckel the Younger (1820), Carl Gustav Carus (1818), Martin Rathke (1825), and Karl Ernst von Baer (1828), [5] the relationship between the reptilian jaw bones and mammalian middle-ear bones was first established on the basis of embryology and comparative anatomy by Karl Bogislaus Reichert (in ...
The tympanum is an external hearing structure in animals such as mammals, birds, some reptiles, some amphibians and some insects. [ 1 ] Using sound, vertebrates and many insects are capable of sensing their prey, identifying and locating their predators, warning other individuals, and locating potential mates and rivals by hearing the ...
The ears are slits on the sides of their heads under the spines. The external ear is created by a large cartilaginous funnel, deep in the muscle. [ 6 ] At 33 °C (91.4 °F), echidnas also possess the second-lowest active body temperature of all mammals, behind the platypus.
[44] [45] The external ears of microbats do not close to form a ring; the edges are separated from each other at the base of the ear. [45] Megabats eat fruit, nectar, or pollen, while most microbats eat insects; others feed on fruit, nectar, pollen, fish, frogs, small mammals, or blood. [41] "Chiroptera" from Ernst Haeckel's Kunstformen der ...