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Emotional pain is the pain experienced in the absence of physical trauma, e.g. the pain experienced after the loss of a loved one, or the break-up of a relationship. It has been argued that only primates can feel "emotional pain", because they are the only animals that have a neocortex – a part of the brain's cortex considered to be the ...
A frog's ear drum works in very much the same way as does a human eardrum. It is a membrane that is stretched across a ring of cartilage like a snare drum that vibrates. Crossing the middle ear chamber there is an ossicle called the columella that is connected to the tympanum, and another ossicle, the operculum, that connects this to the oval ...
Surface rendering of the head of the frog Atelopus franciscus, with ear parts highlighted. Frogs can hear both in the air and below water. They do not have external ears; the eardrums (tympanic membranes) are directly exposed or may be covered by a layer of skin and are visible as a circular area just behind the eye. The size and distance apart ...
Hemiphractus is a genus of frogs, the horned treefrogs, in the family Hemiphractidae. [1] [2] These overall brownish frogs have a pointed snout and a casque on the head.They are nocturnal, relatively rare and native to humid lowland and highland forests in northern South America (Amazon east as far as Tapajós, Chocó-Magdalena and northern Andes) and Panama, where typically found on the ...
Wood frogs have managed to survive further north than any other North American amphibian which reduces the competition they have to face for food and resources. However, they are a cold-blooded ...
The columella resides in the air-filled tympanic cavity of the middle ear. The footplate, or proximal end of the columella, rests in the oval window. Sound is conducted through the oval window to the interior of the otic capsule. [2] This motion ultimately stimulates sensory cells in the inner ear. [3]
The adult male frog measures 44.3 to 48.9 mm in snout-vent length. This frog has smooth skin on the dorsal side of its back and legs and granular skin on its ventrum. The top of the head and top of the back are either light brown or olive green in color. The sides of the head have dark brown masking from the nose to the tympanum.
The population of the mountain chicken frog, once abundant in the Caribbean, has dropped by over 99% in 20 years due to a deadly fungal disease.