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The nerve fibers forming the optic nerve exit the eye posteriorly through a hole in the sclera that is occupied by a mesh-like structure called the lamina cribrosa.It is formed by a multilayered network of collagen fibers that extend from the scleral canal wall.
The depth of the olfactory fossa is determined by the height of the lateral lamella of the cribriform plate. Keros in 1962, classified the depth into three categories. [3] type 1: has a depth of 1–3 mm (26.3% of population) type 2: has a depth of 4–7 mm (73.3% of population) type 3: has a depth of 8–16 mm (0.5% of population)
In a 2019 study, a correlation has been shown between the size of the dog and the functions of memory and self-control, with larger dogs performing significantly better than smaller dogs in these functions. However, in the study brain size did not predict a dog's ability to follow human pointing gestures, nor was it associated with their ...
2. Hollow Food Puzzles. As the name implies, these food puzzles are hollow, as they are meant to be filled with food. Their shape makes it challenging for dogs to extract the food, keeping them ...
“A dog’s face will be pointed away from the source of stress, but the eyes are still heavily focused on or flicking toward the source of anxiety, with the whites of the eyes (usually not ...
Just looking dogs in the eye may even boost levels of oxytocin, a hormone associated with feelings of love and trust. But few past studies have pinpointed what happens in people’s brains when ...
This is a result of the slippery lamellae sliding past each other when the corpuscle is structurally deformed by external pressure so that effects of sustained pressure are soon dissipated by the lamellae, abolishing deformation of the central axon terminal itself. [8] The capsule thus acts as a physiological high-pass filter. [3]
Dogs have ear mobility that allows them to rapidly pinpoint the exact location of a sound. Eighteen or more muscles can tilt, rotate, raise, or lower a dog's ear. A dog can identify a sound's location much faster than a human can, as well as hear sounds at four times the distance. [41] Dogs can lose their hearing from age or an ear infection. [42]