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Earwigs have been rarely known to crawl into the ears of humans, [58] and they do not lay eggs inside the human body or human brain as is often claimed. [ 59 ] [ 60 ] There is a debate whether earwigs are harmful or beneficial to crops, as they eat both the foliage and the insects eating such foliage, such as aphids , though it would take a ...
The cause of a selective pressure strong enough to cause this shift is an area of much debate. Some hypotheses include the existence of significantly lower reproductive fitness in people with less melanin due to lethal skin cancer, lethal kidney disease due to excess vitamin D formation in the skin of people with less melanin, or simply natural ...
Nasal hair or nose hair is the hair in the human nose. Adult humans have hair in the nostrils . Nasal hair functions include filtering foreign particles from entering the nasal cavity, and collecting moisture. [1]
Human interactions with chimpanzees may be especially dangerous if the chimpanzees perceive humans as potential rivals. [182] At least six cases of chimpanzees snatching and eating human babies are documented. [183] A chimpanzee's strength and sharp teeth mean that attacks, even on adult humans, can cause severe injuries.
A woman with dark skin. Dark skin is a type of human skin color that is rich in melanin pigments. People with dark skin are often referred to as black people, although this usage can be ambiguous in some countries where it is also used to specifically refer to different ethnic groups or populations.
Injuries of the middle and internal ear may include a perforated eardrum or trauma caused by extreme pressure changes. The ear is also highly sensitive to blast injury. The bones of the ear are connected to facial nerves, and ear injuries can cause paralysis of the face. Trauma to the ear can cause hearing loss.
The human body always works to remain in homeostasis. One form of homeostasis is thermoregulation. Body temperature varies in every individual, but the average internal temperature is 37.0 °C (98.6 °F). Sufficient stress from extreme external temperature may cause injury or death if it exceeds the ability of the body to thermoregulate.
This causes the cell to depolarise, and creates an action potential that is transmitted along the spiral ganglion, which sends information through the auditory portion of the vestibulocochlear nerve to the temporal lobe of the brain. [13] The human ear can generally hear sounds with frequencies between 20 Hz and 20 kHz (the audio range).
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