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The formation of goose bumps in humans under stress is considered by some to be a vestigial reflex [4], though visible piloerection is associated with changes in skin temperature in humans [5]. The reflex of producing goose bumps is known as piloerection or the pilomotor reflex , or, more traditionally, [ 6 ] horripilation .
Vernix caseosa. Newborn baby immediately after birth, covered in vernix. Vernix caseosa, also known as vernix, is the waxy white substance found coating the skin of newborn human babies. [1] It is produced by dedicated cells and is thought to have some protective roles during fetal development and for a few hours after birth.
Babies with this condition often bleed during birth. The lips are pulled back by the dry skin . [14] Joints are sometimes lacking in movement, and may be below the normal size. Hypoplasia is sometimes found in the fingers. Polydactyly has been found on occasion.
Human to animal breastfeeding has been practiced in some different cultures during various time periods. The practice of breastfeeding or suckling between humans and other species occurred in both directions: women sometimes breastfed young animals, and animals were used to suckle babies and children. Animals were used as substitute wet nurses ...
In modern humans, skin and hair colour is regulated by the melanocyte-stimulating hormone—which increases the proportion of eumelanin (black pigment) to phaeomelanin (red pigment)—which is encoded by the MC1R gene. There are five known variants in modern humans of the gene which cause loss-of-function and are associated with light skin and ...
Thalidomide is a known human teratogen and carries an extremely high risk of severe, life-threatening birth defects if administered during pregnancy. It causes skeletal deformities such as amelia (absence of legs and/or arms), absence of bones, and phocomelia (malformation of the limbs).
428 million (2015) [ 4 ] Hookworm infection is an infection by a type of intestinal parasite known as a hookworm. [ 1 ][ 5 ] Initially, itching and a rash may occur at the site of infection. Those only affected by a few worms may show no symptoms. Those infected by many worms may experience abdominal pain, diarrhea, weight loss, and tiredness.
Cyclopia (named after the Greek mythology character cyclopes), also known as alobar holoprosencephaly, is the most extreme form of holoprosencephaly and is a congenital disorder (birth defect) characterized by the failure of the embryonic prosencephalon to properly divide the orbits of the eye into two cavities.