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Cephalocaudal trend. The cephalocaudal trend, or cephalocaudal gradient of growth, refers to the pattern of changing spatial proportions over time during growth. One example of this is the gradual change in head size relative to body size during human growth. During prenatal growth, from conception to 5 months, the head grows more than the body.
In mammals, the growth rate of nails is related to the length of the terminal phalanges (outermost finger bones). Thus, in humans, the nail of the index finger grows faster than that of the little finger; and fingernails grow up to four times faster than toenails. [10]
Progeria is a specific type of progeroid syndrome, also known as Hutchinson–Gilford syndrome or Hutchinson–Gilford progeroid syndrome (HGPS). [ 8 ] A single gene mutation is responsible for causing progeria. The affected gene, known as lamin A (LMNA), makes a protein necessary for holding the cell nucleus together.
Your manicure, chemicals, or your diet can cause thin, flaking, or peeling nails. Dermatologists explain why nail peeling happens and what to do about it.
Extremely thin nails may not be the best for acrylics. 4. It might be hard to spot, but infection below the nail bed can become all too real. This also goes back to overused, worn out nail tools ...
Ingrown nail. An ingrown nail, also known as onychocryptosis from Greek: ὄνυξ (onyx) 'nail' and κρυπτός (kryptos) 'hidden', is a common form of nail disease. It is an often painful condition in which the nail grows so that it cuts into one or both sides of the paronychium or nail bed.
Child development stages are the theoretical milestones of child development, some of which are asserted in nativist theories. This article discusses the most widely accepted developmental stages in children. There exists a wide variation in terms of what is considered "normal", caused by variations in genetic, cognitive, physical, family, cultural, nutritional, educational, and environmental ...
Babbling. A babbling infant, age 6 months, making ba and ma sounds. Babbling is a stage in child development and a state in language acquisition during which an infant appears to be experimenting with uttering articulate sounds, but does not yet produce any recognizable words.