"Opuntia pinkavae Opuntia pinkavae, common names Bulrush Canyon prickly-pear or Pinkava's pricklypear, is a species of cactus known only from northern Arizona and southern Utah. It grows in sunny locations in grasslands, on the edges of pinyon-juniper woodlands, on sandy or limestone soils. It was named for Dr. Donald Pinkava, professor emeritus at Arizona State University in Tempe. He studied ""Opuntia"" for many years. The species is one of the smaller members of the group, rarely more than 25 cm (10 inches) tall. Stems are green, flattened, up to 15 cm (6 inches) long. Flowers are magenta with yellow to"
"rate. While not all hair growth issues stem from malnutrition, it is a valuable symptom in diagnosis. Scalp hair grows, on average, at a rate of about 1.25 centimeters per month, and shampoos or vitamins have not been shown to noticeably change this rate. Hair growth rate also depends upon what phase in the cycle of hair growth one is actually in; there are three phases. The speed of hair growth varies based upon genetics, gender, age, hormones, and may be reduced by nutrient deficiency (i.e., anorexia, anemia, zinc deficiency) and hormonal fluctuations (i.e., menopause, polycystic ovaries, thyroid disease). The"
"lower values in average. In cosmetology, hair lengths are usually categorized according to the part of the body where the bulk of the longest hair terminates: ""chin level"", ""shoulder length"", ""lower shoulderblade""/""mid-back level"", ""waist length"", ""hip-length"", ""classic length"" (extends to almost ""buttock-length"", i.e. upper thigh-length, where the legs meet the buttocks), ""thigh-length"", ""knee-length"" and ""ankle/floor length"" hair. Hair usually takes about two years to reach shoulder length, and about seven years to reach waist-length/hip-length, including occasional trims (approximately 80–90 cm (32–36 inches) from forehead for most people) The maximum hair length that is possible to reach is about 15 cm"
"can lead to eutrophication and hypoxic events, eliminating organisms from an area entirely. A recent development in forensic science is the isotopic analysis of hair strands. Hair has a recognisable growth rate of 9-11mm per month or 15 cm per year. Human hair growth is primarily a function of diet, especially drinking water intake. The stable isotopic ratios of drinking water are a function of location, and the geology that the water percolates through. Sr, Sr and oxygen isotope variations are different all over the world. These differences in isotopic ratio are then biologically 'set' in our hair as it"
"(6 in) for infants (below the age of 1), about 60 cm (24 in) for children, and generally 100 cm (40 in) for adults. Documentation for decrease of the maximum length with age cannot be found in the literature. Some individuals can reach excessive lengths. Lengths greater than 150 cm (59 in) are frequently observed in long hair contests. Xie Qiuping had the longest documented hair in the world, measuring 5.627 m (18 ft 5.54 in) in May 2004. The maximum terminal hair length depends on the length of the anagen (period of hair growth) for the individual. Waist-length hair"
"scalp. A #1 guard leaves 1/8 inch (3 mm), one week's growth of hair, on the scalp; a #2 guard leaves 2/8"" (6.3 mm), two weeks' hair growth, on the scalp; a #3 guard leaves 3/8"" (9 mm), three weeks' hair growth on the scalp; and so on. Regular haircut A regular haircut is a men's and boys' hairstyle that has hair long enough to comb on top, a defined or deconstructed side part, and a short, semi-short, medium, long, or extra long back and sides. The style is also known by other names including taper cut, regular taper cut,"
"that strip the hair of its natural oils. Having some hairs that are shorter than others is not necessarily a sign of breakage. Hair naturally sheds as it reaches the end of its growth cycle, and a new hair grows in its place; the average lifespan is about six years. In a humid environment, moisture penetrates the hair shaft and is absorbed into the cortex, causing the proteins there to swell. Different kinds of proteins absorb moisture and swell differently, causing the hair shaft to twist and bend in an irregular pattern. To prevent this, Schueller recommends using conditioners and"
"years of life. Hair grows everywhere on the external body except for mucus membranes and glabrous skin, such as that found on the palms of the hands, soles of the feet, and lips. Hair follows a specific growth cycle with three distinct and concurrent phases: anagen, catagen, and telogen phases; all three occur simultaneously - while one strand of hair may be in the anagen phase, another may be in the telogen phase. Each has specific characteristics that determine the length of the hair. The body has different types of hair, including vellus hair and androgenic hair, each with its"
"through the blood stream and deposit in the cortex of the hair. Hair is stable and the deposits are permanently embedded in the hair, so hair acts like a tape recorder — “recording” drug deposits in proportion to use over time as drugs are deposited in proportion to use. Hair grows at approximately the rate of ½ an inch per month and takes about 5 days to grow out past the external layer of skin. Psychemedics’ standard test uses a 1 ½ inch sample of head hair, which provides an approximate 3 month history of drug use. Body hair can"
"hair and androgenic hair, each with its own type of cellular construction. This varied construction gives the hair unique characteristics, serving specific purposes, mainly warmth (redundant in modern humans) and protection. Most humans develop the longest thickest hair on their scalps and (mostly observed in males) faces. This hair will usually grow to several feet before terminating, but many humans develop much longer hair. The three stages of hair growth are the anagen, catagen, and telogen phases. Each strand of hair on the human body is at its own stage of development. Once the cycle is complete, it restarts and"
"square centimeter. This was significantly lower than that of Caucasian hair, which, on average, has approximately 227 hairs per square centimeter. Loussourarn found that afro-textured hair grows at an average rate of approximately 256 micrometers per day, whereas Caucasian hair grows at approximately 396 micrometers per day. In addition, due to a phenomenon called 'shrinkage', afro-textured hair that is a given length when stretched straight can appear much shorter when allowed to naturally coil. Shrinkage is most evident when afro-hair is (or has recently been) wet. The more coiled the hair texture, the higher its shrinkage. An individual hair's shape"
"Human hair growth The growth of human hair occurs everywhere on the body except for the soles of the feet, the lips, palms of the hands, some external genital areas, the navel, scar tissue, and, apart from eyelashes, the eyelids. Hair is a stratified squamous keratinized epithelium made of multi-layered flat cells whose rope-like filaments provide structure and strength to the hair shaft. Hair follows a specific growth cycle with three distinct and concurrent phases: anagen, catagen, and telogen. Each phase has specific characteristics that determine the length of the hair. The body has different types of hair, including vellus"
"Outliner/edger clippers have a very fine cutting blade and no taper lever and are used to outline a defined arch around the ear and for block cuts, the edge at the nape of the neck. Human scalp hair grows on average about one eighth inch per week or one half inch per month. Most clipper guards are numbered in eighths of an inch. The number of the guard denotes the number of weeks of hair growth left on the scalp when a clipper with a certain numbered guard is guided over the head with the guard in contact with the"
"cases. Hair is capable of recording medium to long-term or high dosage substance abuse. Chemicals in the bloodstream may be transferred to the growing hair and stored in the follicle, providing a rough timeline of drug intake events. Head hair grows at rate of approximately 1 to 1.5 cm a month, and so cross sections from different sections of the follicle can give estimates as to when a substance was ingested. Testing for drugs in hair is not standard throughout the population. The darker and coarser the hair the more drug that will be found in the hair. If two"
"(between about 9 and 15 years of age), when a period of rapid growth occurs. Growth is not uniform in rate and timing across all body parts. At birth, head size is already relatively near to that of an adult, but the lower parts of the body are much smaller than adult size. In the course of development, then, the head grows relatively little, and torso and limbs undergo a great deal of growth. Genetic factors play a major role in determining the growth rate, and particularly the changes in proportion characteristic of early human development. However, genetic factors can"
"hair in 2010 was worth $US 1.24 billion. Hair has great social significance for human beings. The world's longest documented hair belongs to Xie Qiuping (China), at 5.627 m (18 ft 5.54 in) when measured on 8 May 2004. She has been growing her hair since 1973, from the age of 13. Healthy hair indicates health and youth (important in evolutionary biology). Hair color and texture can be a sign of ethnic ancestry. Facial hair is a sign of puberty in men. White hair is a sign of age or genetics, which may be concealed with hair dye (not easily"
"vary among some individuals. Arm, leg, chest, abdominal, and back hair become heavier more gradually. There is a large range in amount of body hair among adult men, and significant differences in timing and quantity of hair growth among different racial groups. Facial hair is often present in late adolescence, but may not appear until significantly later. Facial hair will continue to get coarser, darker and thicker for another 2–4 years after puberty. Some men do not develop full facial hair for up to 10 years after the completion of puberty. Chest hair may appear during puberty or years after,"
"covers a period of 30 to 90 days. The growth of head hair is usually at the rate of 0.5 inches per month. The hair sample is cut close to the scalp and 80 to 120 strands of hair are needed for the test. In the absence of hair on the head, body hair can be used as an acceptable substitute. This includes facial hair, the underarms, arms, and legs or even pubic hair. Because body hair grows at a different rate than head hair, the timeframe changes, with scientists estimating that drug use can be detected in body hair"
"hair extensions, wigs, and hairpieces. ""(Ages and names stated are at time of contest.)"" !Contestant ! 1 ! 2 ! 3 ! 4 ! 5 ! 6 ! 7 ! 8 ! 9 ! 10 ! 11 ! 12 ! 13 ! 14 ! 15 ! 16 ! 17 ! 18 ! 19 ! 20 ! 21 ! 22 ! 23 ! 24 Each episode, with the guidance of the six celebrity coaches, the contestants compete in the following challenges; ""(Ages and names stated are at time of contest.)"" ""One week of competition includes three episodes"" ! rowspan=""2"" |Contestants !"
"normally and treatment is not indicated.A similar situation occurs in women taking the fertility-stimulating drug clomiphene. Other causes of hair loss include: Genetic forms of localized autosomal recessive hypotrichosis include: Hair follicle growth occurs in cycles. Each cycle consists of a long growing phase (anagen), a short transitional phase (catagen) and a short resting phase (telogen). At the end of the resting phase, the hair falls out (exogen) and a new hair starts growing in the follicle beginning the cycle again. Normally, about 40 (0–78 in men) hairs reach the end of their resting phase each day and fall out."
"Facial hair Facial hair is hair grown on the face, usually on the chin, cheeks, and upper lip region. It is typically a secondary sex characteristic of human males. Men typically start developing facial hair in the later years of puberty or adolescence, between seventeen and twenty years of age, and most do not finish developing a full adult beard until their early twenties or later. This varies, as boys may first develop facial hair between fourteen and sixteen years of age, and boys as young as eleven have been known to develop facial hair. Women are also capable of"
"can be explained by varied growth cycles in those two regions. The same goes for differences in body hair length seen in different people, especially when comparing men and women. Like much of the hair on the human body, leg, arm, chest, and back hair begin as vellus hair. As people age, the hair in these regions will often begin to grow darker and more abundantly. This will typically happen during or after puberty. Men will often have more abundant, coarser hair on the arms and back, while women tend to have a less drastic change in the hair growth"
"routine hoof care by a professional farrier on average every six to eight weeks, depending on the animal, the work it performs and, in some areas, climate conditions. Hooves usually grow faster in the spring and fall than in summer or winter. They also appear to grow faster in warm, moist weather than in cold or dry weather. In damp climates, the hooves tend to spread out more and wear down less than in dry climates, though more lush, growing forage may also be a factor. Thus, a horse kept in a climate such as that of Ireland may need"
"2.5 to 3 months after the hair begins to shed. Regrowth may be sparser after treatment. UV levels of either 20 or 50 mJ cm in the UV-B range have been shown to inhibit hair growth, reduce hair melanin and damage hair follicles. Human hair growth The growth of human hair occurs everywhere on the body except for the soles of the feet, the lips, palms of the hands, some external genital areas, the navel, scar tissue, and, apart from eyelashes, the eyelids. Hair is a stratified squamous keratinized epithelium made of multi-layered flat cells whose rope-like filaments provide structure"
"average height for adult human females is about . Shrinkage of stature may begin in middle age in some individuals, but tends to be typical in the extremely aged. Through history human populations have universally become taller, probably as a consequence of better nutrition, healthcare, and living conditions. The average mass of an adult human is for females and for males. Like many other conditions, body weight and body type is influenced by both genetic susceptibility and environment and varies greatly among individuals. (see obesity) Although humans appear hairless compared to other primates, with notable hair growth occurring chiefly on"
"for men every 15 days. The country's official hairstyles did allow men over 50 years old to grow their upper hair up to long, to disguise balding. An initial five-part series of the show featured officially endorsed haircut styles, while a later series went a step further by showing certain men as examples of how ""not"" to trim one's hair. With each example, the show conveyed the person's name and where they lived (or worked) via subtitles and/or voice. For example, in one episode (shown in January 2005) a North Korean citizen named Mr. Ko Gwang Hyun, whose unkempt hair"
"or exogen, that is independent of anagen and telogen in which one or several hairs that might arise from a single follicle exits. Normally up to 90% of the hair follicles are in anagen phase, while 10–14% are in telogen and 1–2% in catagen. The cycle's length varies on different parts of the body. For eyebrows, the cycle is completed in around 4 months, while it takes the scalp 3–4 years to finish; this is the reason eyebrow hair have a much shorter length limit compared to hair on the head. Growth cycles are controlled by a chemical signal like"
"appear until significantly later. Some men do not develop full facial hair for 10 years after puberty. Facial hair continues to get coarser, darker and thicker for another 2–4 years after puberty. The major landmark of puberty for males is spermarche, the first ejaculation, which occurs, on average, at age 13. For females, it is menarche, the onset of menstruation, which occurs, on average, between ages 12 and 13. The age of menarche is influenced by heredity, but a girl's diet and lifestyle contribute as well. Regardless of genes, a girl must have a certain proportion of body fat to"
"pubic hair at puberty. At this time, the pituitary gland secretes gonadotropin hormones which trigger the production of testosterone in the testicles and ovaries, promoting pubic hair growth. The average ages pubic hair begins to grow in males and females are 12 and 11, respectively. However, in some females, pubic hair has been known to start growing as early as age 7. Just as individual people differ in scalp hair color, they can also differ in pubic hair color. Differences in thickness, growth rate, and length are also evident. Islamic hygienical jurisprudence teaches that pubic and armpit hair must be"
"or longer is only possible to reach for people with long anagen. The anagen lasts between 2 and 7 years, for some individuals even longer, and is followed by shorter catagen (transition) and telogen (resting) periods. At any given time, about 85% of hair strands are in anagen. The fibroblast growth factor 5 (FGF5) gene affects the hair cycle in mammals including humans; blocking FGF5 in the human scalp (by applying a herbal extract that blocked FGF5) extends the hair cycle, resulting in less hair fall and increased hair growth. In ancient Greece, long male hair was a symbol of"
"the upper lip, typically between 14 and 17 years of age. It then spreads to form a moustache over the entire upper lip. This is followed by the appearance of hair on the upper part of the cheeks, and the area under the lower lip. The hair eventually spreads to the sides and lower border of the chin, and the rest of the lower face to form a full beard. As with most human biological processes, this specific order may vary among some individuals. Facial hair is often present in late adolescence, around ages 17 and 18, but may not"
"Beard A beard is the collection of hair that grows on the chin, upper lip, cheeks and neck of humans and some non-human animals. In humans, usually only pubescent or adult males are able to grow beards. However, women with hirsutism, a hormonal condition of excessive hairiness, may develop a beard. Throughout the course of history, societal attitudes toward male beards have varied widely depending on factors such as prevailing cultural-religious traditions and the current era's fashion trends. Some religions (such as Islam and Sikhism) have considered a full beard to be absolutely essential for all males able to grow"
"the 20th century. While underarm shaving was quickly adopted in some English speaking countries, especially in the US and Canada, it did not become widespread in Europe until well after World War II. Since then the practice has spread worldwide. Some men also choose to shave their armpits. Facial hair, as the name suggests, grows primarily on or around one's face. Both men and women experience facial hair growth. Like pubic hair, non-vellus facial hair will begin to grow in around puberty. Moustaches in young men usually begin to grow in at around the age of puberty, although some men"