The long limb measurement of Turkana pastoralists indicate that the population: is on the continuum of variation observed in Allen's rule. Allen's rule indicates that humans will have: Longer limbs in hot environments and shorter limbs in cold environments.
What do the Long live measurements of Turkana pastoralists indicate?
The long limb measurements of Turkana pastoralists indicate that the population: is on the continuum based on living populations in the United States. The prenatal stage in humans is divided into: trimesters.
What happens when the epiphyses fuse to the diaphyses?
The epiphyseal plate is the growth zone between the diaphysis (shaft) of the long bone and the epiphysis (end) of the long bone. At skeletal maturity, growth ceases when the epiphyses fuse with the diaphyses, indicating that all the cartilage has been replaced with bone and epiphyseal closure has been achieved.
What is Wolff's Law Chapter 5?
Wolff's Law. The principle that bone is placed in the direction of functional demand; that is, bone develops where needed and recedes where it is not needed.
How do the Inuit and other cold adapted populations compare to people with a history of living in warmer climates?
Relative to people with a history of living in temperate climates, the Inuit and other cold-adapted populations: have short limbs and large bodies. says that bone mass is produced where it is needed and taken away when it is not needed.
What is long bone growth?
The epiphyseal plate is the area of growth in a long bone. It is a layer of hyaline cartilage where ossification occurs in immature bones. On the epiphyseal side of the epiphyseal plate, cartilage is formed. On the diaphyseal side, cartilage is ossified, and the diaphysis grows in length.
What have many studies in keeping with RC Lewontin's work shown about multiple biological traits?
What have many studies, in keeping with R.C. Lewontin's work, shown about multiple biological traits? When individuals of the same species are reproductively isolated, genetic differences may accumulate in sufficient number so that new species could emerge.
How does Wolff's law explain the development of markings that appear on bones of the skeletal system?
Bone is in a constant state of flux. This remodeling process allows bone to react to its environment and stressors. According to Wolff's law, bone is formed and strengthens along lines of mechanical stress. The corollary is that bone devoid of stress, atrophies (like most tissues in the body).
What is Wolff's law quizlet?
Wolff's law. States that bone in a healthy person or animal will adapt to the loads under which it is placed. Hormonal controls. determine whether and when remodeling occurs in response to changing blood calcium levels, but mechanical stress determines where it occurs.
What is Wolff's law using an example describe the biological and mechanical property changes that obey the Wolff's law?
According to Wolff, bones will adapt according to the demands placed on them. This concept is known as Wolff's law. For example, if your job requires you to perform a certain function, such as lifting heavy objects, your bones will adapt and strengthen over time to better support this task.
How is the Inuit culture influenced by the geography of the Arctic region?
Traditional Inuit way of life was influenced by the harsh climate and stark landscapes of the Arctic tundra – from beliefs inspired by stories of the aurora to practicalities like homes made of snow. Inuit invented tools, gear, and methods to help them survive in this environment.
How did the Inuit survive the cold Arctic climate?
The Inuit needed thick and warm clothing to survive the cold weather. They used animal skins and furs to stay warm. They made shirts, pants, boots, hats, and big jackets called anoraks from caribou and seal skin. They would line their clothes with furs from animals like polar bears, rabbits, and foxes.
How might decreasing sea ice and rising sea levels affect Inuit communities in Canada's far north?
Shrinking ice packs and more severe weather has made travel increasingly difficult and dangerous, often cutting people off from other communities and traditional hunting lands. There are no roads connecting Rigolet to other communities, so people here long ago came to rely on trails over the ice as their lifelines.
What does the fusion of the epiphyses indicate?
Epiphyseal fusion in primates is a process that occurs in a regular sequence spanning a period of years and thus provides biological anthropologists with a useful marker of maturity that can be used to assess age and stage of development.
What is the function of the epiphyses?
Epiphysis Definition - Epiphysis is the rounded end of a long bone, its primary function is to connect adjacent bones to form joints.
Why do we have unfused epiphyses?
They are born unfused to allow for continued growth, and they also serve to reduce injury when a baby falls down. For example, babies are born with kneecaps that are mostly just cartilage pieces and do not become one fully formed bone until the age of three.
What does epiphyseal fusion mean?
Anatomical terminology. The plate is only found in children and adolescents; in adults, who have stopped growing, the plate is replaced by an epiphyseal line. This replacement is known as epiphyseal closure or growth plate fusion.
When did seafaring travelers observe differences between people from distant lands?
can be traced to the Renaissance , when seafaring travelers observed differences between people from distant lands.
Who found that human races have no taxonomic significance?
R.C. Lewontin found that human "races" have no taxonomic significance. he demonstrated this through:
Do children at high altitudes have a larger chest cavity?
Children living at high altitudes develop a larger chest cavity by adulthood than children at lower altitudes. This is an example of:
Who found that human races have no taxonomic significance?
R.C. Lewontin found that human "races" have no taxonomic significance. He demonstrated this:
Which two rules express the relationship between body shape and temperature?
Allen's and Bergmann's rules express the relationship between body shape and temperature. Bergmann's rule states that heat-adapted species will have smaller bodies and cold-adapted species will have larger bodies. Allen's rule demonstrates that populations living in cold environments will have short limbs while those living in hot environments have long limbs. This long-term association between body shape and climate demonstrates that body shape is a genetic adaptation. Therefore, body shape and morphology reflect evolutionary and developmental processes.
When do bones remodel?
says that bones will remodel to become stronger when under stress, while mass is taken away and the bones become weaker when/where they are not used.