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UNIT 5

Across
Refers to the onset of menstruation in an adolescent female.
The principle that an animal's size is heat-related; smaller bodies are adapted to hot environments, and larger bodies are adapted to cold environments.
The process of maturation.
The production and secretion of milk from a female mammal's mammary glands, providing a food source to the female's young.
Refers to an organism's ability to maintain a constant body temperature despite great variations in environmental temperature.
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.
A difference in a physical attribute between the males and females of a species.
The density of bone per unit of measure.
The minimum amount of energy needed to keep an organism alive.
A phenotypic change, such as an increase in height, due to multiple factors.
Refers to bone reduced to its organic component.
Refers to the capacity of the brain to perceive, process, and judge information from the surrounding environment.
The speed with which an organism grows in size, often measured as the amount of growth per year.
Refers to the performance of complex movements and actions that require the control of nerves and muscles.
Down
A gradual change in some phenotypic characteristic from one population to the next.
The cessation of the menstrual cycle, signifying the end of a female's ability to bear children.
Cells responsible for bone formation.
The presence of high levels of cholesterol in an organism's blood; this condition may result from the dietary consumption of foods that promote high cholesterol or through the inheritance of a genetic disorder.
(BMR) The rate at which an organism's body, while at rest, expends energy to maintain basic bodily functions; measured by the amount of heat given off per kilogram of body weight.
Also known as baby teeth or milk teeth, this is the first set of teeth, which form in utero and erupt shortly after birth.
The principle that an animal's limb lengths are heat-related; limbs are longer in hot environments and shorter in cold environments.
A brown pigment that determines the darkness or lightness of a human's skin color due to its concentration in the skin.
The study of the sizes and proportions of the human body.
The maintenance of the internal environment of an organism within an acceptable range.
(bone) Refers to the strength of bone to resist bending and torsion.