ANIMAL PHYSIOLOGY
NERVOUS SYSTEM
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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earlier of adolescence
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end of adolescence
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childhood
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earlier of adulthood
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Detailed explanation-1: -Boys tend to have their growth spurt about two years later than girls. Peak growth for boys is right before spermarche (sperm in seminal fluid) and is about 9 centimeters/year. Growth spurts for boys tend to last longer than for girls.
Detailed explanation-2: -The typical girl is slightly shorter than the typical boy at all ages until adolescence. She becomes taller shortly after age 11 because her adolescent spurt takes place two years earlier than the boy’s.
Detailed explanation-3: -During puberty, males grow muscle much faster than females, and females experience a higher increase in body fat and bones become harder and more brittle. An adolescent’s heart and lungs increase in both size and capacity during puberty; these changes contribute to increased strength and tolerance for exercise.
Detailed explanation-4: -Around 10 years of age, girls at the 50th percentile begin to grow taller more rapidly than boys. The growth rate for girls continues to be greater than boys between 10 and 13 years of age. After 13 years of age, the height spurt of girls generally is completed and the boys’ height spurt is in its early phase.
Detailed explanation-5: -In Stage 4, puberty hits full stride. Between the ages of 11 and 16 years, boys experience: Growth in penis size and darkening of the skin on their scrotum and testicles. Red ridges on their testicles called rugae will begin to develop.