Chapter 11 Adolescent Physical Development Flashcards
Maturity between boys and girls:
Girls mature quicker than boys, girls peak at age 12 as boys peak at age 13.5
Maturation and weight in girls:
Girls that are lighter mature later, heavier girls mature quicker.
Leptin is:
pubertal timing and allows for hunger to be controlled
SES in Pubertal timing:
The middle class mature earlier due to having an overall balanced life style, not too much and not too little.
Ethnic groups and Maturation:
AA are bigger, Asian Americans are smaller.
Family experiences and Maturation:
Individuals that come from HIGH stress homes tend to increase the likelihood of maturing quicker.
Individuals that also come from homes that have high conflict tend to mature quicker as well.
Secular trends; Motor Skills, Physical size, and sexual maturation:
Generational changes:
- individuals are performing acts sooner that involve hormonal changes
- individuals are becoming bigger and taller
- sexual maturation is happening sooner due to stress and home conflict
What has caused the increase in this secular trend?
Industrial revolution
Food was not as readily available as it was before, so we have more access to food (increased food) and increased labor has been present (increase stress)
Which of the following is NOT a predictor of a girl's pubertal timing? A ethnic group B body fat C geographic location D family conflict
C geographic location
Maturing Hormones and the Endocrine System:
Hypothalamus, Pituitary glands, and gonads (ovaries and testes)
How does an individual develop their gonads or ovaries?
The hypothalamus start us off with a electrical message to the pituitary glands known as the master glands releasing chemical messages known as GHR into the gonads allowing for release or profoundness of testosterone (development of testes) and estrogen (development of ovaries) into the human body.
This release of hormonal chemicals effect the primary and secondary sex characteristics.
Which endocrine gland directly affects the functioning of the gonads? A Testes B Adrenals C Pituitary D Hypothalamus
C Pituitary
Pubertal Development in Boys and Girls:
Growth Spurt
BOYS age 12.5
GIRLS age 10
Proportions
BOYS shoulders broaden and longer legs
GIRLS hips broaden
Muscle-fat makeup
BOYS gain more muscle, aerobic efficiency
GIRLS gain more fat (due to enlargement of uterus)
Brain Development
INCREASE: planning, abstraction, attention, self regulation
INCREASED CONNECTION: among regions of the brain, and sensory excitatory messages
Secondary Sex Characteristics
Increased hair
voice change in males
body proportions in females changes
EXTERNAL CHANGES