Chapter 11 and 12 Flashcards
(127 cards)
Adolescence
Transition between childhood and adulthood
The teenage years
Puberty
The physical changes that culminate in sexual maturity
Pueberty begins when the ______ sigmas to a child’s _______ to increase its production of androgen
Pituitary gland
Adrenal gland
Endocrine Gland
Glands that secrete hormones governing growth and other aspects of physical development
Pituitary gland
Glands that trigger other glands to release hormones
The master Gland
Gonadotrophic hormones
Hormones responsible for the development of the sex organs
Hormone responsible for developing testes
Testosterone
Hormone responsible for the development of the ovaries
Estrogen
Primary sex characteristics
Include the growth of the testes and penis for men
Growth of ovaries, uterus, and vagina in the female
Secondary sex characteristics
Include breast development in girls
Changing voice pitch and beard growth in men
Pubic hair for both
Five stages of sexual maturity
Stage 1: predescent stage Stage 2: first signs of Change Stage 3: intermediate step Stage 4: intermediate step Stage 5: final development of adult characteristics
Menarche
Beginning of menstrual cycles
Occurs two years after beginning of visible changes
Sexual development on girls
Changes in breast and pubic hair, followed by growth spurt, full development of breast and pubic hair
Menarche occurs averagely around age
12.7
Secular trend
Decline in average age of menarche, due to increased in nutrition and health improvement
Back in 19th century, people were shorter and got late periods (age 17)
Sexual development in boys
Peak of growth comes typically late in physical development
Beard development and voice change occurs near end as well
Viable sperm available between 12-14, before they reach peak height
Timing of pueberty
Girls who are early developers experience no _____________ issues or falling _______.
They may associate with ______ teens who show ______ behaviours
Self esteem
Falling grades
Older
Antisocial
Girls attain most their adult height at age _____ while boys continue to grow until __/___ years
16
18-20
When the skeleton grows, the normal _____ and _____ rules are _____
Cephalocaudal and proximodistal
Reversed!!
Meaning hands and feet grow first in pueberty
Changes in jaw and teeth
In adolescence both jaws grow forward when the permenent teeth come in
Also brings the forehead forward
Joint development: boys vs girls
Girls wrists completely develop by mid teens. Boys finally catch up around 18 years old with finer cordination and gain superiority over girls
The muscular system in adolescents
_________ become thicker and denser. Meaning boys and girls both increase in _____.
Healthy girls, %___ rises and %____ falls
Healthy boys, %____ falls and %_____ rises
Muscle fibers
%fat rises and %muscle falls
%fat falls and %muscle rises
Heart and lungs ______ in size and _______ drops.
Increase
Heart rate
2 major brain spurts in teenage years
1) age 13-15: cerebra cortex become thicker, efficient neuronal pathways
2) age 17-early adulthood: frontal lobes of cerebral cortex develop (area responsible for logic and planning)