Physical and Cognitive Development in Adolescence Flashcards
What is Puberty?
A term that encompasses all the (seen and unseen) changes that are needed for reproductive maturity
What is the Pituitary gland?
A gland that triggers other glands to release hormones (aka the master gland)
What is Adrenarche?
When the pituitary gland signals child’s adrenal to increase production of androgen at around age 7 or 8
What are the 2 sets of body changes triggered by hormones?
The development of sex organs (Primary Sex characteristics) and a broader set of development in the brain, bones, muscle, and other body organs
What do Primary Sex Characteristics include?
Growth of the testes/penis, ovaries, uterus, and vagina
What do Secondary Sex Characteristics include?
Breast development, changing voice pitch, beard growth, and growth of body hair
What is Menarche?
The beginning of ones menstrual cycle
Among Canadian girls, menarche occurs (on average) at around ____ years old
12.7
A girl’s body fat must reach a critical value of __% before menarche can occur
17%
What is the Secular Trend?
The decline in average age on menarche and the increase in average height for both children and adults that happened both between mid 18-19th in Western societies and when nutrition and health improve in other countries
The peak of the growth spurt typically comes fairly ____, while the development of a beard and a deeper voice occur __________________
Late, near the end of the sequence
Boys likely produce viable sperm between ____________, usually ______ they reach the peak of their growth spurt
12 and 14, before
What determines the psychological effects of puberty?
Whether an adolescent’s expectation of puberty matches the reality
Girls who develop earlier show ____ problems with academics/self-esteem, and ____ behavioural problems unless…
No, fewer. They associate with older teens that show antisocial behaviours
Boys who develop earlier exhibit ____ prosocial behaviour and are ____ successful in adulthood
More, more
How does grey matter develop at this stage?
An inverted “U” shape, where peak volumes are reached (in diff areas) at this age
How does a teenager’s brain change?
It doesn’t grow in size, but it matures and specializes and the volume of white matter steadily increases
What is one of the last parts of the brain to develop?
The frontal cortex
Adolescents grow _ to __cm a year
5 to 13
Girls attain most of their adult height by age ___ and boys grow until they are ________-years-old
16, 18 to 20
What happens to a teenagers physical growth pattern at this time?
The cephalocaudal and proximodistal patterns are reversed (hands and feet grow first and the trunk is the slowest to grow)
Muscle fibers become _____ and _______
thicker, denser
What happens to the proportion of fat and muscle in teenagers?
The proportion of fat rises among girls and falls among boys, the proportion of muscle rises is boys and declines in girls
The heart and lungs ________ considerably in size, and the heart rate _____
increase, drops