Test 5 Flashcards
______________ began at age 15 and lasted a few months
adolescence 100 years ago
____________ now lasts a decade or more
adolescence
______________ is when separate period of development has now been identified
emerging adulthood
What is the age of puberty?
8-14
How long does puberty typically last?
3-5 years
after puberty, many more years are required to achieve this
psychosocial maturity
__________ is when puberty begins before age 8 and happens between 1 and 5000 people
precocoius puberty
signaling that ovulation has begun
menarche
pregnancy is biologically possible, but ovulation and menstruation are often irregular for how long?
4 years after menarche
what is the average age of menarche for normal-weight girls
12.5 years
____________ is boys first ejaculation
spermarche
How early can erection occur?
infancy
____________ signals sperm production
ejaculation
What is the average age for spermarche?
just under 13
_______________ is the paired sex glands (ovaries in females, testicles in males).
gonads
What do gonads produce?
hormones and gametes
________ is a sex hormone, considered the chief estrogen.
estradiol
____________ is a sex hormone, best known of the androgens
testosterone
__________ is when a day-night cycle of biological activity occurs approximately every 24 hours
circadian rhythem
__________ cause a phase delay in sleep-wake cycles
hormones
what work together to make teens increasingly sleep-deprived with each year of high school
biology (circadian rhythms) and culture (parties and technology)
What are the reason for variation?
- genes
- gender
- secular trend
- fat
- stress
_____________ account for about 2/3 of variation in age of puberty
genes
what have a marked effect on age of puberty onset
genes on the sex chromosome
when to girls generally develop in relation to boys?
ahead
Children who have a relatively large proportion of what experience puberty sooner than do their thin contemporaries?
body fat
____________ is adolescents in 21st century begin puberty earlier
secular trend
_____________ is likely to begin puberty earlier if more what in life
stress
____________Tend to have lower self-esteem, more depression, poorer body image than later maturing girls.
early maturing girls
______________ is more aggressive, law breaking, and alcohol abusing than later-maturing boys
early maturing boys
______________ tend to be more anxious, depressed, and afraid of sex
slow develop boys
- relatively sudden and rapid
- each body part increases in size and on a schedule
- height spurt follows increase in body fat, then muscle spurt occurs
- lungs triple in weight = slower and deeper breathing
- heart doubles in size and heartbeat slows, decrease pulse rate, increase blood pressure
- only lymphoid system (tonsils and adenoids) decreases in size- teens less susceptible to respiratory ailments
growth spurt
____________ is a school for children in the grades between elementary and high school. Middle school usually begins with grade 6 and ends with grade 8.
middle school
____________ is the idea that intellectual ability is innate, a fixed quantity present at birth. Those who hold this view underrate the role of effort on achievement.
entity theory of intelligence
___________ is the idea that intelligence can be increased by effort, with attention and practice, as in class participation and homework
incremental theory of intelligence
- skin becomes oilier
- hair on head and limbs becomes coarser and darker
- new hair under arms, on faces, over external sex organs
skin and hair
___________ is more than a growth characteristic, display of sexuality
hair
___________ is associated with reproduction (gonads, vagina, penis)
primary sex characteristics
_______________ is a physical change not directly associated with reproduction (body fat, hair)
secondary sex characteristics
___________ percentage of HS seniors who eat recommended vegetable servings, creates a deficiency in intake of necessary vitamins/minerals
16%
menstruation and intensive physical labor/ sports participation may deplete what
iron