Unit 6 - Primary and Secondary Sexual Characteristics of the Male and Female Parts Flashcards
(12 cards)
What are Primary Sexual Characteristics?
Primary sexual characteristics are present at birth and comprise the external and internal genitalia (e.g.,the penis and testes in males and the vagina and ovaries in females).
What are Secondary Sexual Characteristics?
Secondary sex characteristics are features that appear during puberty in humans, and at sexual maturity in other animals.
What changes do both boys and girls face during puberty?
Pubic hair grows.
Underarm hair grows.
Sexual organs grow and develop.
What changes do boys go through during puberty?
Voice breaks.
Hair grows on face and body.
Body becomes more muscular.
Testes start to produce sperm cells.
What changes do girls go through during puberty?
Voice deepens gradually.
Hips get wider.
Breast develops.
Ovaries start to release egg cells - menstruation starts.
What is testosterone?
Produced by the testes; controls the development of male secondary sexual characteristics.
What is oestrogen?
Produced by the ovaries; controls the development of female secondary sexual characteristics.
Fill in the blanks; During puberty, boys develop __________ voices as their voice box (larynx) gets larger.
deeper
Fill in the blanks; One secondary sexual characteristic in girls is the development of __________.
breasts
Fill in the blanks; Increased production of the hormone __________ causes many changes in boys during puberty.
testosterone
Fill in the blanks; The growth of __________ hair is a secondary sexual characteristic common to both boys and girls.
pubic
Fill in the blanks; In girls, the hormone __________ is mainly responsible for the development of secondary sexual characteristics.
oestrogen
