Biology: The Dynamics of Life, North Carolina Edition

Section 3: Birth, Growth, and Aging

Birth, Growth, and Aging

1
After a baby is born, __________ is the first stage of human growth.
A)childhood
B)adolescence
C)puberty
D)infancy
2
Which of these is NOT a stage of human birth?
A)dilation stage
B)implantation stage
C)placental stage
D)expulsion stage
3
Which of these hormones stimulates uterine contractions during labor?
A)testosterone
B)oxytocin
C)estrogen
D)thyroxin
4
Which of these is NOT a change that most human adults experience as they age?
A)Less pigment is produced in hair follicles.
B)Metabolism becomes much faster.
C)Some of the skin's elasticity is lost.
D)Disks between the vertebrae in the spine compress.
5
The scar left from cutting a human baby's umbilical cord is called __________.
A)the birth canal
B)the chorionic villi
C)the navel
D)the cervix
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