The iris contains muscles that allow the pupil to become larger and smaller !
Answer:
As the lungs expand, the alveoli in the lungs are cleared of fluid. An increase in the baby's blood pressure and a major reduction in the pulmonary pressures reduce the need for the ductus arteriosus to shunt blood.
: having the nucleus complexly lobed and often of varied form especially : of, relating to, or being a polymorphonuclear leukocyte
The answer is ultrasound. An ultrasound is used as a diagnostic tool. It uses high-frequency sound waves to examine a person’s internal organs. Ultrasound is also commonly used in pregnancy.
