HSCO 508 EXAM 1 LIBERTY UNIVERSITY
COMPREHENSIVE SCRIPT FULL SOLUTION
HIGH ACHIEVEMENT 90 SCORE 2026
◉ first challenge in the newborn's life: Answer: perfusing their body and
oxygenating their blood
◉ what triggers the infant to take their first breath within the first 10
seconds? Answer: sudden change in temperature and environment
◉ in utero, the lungs are filled with: Answer: fluid
◉ movement in the womb that look like breathing movements are
called... Answer: practice breathing
◉ fetus is connected to: Answer: the umbilical cord to the placenta
◉ the placenta is responsible for Answer: respiratory gas exchange
◉ waste from the fetus is: Answer: passed back through the placenta to
the mother
◉ what is considered the control center in utero? Answer: the placenta
,◉ in fetal circulation/oxygenation, the normal cord is three vessels
Answer: 1 vein, 2 arteries
◉ carries oxygenated blood from the placenta to fetus Answer: umbilical
vein
◉ are paired and carry deoxygenated blood from fetus to placenta
Answer: umbilical arteries
◉ pulmonary resistance in utero is: Answer: high (to resist blood from
entering lungs)
◉ oxygenated blood is carried by the umbilical vein and bypasses the
lungs through Answer: the ductus arteriosus and foramen ovale
◉ extrauterine life is not possible until at least Answer: 22-24 weeks
gestation when pulmonary capillaries are formed
◉ at what weeks is pulmonary surfactant produced Answer: 24-28
weeks
◉ pulmonary surfactant provides Answer: alveolar stability and is
necessary to maintain lung expansion after birth
, ◉ sufficient amount of surfactant is present Answer: after 34 weeks
◉ what must drop after birth to have functional lungs? Answer:
pulmonary vascular resistance
◉ triggers in reducing PVR after birth Answer: ventilation of lungs,
exposure to oxygen
◉ over the next 30 seconds after first breath: Answer: pulmonary blood
flow increases and is oxygenated through the alveoli of lungs
◉ most common cause of respiratory distress within 24 hours of life
Answer: hyaline membrane disease (respiratory distress syndrome)
◉ respiratory distress syndrome is primarily a disease of
_______________ Answer: preterm infants (due to lack of surfactant)
◉ best way to treat respiratory distress syndrome is to Answer: prevent
it
◉ in fetal development, blood flow pattern goes: Answer: right atrium,
foramen ovale, left atrium, left ventricle, aorta
COMPREHENSIVE SCRIPT FULL SOLUTION
HIGH ACHIEVEMENT 90 SCORE 2026
◉ first challenge in the newborn's life: Answer: perfusing their body and
oxygenating their blood
◉ what triggers the infant to take their first breath within the first 10
seconds? Answer: sudden change in temperature and environment
◉ in utero, the lungs are filled with: Answer: fluid
◉ movement in the womb that look like breathing movements are
called... Answer: practice breathing
◉ fetus is connected to: Answer: the umbilical cord to the placenta
◉ the placenta is responsible for Answer: respiratory gas exchange
◉ waste from the fetus is: Answer: passed back through the placenta to
the mother
◉ what is considered the control center in utero? Answer: the placenta
,◉ in fetal circulation/oxygenation, the normal cord is three vessels
Answer: 1 vein, 2 arteries
◉ carries oxygenated blood from the placenta to fetus Answer: umbilical
vein
◉ are paired and carry deoxygenated blood from fetus to placenta
Answer: umbilical arteries
◉ pulmonary resistance in utero is: Answer: high (to resist blood from
entering lungs)
◉ oxygenated blood is carried by the umbilical vein and bypasses the
lungs through Answer: the ductus arteriosus and foramen ovale
◉ extrauterine life is not possible until at least Answer: 22-24 weeks
gestation when pulmonary capillaries are formed
◉ at what weeks is pulmonary surfactant produced Answer: 24-28
weeks
◉ pulmonary surfactant provides Answer: alveolar stability and is
necessary to maintain lung expansion after birth
, ◉ sufficient amount of surfactant is present Answer: after 34 weeks
◉ what must drop after birth to have functional lungs? Answer:
pulmonary vascular resistance
◉ triggers in reducing PVR after birth Answer: ventilation of lungs,
exposure to oxygen
◉ over the next 30 seconds after first breath: Answer: pulmonary blood
flow increases and is oxygenated through the alveoli of lungs
◉ most common cause of respiratory distress within 24 hours of life
Answer: hyaline membrane disease (respiratory distress syndrome)
◉ respiratory distress syndrome is primarily a disease of
_______________ Answer: preterm infants (due to lack of surfactant)
◉ best way to treat respiratory distress syndrome is to Answer: prevent
it
◉ in fetal development, blood flow pattern goes: Answer: right atrium,
foramen ovale, left atrium, left ventricle, aorta
