When a Baby Is Born, What Change(s) Need to Occur

question 21

Multiple Choice

When a baby is born, what change(s) need to occur in fetal circulation for it to survive?

• A) The oval opening (foramen ovale) must close.
• B) The arterial duct must close.
• C) The umbilical arteries and veins close.
• D) Fetal blood must be shunted toward the lungs after tying off the umbilical cord.
• E) All of the answer choices describe changes that need to occur in order for the baby to survive.

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Definitions:

Frequency Of Sound Waves

refers to the number of complete oscillations or cycles per second of a sound wave, measured in Hertz (Hz), determining the pitch of the sound.

Pitch Discrimination

The ability to distinguish between different tones or musical notes based on their frequency, an important aspect of auditory perception.

Place Theory

A theory in psychology and physiology that suggests the perception of sound depends on where each component frequency produces vibrations along the basilar membrane of the inner ear.

Frequency Theory

The hypothesis that the frequency of a sound wave is directly related to the perception of the sound's pitch, as the auditory nerve fires at the same rate as the sound frequency.