With Regard to the Development of the Respiratory System,maternity Nurses

question 34

Multiple Choice

With regard to the development of the respiratory system,maternity nurses should be understand that:

• A)The respiratory system does not begin developing until after the embryonic stage.
• B)The infant's lungs are considered mature when the lecithin/sphingomyelin (L/S) ratio is 1:1, at about 32 weeks.
• C)Maternal hypertension can reduce maternal-placental blood flow, accelerating lung maturity.
• D)Fetal respiratory movements are not visible on ultrasound scans until at least 16 weeks.

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Definitions:

Anterior Commissure

A bundle of nerve fibers connecting the two hemispheres of the brain, playing a role in pain sensation and other functions.

Neural Relay Center

A part of the nervous system responsible for processing and transmitting information from one area to another.

Pons

A part of the brain located in the brainstem, serving as a major communication and coordination center between the two hemispheres of the brain.

Regulating Homeostatic

The process of maintaining internal balance and stability in biological systems despite changes in the external environment.