Heart Rate in a Fetus Is About ________, in a Newborn

question 33

Multiple Choice

Heart rate in a fetus is about ________, in a newborn about ________, and in an adult about ________.

• A)145; 140; 70
• B)70; 140; 145
• C)100; 100; 100
• D)200; 160; 120

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Definitions:

Umbilical Cord

A flexible helical structure containing blood vessels that connects the developing organism to the placenta.

Placenta

An organ made up of tissue from both the mother and the fetus that serves as a barrier and filter between their bloodstreams.

Mesoderm

Cells of the inner cell mass of the embryo that give rise to the muscles, the bones, the circulatory system, and the inner layers of the skin.

Inner Cell Mass

A group of cells inside the early embryo that will eventually give rise to the organism's body.