How Is a Fetus Able to Extract O₂ from Its

question 116

Multiple Choice

How is a fetus able to extract O₂ from its mother's blood?

• A)Fetal hemoglobin has a higher affinity for O₂ than maternal hemoglobin.
• B)Fetal hemoglobin has a lower affinity for O₂ than maternal hemoglobin.
• C)The pO₂ of fetal blood is higher than the pO₂ of maternal blood.
• D)Fetal blood has a higher concentration of hemoglobin than maternal blood.
• E)The maternal blood mixes with the fetal blood in the placenta to provide O₂.

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Definitions:

Cervical

Relating to the cervix, the lower, narrow part of the uterus that connects to the vagina, or relating to the cervical vertebrae in the neck.

Sacral

Pertaining to the sacrum, a large, triangular bone at the base of the spine that forms the back wall of the pelvis.

Synovial

Pertaining to or secreting synovia, a lubricating fluid found in the cavities of synovial joints, facilitating smooth movement.

Cartilaginous

Relating to, or made of cartilage, a flexible connective tissue found in various parts of the body.