The First Reflex Actions of the Fetus, Which Are Opening

question 6

Multiple Choice

The first reflex actions of the fetus, which are opening and closing the mouth, swallowing, and clenching its fist, are first felt during which period?

• A) Zygotic period
• B) Neonatal period
• C) Embryonic period
• D) Early fetal period
• E) Late fetal period

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Definitions:

Phylogeny

The study of the evolutionary history and relationships among individuals or groups of organisms.

Veins

Blood vessels that carry deoxygenated blood towards the heart, except for the pulmonary and umbilical veins.

Coelacanths

Coelacanths are rare and ancient fish known for their lobed fins, which were once thought to be extinct until living specimens were discovered in 1938.

Lungfishes

A group of freshwater fish known for their ability to breathe air using lungs in addition to gills, found in Africa, South America, and Australia.