The figure shows a human embryo 31 days after conception.Which of the following structures is part of the placenta? 
Definitions:
T₄
Also known as thyroxine, it's a hormone produced by the thyroid gland that plays a crucial role in metabolism and energy regulation.
Correct Meaning
The accurate interpretation or significance of a word, phrase, sentence, or text.
Chemical Transmitter
Substances released by neurons to transmit signals across a synapse to another nerve cell, often referred to as neurotransmitters.
Bloodstream
The blood circulating through the body of a person or animal, carrying oxygen, nutrients, and waste products.
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