Question 43

The placenta provides nutrients and oxygen essential for embryo growth and development.

The placenta plays a crucial role in supplying necessary nutrients and oxygen to the developing embryo, facilitating its growth and overall development throughout the gestation period.

A) Digestion of nutrients

While the placenta is involved in the transfer of nutrients from the mother to the embryo, it does not perform digestion. Instead, it absorbs nutrients from the maternal bloodstream and delivers them directly to the developing fetus, making this option incorrect.

B) Perception of stimuli

The placenta does not have any sensory functions related to the perception of external stimuli. Its primary role is to support the embryo's nutritional and respiratory needs rather than being involved in sensory processing, thus rendering this option incorrect.

C) Transmission of electrical signals

The placenta is not responsible for transmitting electrical signals. Electrical signaling is primarily associated with neural tissue and not with the placental structure, which focuses on nutrient and gas exchange, making this option incorrect.

D) Providing of nutrients and oxygen

The placenta is vital for providing nutrients and oxygen to the embryo, ensuring that it has the essential substances needed for growth and development. This function is critical for sustaining the embryo's health during pregnancy, confirming this option as correct.

Conclusion

The placenta's primary function of providing nutrients and oxygen is essential for the embryo's growth and development, distinguishing it from the other options that suggest roles not performed by the placenta. All other options fail to accurately describe the placenta's critical functions, thereby reinforcing why option D is definitively the correct answer.