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Which of the following is not an accessory organ of digestion?

A.

Salivary glands

B.

Liver

C.

Pancreas

D.

Spleen

Answer and Explanation

The Correct Answer is D

A. Salivary glands are accessory organs of digestion as they secrete saliva containing enzymes to start digestion.

B. Liver is an accessory organ involved in digestion, particularly in bile production and processing nutrients.

C. Pancreas is an accessory organ that secretes digestive enzymes into the small intestine.

D. Spleen is not involved in digestion; it is primarily involved in immune function and blood filtration.


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Related Questions

Correct Answer is C

Explanation

A. While in a secondary follicle: The ovum completes meiosis only after fertilization, not while in a secondary follicle.

B. While in a primary follicle: The ovum is arrested in prophase I of meiosis while in a primary follicle. Meiosis is not completed until fertilization.

C. During fertilization: The ovum completes meiosis II during fertilization, which is when the second meiotic division is completed.

D. During implantation: Meiosis is not completed during implantation. It is completed at fertilization.

Correct Answer is C

Explanation

A. The neural tube and yolk sac have formed: By 8 weeks, the neural tube and yolk sac have formed, but this is not the criterion for defining a fetus.

B. The amniotic cavity has formed: The formation of the amniotic cavity occurs earlier in development and is not the defining feature of a fetus.

C. All of the organ systems are present: By the end of 8 weeks, the basic structures of all major organ systems are present, which is why the embryo is referred to as a fetus from this point onwards.

D. The mesoderm has formed: The formation of the mesoderm occurs earlier and is not the defining factor for fetal status. By 8 weeks, more significant development, including the presence of organ systems, has occurred.

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