Question

question 16
1 pts
all of the following are classified as accessory organs of the digestive system except the:
tongue.
mouth.
liver.
pancreas.
question 17
1 pts
the hard palate consists of portions of:
four bones: three maxillae and one palatine.
two bones: one maxillae and one palatine.
four bones: two maxillae and two palatines.
two bones: two palatines.
question 18
1 pts
the fan - shaped projection of peritoneum that connects the small intestine to the posterior abdominal wall is the:
visceral peritoneum.
greater omentum.
lesser omentum.
mesentery.

Explanation:

Question 16

Accessory organs of the digestive system aid digestion but aren't part of the alimentary canal. Tongue, liver, and pancreas are accessory. The mouth is part of the alimentary canal (where digestion starts), so it's not an accessory organ.

The hard palate is formed by the palatine processes of the maxillae (two maxillae) and the horizontal plates of the palatine bones (two palatines), so it consists of four bones: two maxillae and two palatines.

The mesentery is a fan - shaped fold of peritoneum that attaches the small intestine to the posterior abdominal wall, providing support and a pathway for blood vessels, nerves, etc. The visceral peritoneum covers organs, the greater omentum hangs from the stomach, and the lesser omentum connects the stomach to the liver.

Answer:

B. mouth.

Question 17