Question

99.) The blood that drains from the stomach and the small intestines.

returns to the descending (abdominal) aorta and supplies the lower extremities before returning to the heart

enters the cisterna chyli and then reenters the general circulation system through the left subclavian duct

.travels next to the large intestine and then returns to the heart

travels next to the liver by way of the hepatic portal system and then to the inferior (abdominal) vena cava

travels next to the inferior (abdominal) vena cava and then returns to the heart

100.) How many muscle layers are found in the gastrointestinal (GI) tract and how many are found in the stomach.

There are two layers throughout the GI tract and three in the stomach

There are three layers throughout the entire GI tract including the stomach

There is one layer throughout the GI tract including the stomach

There are five layers in the GI tract and seven in the stomach

There are no muscle layers anywhere in the GI tract

Answer 1

99) D) travels next to the liver by way of the hepatic portal system and then to the inferior (abdominal) vena cava

Explanation: The blood from the stomach and small intestines are drained by the hepatic portal vein which carries these blood to the liver. From liver blood returns back to inferior vena cava. This is important so that blood rich in nutrients absorbed through intestine could undergo first pas metabolism in the liver before entering into the systemic circulation.

100) A) There are two layers throughout the GI tract and three in the stomach

Explanation: Two muscles are found in the GI tract which are circular and longitudinal muscle while stomah has three muscles namely inner circular, middle longituidnal and outer most oblique muscle layer.