Our teeth are
1. Acrodont and homodont
2. Homodont and polyphyodont
3. Thecodont, diphyodont and heterodont
4. Acrodont, homodont and polyphyodont

Which of the following is connected to the floor of the oral cavity by the frenulum?

What regulates the opening of oesophagus into the stomach?
1. A membranous valve
2. A muscular sphincter
3. A mesodermal septum
4. A cartilaginous flap

The anatomic region of the stomach where the oesophagus opens into is:
1. cardiac
2. pyloric
3. fundus
4. corpus

Series of ridges produced by folding of the wall of an organ such as seen in the stomach are called:
1. taenia coli
2. rugae
3. plicae circulares
4. crypts

The opening of the stomach into the duodenum is guarded by:
1. Cardiac sphincter
2. Sphincter of Oddi
3. Pyloric sphincter
4. Ileocaecal sphincter

Consider the following two statements:
I. Caecum is a small blind sac which hosts some symbiotic micro-organisms.
II. A narrow finger-like tubular projection, the vermiform appendix which is a vestigial
organ, arises from the caecum.

The correct statements are:

Which layer in the wall of the gastrointestinal tract has an inner circular and outer longitudinal layer?