Question

Fill in the blanks:
(a) The length of the whole digestive tract is________
metres.
(b) The stomach secretes_________
which is used to break down food.
(c) When hungry, the small intestine makes gurgling and rumbling sound
called_________
(d) The total length of blood vessels is nearly_________
kilometres.
(e) RBC acts as a source of________
to different parts of the body.​

Answer 1

Answer:

Explanation:

A. About 30 feets in adult

B. gastric juice

C. bowel sound, peristaltic sound, abdominal sound, bubble gut or borborygmus.

D. About 100,000 miles long in an adult.

E. Oxygen