Question

1 point
9. Trachea do not collapse
when there is not much air
because they are *
O thick and muscular
O having cartilaginous rings
O
have valves
O supported by larynx​

Answer 1

Answer:

b is correct

Explanation:

this is becz there is present c shaped cartilaginous rings

plz mark as brainliest

Answer 2

Answer:

b)having cartilaginous rings

Explanation:

Trachea has a very solid built. It has cartilaginous rings of C shaped, also called tracheal rings around the trachea for the support. They are incomplete circles, allowing slight collapse or inflation. ... This is why, trachea doesn't collapse during forceful inhalation.