Author Question: The two main branches of the trachea are the: A) bronchioles. B) alveoli. C) cilia. D) ... (Read 34 times)

rlane42 · **on:** Jun 26, 2018

The two main branches of the trachea are the:

A) bronchioles.
B) alveoli.
C) cilia.
D) bronchi.

Question 2

Smooth muscle is also called:

A) visceral muscle.
B) striated muscle.
C) voluntary muscle.
D) cardiac muscle.

frre432 · **Reply #1 on:** Jun 26, 2018

Answer to Question 1

D
Explanation: A) The bronchioles are small branches of the bronchi.
B) The alveoli are the air sacs in the lungs.
C) Cilia are hairlike structures in the trachea and bronchi.
D) Correct.

Answer to Question 2

A
Explanation: A) Correct.
B) Striated muscle is skeletal or cardiac muscle.
C) Voluntary muscle is not smooth; it is striated, skeletal muscle.
D) Cardiac muscle is striated, not smooth.