Question

WS 3
Respiratory System
1. Fill in the blanks.
a.
Nostrils are present in
and
b. Pharynx is present between the
which helps us
c. Diaphragm is a
d. Alveoli is a
like structure.
e. Lungs are located on both sides of the
When the diaphragm contracts, it
f.
lungs
lungs down and air
g. The trachea is divided into 2 tubes called
h. When the diaphragm expands, it
lungs up and air
lungs
i.
The trachea is also known as the
1. The nasal cavity has
that moistens the air going inside
k. The cilia trap
present in the air.​

Answer 1

Answer:

1 nose

2 The pharynx is a musculomembranous tube, some 12 to 15 cm in length and with openings into the nasal and oral cavities. It communicates laterally with the middle ear, and contributes to both the respiratory and the digestive tracts.

3

Explanation: