Anatomy of Respiratory System

Question 1

respiratory system’s primary function

Answer 1

to bring oxygen into the body, in exchange for carbon dioxide.

Question 2

Respiratory Organs

Answer 2

the nose, nasal cavity, mouth, larynx, pharynx, lungs, and diaphragm

Question 3

upper respiratory tract

Answer 3

nasal cavity, pharynx, and larynx

Question 4

lower respiratory tract

Answer 4

trachea, bronchus, and lungs

Question 5

nasal cavity

Answer 5

opens to the nose

Question 6

nose and nasal cavity

Answer 6

warm and moisten air as a person breathes

Question 7

Respiratory defense mechanism

Answer 7

tiny nose hairs and mucus produced by the epithelial mucosa cells in the nose help prevent particles in the air from entering the lungs

Question 8

pharynx

Answer 8

• Behind the nasal cavity

- Both food and air pass through this long tube.

Question 9

larynx aka voice box

Answer 9

• Just below the pharynx

- channels air to the trachea and pushes food past the epiglottis

Question 10

epiglottis

Answer 10

covers the trachea during swallowing to prevent food from entering the lungs

Question 11

trachea aka wind pipe

Answer 11

when air reaches trachea trachea it travels down a long tube that branches into bronchi

Question 12

bronchi

Answer 12

enter the lungs

Question 13

Bronchiles

Answer 13

bronchi branch into bronchioles before reaching aveoli

Question 14

Aveoli

Answer 14

tiny air sacs

Gas exchange occurs in the alveolar region

Question 15

Diaphragm

Answer 15

muscle that plays a large role in breathing

found at the base of the lungs and spreads across the bottom of the rib cage, forming the chest cavity

Question 16

Lungs quick facts

Answer 16

two lungs that vary in size and weight

right lung-larger and heavier,- three lobes

left lung has two lobes

Question 17

Pulmonary surfactant

Answer 17

consists of chemical compounds that lines the alveolar surfaces of the lungs

They are lipopolysaccharides which have both a hydrophobic and hydrophilic layer to help keep the lungs inflated or prevent them from collapsing.

Question 18

pleura

Answer 18

outside of the lungs are serous membranes that cover each lung

They form a two-layered membrane that cushions the lungs while reducing friction between the lungs and chest cavity or rib cage