Respiratory System

Question 1

What are the structures of the URT?

Answer 1

Nostrils, nasal passages, pharynx, epiglottis, larynx, trachea.

Question 2

What is the main function of the respiratory system?

Answer 2

Exchange CO2 within the body for O2.

Question 3

What do the nasal passages do?

Answer 3

Supply the lungs with relatively pure, warm, humidified air.

Question 4

Do the pharynx and larynx work together?

Answer 4

Yes.

Question 5

What does the epiglottis look like?

Answer 5

A leaf shaped piece of cartilage.

Question 6

What are the structures of the LRT?

Answer 6

Bronchi, lungs, thorax, diaphragm.

Question 7

What is the respiration cycle?

Answer 7

Inspiration + expiration + rest

Question 8

What is another name for the thorax?

Answer 8

Chest.

Question 9

What is inspiration?

Answer 9

The act of drawing air into the lungs.

Question 10

What is expiration?

Answer 10

The act of exhaling or expelling air.

Question 11

Where is the site of gas exchange?

Answer 11

At the alveoli.

Question 12

What is the diaphragm?

Answer 12

A thin, dome shaped skeletal muscle sheet that contracts and flattens to enlarge the volume of the thorax and aid in respiration.

Question 13

What is the function of the epiglottis?

Answer 13

Covering the opening of the larynx during swallowing.

Question 14

What are the secondary functions of the respiratory system?

Answer 14

Vocalization, and thermoregulation.

Question 15

What is the pharynx?

Answer 15

Also known as the throat, it is a common passageway for respiratory and digestive systems. It communicates with the nasal passages, mouth and larynx.

Question 16

What is the larynx?

Answer 16

Also known as the voice box, it is a short, irregular tube connecting the pharynx with the trachea. It prevents swallowing from interfering with breathing and vice-versa.

Question 17

What is the trachea?

Answer 17

Also known as the windpipe, it is a short, wide tube that extends from the larynx to the thorax. It divides into two bronchi that then enter the lungs.

Question 18

What is the tracheal cartilage ring?

Answer 18

They are c-shaped rings of hyaline cartilage along the trachea, the gap between each ring is bridged by smooth muscle that allows the trachea to expand.

Question 19

What is an alveoli?

Answer 19

A tiny, thin-walled sac of simple squamous epithelium, surrounded by networks of capillaries that bring blood to the alveoli where CO2 is exchanged for O2.

Question 20

Do dogs and cats sweat?

Answer 20

Not really, only through their paw pads and noses.

Question 21

How do dogs and cats cool down their bodies?

Answer 21

By breathing hard (panting), exchanging warm air from the body for the cooler air outside and evaporating moisture within the respiratory system.