DE Anatomy: chapter 16 the respiratory system

Question 1

Which of the following is not part of the upper respiratory system?

a) nose
b) bronchi
c) paranasal sinuses
d) pharynx

Answer 1

b) bronchi

Question 2

the function of the nasal hairs is to

Answer 2

prevent entry of large particles in inspired air

Question 3

paranasal sinuses are found in the

Answer 3

1. maxillary bone
2. frontal bone
3. ethmoid bone and sphenoid

Question 4

the function of the paranasal sinuses is to

Answer 4

1. reduce the weight of the skull

2. act as resonant chambers that affect voice quality

Question 5

which of the following structures does not participate in the production of speech?

a) tongue
b) epiglottis
c) lower folds of the pharynx
d) lips

Answer 5

b) epiglottis

Question 6

The trachea is maintained in an open position by

Answer 6

cartilaginous rings

Question 7

the right and left bronchi arise from the trachea at the

Answer 7

fifth thoracic vertebrae

Question 8

gas exchange takes place in the

Answer 8

alveoli

Question 9

the membrane that lines the thoracic cavity and forms part of the mediastinum is the

Answer 9

parietal pleura

Question 10

the pressure in the thoracic cavity

Answer 10

is less than atmospheric pressure during inspiration

Question 11

muscles other than the diaphragm that normally act to change the size of the thorax are the

Answer 11

intercostals

Question 12

surface tension in the pleural cavity is maintained by

Answer 12

the attraction of water molecules in pleural fluid

Question 13

primary cancers of the lungs usually arise in the

Answer 13

bronchial epithelium

Question 14

the force responsible for normal expiration comes mainly from

Answer 14

elastic recoil of tissues in the lung and thoracic wall

Question 15

the air that enters and leaves the lungs during one quiet, resting respiratory cycle is called the

Answer 15

tidal volume

Question 16

the neurons that control the basic rhythm of breathing are located in the

Answer 16

dorsal respiratory group

Question 17

the respiratory center responds to concentrations of

Answer 17

carbon dioxide

Question 18

the inflation reflexes are activated by

Answer 18

stretch receptors in the bronchioles and alveoli

Question 19

the layers of the basement membrane in the alveoli include

Answer 19

1. a layer of simple squamous epithelium

2. a dense network of capilaries

Question 20

the most abundant gas in room are is

Answer 20

nitrogen

Question 21

oxygen is transported in the blood

Answer 21

1. dissolved in plasma

2. combined with hemoglobin

Question 22

carbon dioxide is carried in the blood

Answer 22

1. dissolved in plasma
2. as part of bicarbonate ion
3. bound to the amino group of hemoglobin

Question 23

true/false. nasal conchae, found on the lateral wall of the nasal cavity, increase the surface area of nasal mucus membrane.

Answer 23

true

Question 24

true/false. moisture is removed from air as it moves through the nasal cavity.

Answer 24

false

Question 25

true/false. the larynx conducts air in and out of the trachea, keeps foreign objects out of the trachea, and houses the vocal cords.

Answer 25

true

Question 26

true/false. the glottis is a flap-like structure that closes the larynx.

Answer 26

false