Lab 12: Respiratory system Flashcards Preview

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Flashcards in Lab 12: Respiratory system Deck (25):
1

These are the openings connecting the nasal cavity to the outside. Air passes through these openings during respiration.

External nares

2

The cavity within the nose and above the palate. It is divided by the nasal septum into two passageways. The cavity contains the olfactory epithelium and warms, moistens, and filters the air passing through the nose.

Nasal cavity

3

These are the cavities located within the skull which lighten the skull and serve as resonating chambers for speech.

Paranasal sinuses

4

These are the openings at the rear of the nasal cavity which open into the nasopharynx. Air passes through these openings into the nasopharynx.

Internal nares

5

This passage way is known as the throat. It is composed of three regions.

Pharynx

6

This is the portion of the pharynx superior to the soft palate. The openings of the eustachian or auditory tubes are located in this region.

Nasopharynx

7

This is the portion of the pharynx between the soft palate and the epiglottis. It is the common passageway for the digestive and respiratory systems.

Oropharynx

8

This portion of the pharynx lies between the hyoid bone and the larynx.

Laryngopharynx

9

Aka the voice box, it connects the pharynx to the trachea. Also contains the paired vocal chords used for speech.

Larynx

10

This is a cartilage reinforced tube that is commonly called the windpipe. Begins at larynx and ends as it splits into the right and left bronchi in the thorax. It is the passageway for air.

Trachea

11

The two large respiratory organs located in the thoracic cavity.

Lungs

12

These are commonly called the root of the lung. They are located where the bronchi and blood vessels enter or leave the lung. Otherwise the lungs float freely in the thoracic cavity.

Hilus

13

These are the two tubes which split from the base of the trachea and enter the right and left lungs.

Primary bronchi

14

The primary bronchi split into these smaller tubes within the lungs.

Secondary bronchi

15

The secondary bronchi split into these smaller tubes within the lungs.

Tertiary bronchi

16

The tertiary bronchi split into these smaller tubes within the lungs. They eventually lead to the alveoli.

Bronchioles

17

These are small sacs lined with simple squamous epithelium. They form the functional unit of the lungs where gas exchange occurs.

Alveoli

18

This is a large flat skeletal muscle which separates the thoracic and abdominal cavities. It acts to change air pressure within the lungs during inhalation and exhalation.

Diaphragm

19

Boyle's law states:

The pressure of a gas in a closed container is negatively related to the container's volume.

20

The volume of a single inhalation during normal breathing

Tidal volume

21

The volume of air inhaled each minute

Minute volume respiration

22

How to calculate minute reserve volume?

Multiply the number of breaths per minute times the tidal volume.

23

How to calculate inspiratory reserve volume?

Subtract the tidal volume from the inspiratory capacity.

24

Respiratory volume that calculates normal breathing

Tidal volume

25

Respiratory volume that calculates the remaining air in lungs after a normal breath

Expiratory reserve volume