Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Physio Fall 22 > L13- Respiratory > Flashcards

L13- Respiratory Flashcards

1
Q

Function of the respiratory system

A

Gas exchange (o2, co2)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Why do we need o2?

A

O2 = final electron acceptor in electron transport

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Why must we remove co2?

A

Co2 build up in tissues = decrease ph (more acidic) ➡️ denature proteins

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Goal of cell respiration

A

Produce ATP using energy from Chemical bonds in glucose

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

3 mechanisms of the respiratory system

A
  1. Ventilation
  2. Gas exchange
  3. Gas transport
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Ventilation occurs

A

Between air and alveolus (lungs)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Where are the two locations gas exchange occurs?

A
  1. The lungs & blood
  2. Blood & tissue cells
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Gas transport occurs

A

In the blood

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What are the 2 regions of the respiratory system?

A
  1. Conducting zone - Airways
  2. Respiratory zone - alveoli
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Airways are _____ and lungs are ______

A

Tubes, Alveoli

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Upper respiratory tract

A

Nasal cavity
Pharynx
Larynx

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Lower respiratory tract

A

Trachea, bronchi, bronchioles, alveoli

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Naval cavity

A

Filters, warms, and moistens the air

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Pharynx (throat)

A

Passageway for air, food, and liquids

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Larynx (voice box)

A

Vocalization

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Trachea ( windpipe)

A

Brings air in - main airway

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Bronchi

A

Branching airways

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Bronchioles

A

Smaller airways

19
Q

Alveoli

A

Air sacs for gas exchange

20
Q

________ regulates the diameter of bronchioles

A

Smooth muscle

21
Q

The walls of alveoli are surrounded by __________ for gas exchange

A

Capillaries

22
Q

Diaphragm

A

Primary muscle of respiration
- enlarges the thorax

23
Q

What causes the lungs to stick to the thoracic wall and diaphragm?

A

Serous fluid

24
Q

Lungs follow movement of thorax therefore..

A

Thorax expands = lungs expand

Thorax contracts = lungs recoil

25
Ventilation is caused by
Changing pressure in the lungs
26
Inhalation
Diaphragm contracts - active at rest
27
Exhalation
Diaphragm relaxed - passive at rest
28
Mechanism of ventilation ( at rest)
- Diaphragm relaxed Lung pressure = atmospheric pressure ➡️ no air flow.
29
What causes pressure difference in the lungs?
The diagram
30
Mechanism of ventilation during inspiration
- diaphragm contracts/ flattens ➡️ increasing volume & decreasing pressure in lungs Lung pressure < atmospheric pressure
31
Mechanism of ventilation during expiration
- diaphragm relaxes ➡️ decrease volume & increase pressure Lung pressure > atmospheric pressure
32
Successful ventilation requires …. (5 thing)
1. Low airway resistance 2. Ability to inflate lungs 3. Stretchy lungs 4. Surfactant 5. Pacemaker neurons in respiratory center
33
Low airway resistance
- smooth muscle allows change of airway diameter
34
Ability to inflate lungs
Serous fluid in pleural cavity holds lungs to bodies wall
35
Stretchy lungs caused by
Healthy elastic tissue
36
Surfactant
Disrupts surface tension preventing alveolar collapse ( disrupting H bonds)
37
Pacemaker neurons in respiratory center
- in pons Communicating w/ diaphragm 24/7 causing muscle to contract rhythmically all the time
38
Dalton’s law
Total pressure = sum of all partial pressures of all gases
39
What gases are found in the atmosphere
O2 + CO2 + N + H2O
40
What gas is mostly found in the atmosphere
Nitrogen
41
What are the two locations gas exchange occurs
Alveoli (lungs) - tissue ce S
42
Ventilation occurs at bronchioles
Low pco2 = smooth muscle constricts High poc2 = smooth muscle dilates ( relax)
43
Perfusion occurs at pulmonary arteriole
- high tissue pO2 = dilated - low tissue pO2 = constricted
44
Cell respiration equation
6o2 + C6H12O6 ➡️ 6Co2 + 6H2O

Physio Fall 22 (24 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions