Lung And Pleura Flashcards

1
Q
A
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2
Q

What are the two types of pleura?

A

Visceral and Parietal

Visceral pleura tightly covers the lung surface while parietal pleura lines the thoracic walls.

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3
Q

What is the function of the pleural cavity?

A

Contains serous pleural fluid that lubricates pleural surfaces

This allows the layers of pleura to slide smoothly over each other during respiration.

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4
Q

What are the parts of the parietal pleura?

A
  • Costal
  • Mediastinal
  • Diaphragmatic
  • Cervical

Each part has specific locations and functions related to the thoracic cavity.

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5
Q

What are the main components of the thoracic cavity?

A
  • Heart
  • Thoracic part of great vessels
  • Thoracic part of the trachea
  • Esophagus
  • Thymus
  • Lymph nodes
  • Pleura
  • Pleural cavity

These structures are essential for various functions including circulation and respiration.

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6
Q

What is the significance of the hilum of the lung?

A

It is where the visceral and parietal pleura are continuous and where structures enter and exit the lung

Structures include bronchi, pulmonary arteries, and veins.

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7
Q

True or False: The right main bronchus is longer and more vertical than the left main bronchus.

A

False

The right main bronchus is shorter, wider, and more vertical than the left.

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8
Q

Fill in the blank: The _______ is a potential pleural space located at the border of the mediastinal pleura and the costal pleura.

A

Costomediastinal recess

This recess is important in the context of pleural effusion.

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9
Q

What are bronchopulmonary segments?

A

Pyramidal-shaped segments of the lung, each with its own tertiary bronchus, pulmonary artery, and vein

There are 10 segments in the right lung and 8 to 10 in the left lung.

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10
Q

What is the role of bronchial arteries?

A

Supply blood for nutrition of lung structures and visceral pleura

They arise from the thoracic aorta and support the lung’s structural integrity.

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11
Q

What does the term ‘costodiaphragmatic recess’ refer to?

A

A potential pleural space that allows for lung expansion during respiration

It is located between the diaphragm and the lower margin of the pleura.

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12
Q

How many lobes does the left lung have?

A

Two lobes

The left lung consists of a superior and inferior lobe, separated by an oblique fissure.

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13
Q

What is the function of the tracheobronchial tree?

A

Conducts air from the larynx to the lungs

The structure is supported by C-shaped rings of hyaline cartilage.

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14
Q

What are the three surfaces of the lung?

A
  • Costal
  • Mediastinal
  • Diaphragmatic

Each surface interacts with different anatomical structures and has specific characteristics.

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15
Q

What is the primary function of the lungs?

A

Oxygenate the blood by bringing inspired air into close relation with venous blood in pulmonary capillaries

This is vital for respiration and maintaining oxygen levels in the body.

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16
Q

What are the visceral pleurae?

A

The membranes that cover the lungs

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17
Q

What regions do the peripheral regions of the lung refer to?

A

The outer parts of the lung

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18
Q

Where does the right bronchial vein drain?

A

Into the azygous vein

19
Q

Where does the left bronchial vein drain?

A

Into the accessory hemiazygous vein or left superior intercostal vein

20
Q

What is the primary function of the lymphatic drainage system?

A

To drain fluid (lymph) that has leaked from blood vessels and return it to the bloodstream

21
Q

What does the lymphatic drainage system eliminate from damaged tissue?

A

Cell debris through filtering and phagocytosis by lymph nodes

22
Q

How does the lymphatic system relate to cancer?

A

It provides a pathway for cancer cells to metastasize

23
Q

What does the lymphatic drainage collect from the lungs?

A

Carbon, dust particles, and pollutants not filtered by the epithelium

24
Q

Where does lymph from deep and superficial lymphatic plexus drain?

A

Into superior and inferior tracheobronchial lymph nodes

25
Q

What do the right and left bronchomediastinal lymph trunks drain into?

A

Right merges with other ducts to form right lymphatic duct; left terminates in thoracic duct

26
Q

Which nerves supply the parietal pleura?

A

Intercostal and phrenic nerves

27
Q

What is the source of the nerves for the lungs and visceral pleurae?

A

Pulmonary plexuses

28
Q

What type of fibers are conveyed to the pulmonary plexuses from CNX?

A

Parasympathetic presynaptic fibers

29
Q

What is the effect of parasympathetic fibers on the bronchial tree?

A

Bronchoconstrictor, vasodilator, and secretomotor

30
Q

Where are the cell bodies of sympathetic fibers located?

A

In the paravertebral sympathetic ganglia of the sympathetic trunk

31
Q

What is the effect of sympathetic fibers on the bronchial muscle?

A

Bronchodilator and vasoconstrictor

32
Q

What condition is characterized by air in the pleural cavity?

A

Pneumothorax

33
Q

What can cause atelectasis?

A

Free air in the pleural space causing lung deflation

34
Q

What is tension pneumothorax?

A

A severe form of pneumothorax where pressure builds up in the pleural space

35
Q

What is pneumonia?

A

Infection of the alveoli of the lung

36
Q

What are the common causes of pneumonia?

A

Viruses, bacteria, and sometimes fungi

37
Q

What is asthma characterized by?

A

Bronchoconstriction, wheezing, coughing, shortness of breath, and excess pulmonary mucus

38
Q

How does a normal lung appear on an X-ray?

A

As black space due to its spongy structure

39
Q

How does pneumonia affect lung appearance on X-ray?

A

It appears white or opaque due to fluid and cell accumulation

40
Q

What does COPD stand for?

A

Chronic Obstructive Pulmonary Disease

41
Q

What is emphysema?

A

Irreversible loss of pulmonary gas exchange area due to inflammation

42
Q

What results from the combined effect of emphysema?

A

Increase in diameter of alveoli and decrease in total number of alveoli

43
Q

What is empyema?

A

Accumulation of pus in the pleural cavity

44
Q

What is the general arrangement of the lung root when sectioned?

A

Pulmonary artery is superiormost, superior and inferior veins are anteriormost and inferiormost, main bronchus is in the middle