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Anatomy Written 3 > Lungs > Flashcards

Flashcards in Lungs Deck (32):
1

Trachea

Begins at C6
C shaped cartilages, open posteriorly
Ends at sternal angle and then branches at T4/T5 level

2

Right Primary Bronchus

Wider, shorter, more vertical
2.5cm long
Azygos vein branches over it

3

Left Primary Bronchus

Passes inferolaterally, inferior to the aortic arch, anterior to the esophagus and descending aorta
5cm long

4

Carina

Heavily innervated
Also a lot of lymph nodes here
A keel like ridge located btw the orifices of primary bronchi internally

5

Right Lung - Lobes and Fissures

Upper, Middle, Lower lobes
Oblique and Horizontal Fissures

6

Left Lung - Lobes and Fissures

Upper and Lower lobes
Oblique FIssure
Lingula = Projection of upper lobe

7

Surfaces

Cervical (apex)
Costal (ribs)
Mediastinal
Diaphragmatic (base)

8

Borders

Anterior
Posterior (rounded - sits with vertebrae)
Inferior (rim around diaphragmatic surface)

9

Root of the lung structures

Pulmonary arteries and veins
Bronchus
Bonchial arteries and veins
Nerves
Lymphatics

10

Pulmonary Ligament

Forms by the reflection of parietal pleura as it becomes visceral pleura

11

Hilum of the lung

A depression or pt at the part of the organ where the vessels and nerves enter

12

Respiratory Tree

Primary Bronchus
Secondary Bronchus
Segmental Bronchi
Terminal Bronchioles
Respiratory Bronchioles
Alveolar Ducts
Alveolar Sacs

13

Bronchopulmonary Segments

Surgical unit of lung
Pyramidal in shape, base = peripheral, apex = hilum
Separated by avascular septa
Has own artery, bronchus, and vein which allows for walling off to not harm the entire lung

14

Pleura

Double layered serous membrane with capillary layer of serous fluid
Reduces friction btw pariteal layers

15

Visceral Pleura

Inner layer of membrane
Remains closely attached to the lung and moves with it
Cannot be separated

16

Innervation of Visceral Pleura

Subconscious, visceral, autonomic

17

Parietal pleura

Outer layer of membrane
Stays attached to internal surface of the thoracic wall by endothoracic fascia
Named as it related to surface it is in contact with

18

Parietal Pleura Innervation

Somatic conscious innervation from thoracic wall - intercostal nerves

19

Cervical Surface

Suface emerging through thoracic inlet

20

Costal Surface

Surface in contact with the ribs

21

Mediastinal Surface

Surface in contact with mediastinal structures

22

Diaphragmatic Surface

Surface in contact with the domes of the diaphragm

23

Pleural Cavity

Space btw the two pleural membranes

24

Pleural reflections

A specific pleural surface becomes another pleural surface
These reflections form recesses that are potential spaces within pleural cavity that can be filled with fluid

25

Recesses

Costodiaphragmatic Recess
Costomediastinal Recess

26

Nerve Supply to Lungs

Parietal Plexus
Anterior and posterior plexi - related to carina

27

Lung Innervation - Symp

Vasoconstriction and bronchodilators

28

Lung Innervation - Para

Vasodilators and bronchoconstrictors
Secretomotor and afferents
Cough reflex (located around carina)
Respiratory control (stretch receptors in bronchial tree)
Touch and pain located in respiratory epithelium

29

Nerve Suppl to Parietal Pleura - Specifically

Costal and Cervical PLeura = local intercostal nerves
Mediastinal pleura = phrenic nerve
Diaphragmatic pleura = central part (phrenic) peripheral part (local intercostal nerves)

30

Nerve Supply to Visceral PLeura - Specifically

Insensitive to pain and pressure

31

Superficial Lymphatic Plexus

Lies deep to visceral pleura
Draining lung and visceral pleura
Vessels drain into superior and inferior tracheobronchial lymph nodes

32

Deep Lymphatic Plexus

NONE in alveoli
Pulmonary lymph nodes - along large branches of main bronchi
Bronchopulmonary lymph nodes
Superior and Inferior tracheobronchial lymph nodes
Bronchomediastinal lymph trunks
Left side = thoracic duct
Right side = right lymphatic duct