Anatomy Flashcards
Upper Respiratory Tract
Right and left nasal cavities
Oral Cavity
Naso-, oro- and laryngo- pharynx
larynx
Lower Respiratory Tract
Trachea Left and right main bronchi Lobar bronchi Segmental bronchi Bronchioles Alveoli
At level of C6 vertebra:
Larynx becomes pharynx
Trachea becomes oesophagus
Isthmus of thyroid gland located
Tracheal cartilages 2-4
Chest wall layers superficial –> deep
Skin Superficial Fascia Deep Fascia Skeletal muscle Bone/joints Parietal Pleura
Lung lobe
The area of lung that each of the lobar bronchi supply with air
Right-upper, lower and middle lobes
Left-upper and lower lobes, and lingula
Lobes separated by fissures
Bronchopulmonary segment
The area of lung that each of the segmental bronchi supply with air
Each lung has 10 bronchopulmonary segments
True Ribs
Ribs 1-7
Attach via their costal cartilage to the sternum
False ribs
Ribs 8-10
Attach via their costal cartilage above to the sternum
Floating ribs
Ribs 11&12
No attachment to the sternum
Posterior blood supply to intercostal spaces
Arterial supply- thoracic aorta
Venous drainage- azygous vein
Anterior blood supply to intercostal spaces
Arterial supply -Internal thoracic artery
Venous drainage- Internal thoracic vein
Nerve supply to intercostal spaces
Anterior ramus of spinal nerve (intercostal nerve)
Neurovascular bundle between internal and innermost intercostal muscle layers
Sits in costal groove
Blood supply to the lung itself
Bronchial arteries branching from aorta
Blood supply to the chest wall
Bilateral posterior intercostal arteries
Diaphragm (3)
Forms floor of chest cavity
Forms roof of abdominal cavity
Skeletal muscle with unusual central tendon
Attachments of the muscular part of the diaphragm (3)
The sternum
The lower 6 ribs and costal cartilages
L1-L3 vertebral bodies
Nerve supply to the diaphragm
Phrenic Nerve
C3, 4 & 5 posterior rami
Structures that openings in diaphragm allow to pass through
Thoracic aorta,
Inferior vena cava
Oesophagus and vagus nerves
Where are phrenic nerves found?
In the neck on the anterior surface of scalenus anterior muscle
In the chest (thorax) descending over the lateral aspects of the heart
What do the phrenic nerves supply?
Supplies somatic sensory and sympathetic axons to the diaphragm & fibrous pericardium
Supplies somatic motor axons to the diaphragm
Blood supply to and from the breast
Subclavian artery and vein
Internal thoracic artery and vein
Lymphatic drainage from the breast
Unilateral drainage from lateral quadrants to axillary nodes
Bilateral drainage from medial quadrants to parasternal nodes
Right lung surface markings
Superior vena cava
Azygous vein
Diaphragm
Left lung surface markings
Aorta
Common carotid artery
Heart
Diaphragm