Flashcards in *Anatomy 3 Deck (43)
Where is the anterior mediastinum located?
Between the sternum and the fibrous pericardium?
What is located within the anterior mediastinum of children?
What is the purpose of this?
What happens after puberty?
A gland/ lymphoid organ that produces T Lymphocytes in childhood
It involutes and becomes replaced by adipose tissue
What clinical conditions can affect the thymus gland? (3)
What is located within the middle mediastinum?
Parts of the great vessels that connect with the heart
Where does the azygous vein drain blood to?
From the intercostal veins to the SVC
What nerves can be seen on the posterior mediastinum?
Sympathetic chains/ trunks
What level is the dividing point between the inferior and superior mediastinum?
What part of the mediastinum is the trachea located in?
The superior mediastinum
What part of the aorta lies in the posterior mediastinum?
The thoracic aorta
How do the vagal trunks pass through the diaphragm?
With the oesophagus onto the stomach
On what side of the vertebrae does the azygous vein run?
Right anterior surface
Where does the azygous vein arch to drain into the lung root?
Superior to the lung root
What does the right lymphatic duct drain?
into the right venous angle
Where does the thoracic duct drain?
Into the left venous angle
What lymph nodes surround the main bronchus at the lung root?
The bronchopulmonary lymph nodes (hilar lymph nodes)
What lymph nodes surround the bifurcation of the trachea?
The trachea-bronchial lymph nodes
What pulmonary lymph nodes does the lymph drain first to?
The broncho-pulmonary lymph nodes and then to the trachea-bronchial lymph nodes
Lymph will then drain bac tot he right lymphatic duct or thoracic duct
What is one break of the rule regarding drainage of lymph from the lungs?
in some patients the lymph from the left inferior lobe drains into the right lymphatic duct
What hiatus is anterior in the diaphragm?
Aortic hiatus is posterior
What is the name of the swollen start of thoracic duct in the abdomen?
How does the vagus nerve pass through the diaphragm?
Along with the IVC to supply the diaphragm from the inferior part
How does the vagus and phrenic nerves sit in relation to the root of the lung?
Vagus = posterior
Phrenic = anterior
Where do the recurrent laryngeal branches branch from?
The vagus nerves
What do the recurrent laryngeal nerves supply?
All the intrinsic muscles of the pharynx except from the cricothyroid muscles
What is the ligemanetum arteriosum a remnant of?
The ductus arteriosus
Where does the left recurrent laryngeal branch hook under?
The ligamentum arteriosum (under the arch of the aorta)
What are the structures of the superior mediastinum from anterior to posterior and then from lateral to medial?
Braciocephalic veins and SVC
Arch of aorta and the origin of its 3 branches
Recurrent laryngeal nerves
What are the central veins defined as?
Those large veins close enough to the heart such that the pressure within them is said to approximately reflect the pressure within the right atrium (depending on posture)
What are the central veins?
Internal jugular veins
superior vena cava
Inferior vena cava