Thorax Flashcards
What type of joint is the sternoclavicular joint?
Saddle type synovial joint
What structure closes the inferior thoracic aperture?
Abdominal diaphragm
What ribs are the true ribs?
1-7
What ribs are the false ribs?
8-12
What ribs are floating ribs?
11-12
What muscles lie between the ribs and what are they innervated by?
Intercostal muscles innervated by intercostal nerves
What muscle prevents winging of the scapula? What movement is it important for?
Serratus anterior - important in abduction of the arm above 90 degrees
What do the dorsal and ventral roots combine to form?
Spinal nerve
Where do itnercostal nerves run?
In the inferior margin in the costal groove of each rib
What is the PS innervation of the heart? What does it do?
Vagus nerve - decreases HR
Where does Sympathetic innervation of the heart arise from? What does it do?
Sympathetic trunk - increases HR and contractile force
Which vein drains the upper limb?
Subclavian vein
Which vein drains the head and neck?
Internal jugular vein
What is cardiac tamponade?
When fluid accumulates in the pericardial cavity compromising its ability to contract and relax effectively
What venous system drains the deep structures of the back, thoracic wall and abdominal wall?
Azygous venous system