Anatomy Flashcards
What is the name of the tough bag in the middle of the mediastinum?
Fibrous pericardium
Give a pro and a con of the fibrous pericardium
+ helps prevent cardiac overfilling
+ helps prevent cardiac injury
- if it fills with blood the pressure around the heart can prevent contraction
What is the name for blood in the pericardium?
Haemopericardium
What are the names of the two layers of serous pericardium?
Parietal and visceral pericardium
What does visceral mean?
Organ
What are the three layers of heart tissue?
Outside - epicardium (visceral serous)
Middle - myocardium (muscle layer)
Inside - endocardium (inner lining)
What is the name for cardiac cells?
Myocyctes
What are the four parts of the aorta?
- Ascending aorta
- Arch of the aorta
- thoracic aorta
- Abdominal aorta
What are the three branches of the arch of the aorta?
- Brachiocephalic trunk
- Left common carotid artery
- Subclavian artery
What does the brachiocephalic trunk bifurcate into?
The right subclavian artery and the right common carotid artery
What does the right common carotid artery bifurcate into?
The right internal and external carotid arteries
What are anastomoses?
Arteries connect with each other without an intervening capillary network. The provide alternative routes for blood flow to areas distal to an occlusion.
What does infraction mean?
Irreversible cell death due to hypoxia caused by a lack of arterial blood supply.
What nerves supply the diaphragm?
Phrenic nerves
What is the term given to drainage of fluid from the pericardial cavity?
Pericardiocentesis
Name the space used by cardiac surgeons to identify and isolate the great vessels for open heart surgery
Transverse pericardial sinua
What are the heart surfaces
Anterior (sternocostal) surface
Base (posterior) surface
Inferior (diaphragmatic) surface
Where do you palpate the apex beat?
5th left intercostal space in the midclavicular line (mitral area)
Define cardiomegaly
Abnormal enlargement of the heart
Where is the right coronary artery found?
In the coronary groove
Where is the anterior intraventricular artery found?
The anterior interventricular groove
What is the coronary sinus?
A short venous channel in the atrioventricular groove posteriorly.
Recieves deoxygenated blood from most of the cardiac veins and drains into the right atrium.
Name the coronary arteries in the heart
Right coronary artery Left coronary artery Right marginal artery Left marginal artery Circumflex artery Left anterior descending (LAD)/anterior interventricular artery Lateral branch Posterior interventricular artery
What is the septum?
Internal wall that divides the heart into a left and right side
What is the part of the septum between the two atria called?
Interatrial septum
What is the part of the septum between the two ventricles called?
Interventricular septum
What is an atrial septal defect?
A hole in the interatrial septum
What are the 2 most common valvular abnormalities encountered clinically?
Aortic stenosis
Mitral incompetence
Define stenosis
Abnormal narrowing of a passage in the body
What are murmurs associated with?
Abnormal valves
What are stenotic cardiac valves?
Tight valves that do not open properly