Heart and Great vessels
I. circulatory system
a. a series of channels and a pump that move fluids around the body
b. delivering o2 and nutrients to active tissues
c. removing co2 and other wastes from active tissues
II. anatomic components
a. heart
b. arteries carry waste from heart
c. veins carry blood back to heart
d. lymphatic drain interstitial fluids and filter it and returns to heart
III. two part system
a. systemic – body in general arteries carry blood out veins return byway of great vessels to arteries to arterioles then cap bed. This is were o2 exchange takes place
b. pulmonary lungs great vessels deox to arteries then arterioles and capillarty bed were oxation takes place and returns back to heart.
IV. Oxgened
a. Aorta out – systemic system
b. Pulmonary veins – pulmonary
V. Deox
a. Venacava in to heart systemic
b. Pulmonary trunk
VI. Heart in mediastinum space between 2 pleural cavities
VII. Pericardial sac
a. Three parts
i. Fibrous pericardium – ct attached to diaphragm below and great vessels above
ii. Serous pericardium – inter layer visceral layer outer layer parietal layer
VIII. 3 layers of heart
a. Epicardium = visceral layer of serous pericardium
b. Myocardium = cardiac muscle and “neurons” of conducting system
c. Endocardium = s. sq. et continuous with lining of entire circulatory system
IX. 4 chambers
a. Atria thin myocardium superiorly located receive blood left of lungs right from body and heart itself
b. Ventricles thick myocardium inferiorly located deliver blood
c. Left to body (thicker wall)
d. Right to lungs (thinner)
LAB NOTES
External anatomy
Be able to find all listed here:
Right atrium
Right ventricle
Left atrium
Left ventricle
Coronary sulcus
Coronary sinus
Anterior interventricular sulcus
Posterior interventricular sulcus
Base
Apex
Superior vena cava
Infer vena cava
Pulmonary trunk
Pulmonary arteries
Pulmonary veins
Aorta
Internal anatomy
Right atrium
Superior and inferior vena cavae
Opening of coronary sinus
Interatrial septum
Fossa ovalis
Right ventricle
Right atrioventricular (tricuspid) valve
Chordae tendinae
Papillary muscles
Interventricular septum
Pulmonary semilunar valve
Pulmonary trunk
Left atrium left and rfight pulmonary veins
Left ventricle
Left atrioventricular (mitral) valve
Aorta
Left coronary artery
Right coronary artery
What is the path of blood flow through the heart?
Blood enters the heart byway of the right atrium to the right ventricle out to the lungs and returns byway of left atrium and then left ventricle
Which chambers contain oxygenated, which deoxygenated blood?
The left atrium and ventricle are oxygenated were as the right atrium and ventricle are deoxygenated.
Why is the wall of the left ventricle thicker than that of the right? The left side is under greater pressure as it is forcing blood out to the body.
II. great vessels
Arteries
Pulmonary circulation
Pulmonary trunk
Right pulmonary artery
Left pulmonary artery
Systemic Circulation
Aorta
Aortic arch
Thoracic aorta
Brachiocephalic (innominate) artery
Right subclavian artery
Right common carotid artery
Left common carotid artery
Left subclavian artery
Veins
Pulmonary Circulation
Pulmonary veins
Systemic Circulation
Superior vena cava
Inferior vena cava
Azygous vein
Intercostals veins
Brachiocephalic