1located between the two lungs within the thoracic cavity, apex towards the left side and pumps blood across the body
heart
2composed of arteries and veins
blood vessels
3small veins are called
venules
4small arteries are called
arterioles
5covering of the heart, helps pump blood ng maayos, a thin walled structure na parang supot
pericardium
6most superficial layer of the pericardium
fibrous pericardium
7hold the heart in place, also protects it from infections, lubrication and has two parts
serous pericardium
8two parts of serous pericardium
parietal and visceral pericardium
9outermost layer of the wall of the heart
epicardium
10middle, nagkakaroon ng contraction ang heart
myocardium
11inner layer of the wall of the heart, prevents blood clotting and ensures smooth flow
endocardium
12looks like meaty ridges, rounded columns, helps heart to have good ventricles and will project from the inner surface ng heart from right to left
trabecular carneae
13presence of cell shape
simple squamous epithelium
14aka myocardium, striated, intercalated disks, contraction is also possible due to calcium ions and atp
cardiac muscles
15most important proteins found in our muscles
actin and myosin
16major veins found in the heart, carries deoxygenated blood from the upper body to the heart
superior vena cava
17largest artery in the body, responsible for transporting oxygenated blood from the heart to the rest of the body, maintain and regulates blood pressure and responsible also for the supply of oxygen
arch of aorta
18carry oxygenated blood from the lungs to the heart
right pulmonary veins
19carries deoxygenated blood from the heart to the left lung
left pulmonary artery
20carry oxygenated blood
left pulmonary veins
21carrying deoxygenated blood from the heart to the lungs
pulmonary trunk
22first chamber to receive oxygenpoor blood from the body, and ipa-pump to the right ventricle
right atrium
23receive oxygen rich blood from the lungs and pumps it to the left ventricle papuntang aorta
left atrium
24also known as the receiving chamber
right atrium
25also known as the pumping chamber
right ventricle
26pumps oxygen poor blood to the lungs
right ventricle
27main chamber of the heart, makapal and pinakamuscle ng heart
left ventricle
28upper portion and holding chambers
atria
29small, thin walled, contract minimally to push blood into ventricles
atria
30lower portion and pumping chambers, thick, strong walled, contract forcefully to propel blood out of heart
ventricles