Terms in this set (90)
The heart lies slightly to the left of the midline, between
Where is the heart located in the 3rd and 5th intercostal spaces, anterior to the vertebrae,
the thoracic cavity? and posterior to the sternum and
lungs.
The pericardium encloses the heart, protects it against
What is the function of the
infection, trauma, and friction, and aids in its function by
pericardium?
allowing free movement during pumping.
, The parietal layer, which lines the inside of the fibrous
What are the two layers of the
pericardium, and the visceral layer (or epicardium),
serous pericardium?
which adheres to the outside of the heart.
The pericardial space contains 10-50 ml of clear fluid that acts
What is contained in the
as a lubricant to prevent friction during heart
pericardial space?
contraction and relaxation.
What is a pericardial A pericardial effusion is a condition where the
effusion? pericardial sac fills with excess fluid.
How many chambers does the The heart has four chambers: two atria (right and left) and two
heart have and what ventricles (right and left).
are they?
What is the function of the The right atrium receives deoxygenated blood from
right atrium? the body and pumps it to the lungs.
What is the function of the The left atrium receives oxygenated blood from the
left atrium? lungs and pumps it to the body.
What is the role of the atrial The atrial appendages increase the surface area of each atrium
appendages and are made up of projecting muscles
(auricles)? known as pectinate muscles.
What is the interatrial The interatrial septum is a common wall that divides
septum (IAS)? the right and left atria.
The fossa ovalis is a slight depression in the central portion
What is the fossa ovalis? of the IAS that represents the closed foramen
ovale of fetal circulation.
Where is the right atrium The right atrium is located superiorly, forming the right
located relative to other lateral cardiac border, and is posterior and to
heart structures? the right of the right ventricle.
, What structures are The right coronary and non-coronary cusps of the aortic
located near the medial wall of valve lie against the medial right atrial wall,
the right atrium? forming a bulge called the torus aorticus.
What is the function of the The superior vena cava drains blood from the upper body and
superior vena cava? the head into the right atrium.