Flashcards in The Heart Deck (100)
what is the sequence in the pulmonary circuit?
heart-> pulmonary arteries -> pulmonary capillaries -> pulmonary veins -> heart
What is special about the pulmonary arteries?
Arteries usually consist of oxygenated blood, however these arteries consists of deoxygenated blood
What is the sequence in the systemic circuit?
heart -> systemic arteries -> systemic capillaries -> systemic veins -> heart
Where is the apex in terms of the 4 chambers?
The apex is located in the let ventricle
What are the 2 parts of the pericardium and their relative location?
the fibrous pericardium and is superficial to the serous pericardium which is deep
What is the function of the fibrous pericardium?
protection, anchoring the heart to surrounding structures and prevents overfilling with blood
What is the fibrous skeleton of the heart?
dense connective tissue network that anchors cardiac muscle fibers, supports vessels and valves, and limits spread of action potentials
What separates the 2 atria?
What separates the 2 ventricles?
Which surface marker separates the atria from the ventricles both anteriorly and posteriorly?
Which 2 surface markings divide the 2 ventricles?
the anterior and posterior interventricular sulcus
What is the purpose of the atria?
they are the receiving chambers
How much activity do the atria contribute the pumping blood?
How many auricles are there and their purpose?
2: right and left
The purpose of the auricles are to aid the atria by slightly increasing the volume
What muscles are located in the wall of the right atrium and auricles?
Which marking is present in the fetus, but once born becomes a bone marking?
What is the function of the fossa ovalis n a fetus?
to pump blood between the right and left atria
What pumps blood into the right atrium? From where?
Superior vena cava: from above diaphragm
Inferior vena cava: from below diaphragm
Coronary sinus: from myocardium
Is blood in the right atrium deoxygenated or oxygenated?
What pumps blood into the left atrium? From where?
the pulmonary veins, from the lungs
Is the blood in the left atrium deoxygenated or oxygenated?
What are the ventricles referred to as?
the discharging chambers
What connects the papillary muscles to valve cusps?
What is the function of the pulmonary trunk?
carry deoxygenated blood to the lungs
What is the function of the aorta?
carry oxygenated blood to the body
Which side is the pulmonary circuit pump?
Which side is the systemic circuit pump?
What causes the valves to open and close?
response to changes n pressure
What prevents backflow into the atria when the ventricles contract?
Atrioventricular (AV) valves