Physiology Of Heart Flashcards
What’s the 4 different chambers of the heart?
Two superior atria
Two inferior ventricles
What does the interatrial septum do?
Separates the atria
Fossa ovalis
Thumb print
Remnant of foramen ovale of fetal heart
Interventricular septum
Separates ventricles
What are the receiving chambers?
Atria
Small thin-walled chambers; contribute little to propulsion of blood
Atria
Auricles
“Ears”
Appendages that increase atrial volume
Right atrium
Receives deoxygenated blood from the body
Anterior portion is smooth-walled
Posterior portion contains ridges formed by Pectinate muscles
Posterior and anterior regions are separated by crista terminalis
What three veins empty into the right atrium ?
Superior vena cava
Inferior vena cava
Coronary Sinus
Superior vena cava
Returns blood from body regions above the diaphragm
Inferior vena cava
Returns blood from the body region s below the diaphragm
Coronary sinus
- Return blood from coronary veins
What part of the heart receives oxygenated blood from the lungs?
Left atrium
Where are pectinate muscles found?
Auricles
How many pulmonary veins return Blood from lungs?
4
Ventricles
The discharging Chambers
Make up most of the volume of the heart
thicker walls than atria
What makes up most of the anterior surface?
Right ventricle
Posteroinferior surface
Left ventricle
Trabecular carneæ
Irregular ridges of muscle on ventricular walls
Papillary Muscles
Project into ventricular cavity
What anchors the chordae tendineae
Papillary muscle
Where do the chordae tendineae attach to?
Heart valves
What part of the heart actually pumps the heart?
Ventricles
What pumps blood into the pulmonary trunk?
Right ventricle
