Exercise 30 Anatomy of the heart Flashcards
The heart is enclosed in a double-walled sac called…..
Pericardium
The left ventricle discharges blood into the _____.
Aorta
The right atrioventricular valve is AKA ______.
Tricuspid valve
What is cardiac muscle referred to as?
myocardium
Four valves force a one-way flow of blood through the heart chambers what are they?
Tricuspid valve, Bicuspid valve, pulmonary valve, and aortic valve
True or false
The blood flowing through the heart also acts to nourish the myocardium.
False: The heart receives nourishment from the coronary arteries.
What is the function of the fluid that fills the pericardial sac?
It allows the heart to move and beat without friction
what is the role of chordae tendineae?
They are tiny white collagenic cords that hold the cusps of the valves in place so they are unable to reverse. the are AKA “heart strings”
what 4 features are visible in a slide of cardiac muscle?
- intercalated discs
- Nucleus of cardiac fiber
- Striations
- Cardiac muscle fibers
semilunar valves prevent backflow of blood into the _______, and mitral and tricuspid valves prevent back flow of blood into the _______.
Ventricles, Atrium
Where is the Apex of the heart?
The inferior most part of the heart
The heart is a double pump that serves 2 circulations. The right side pumps blood through the ______ _______. The left side pumps blood through the ________ _______.
Pulmonary circuit, systemic circuit
What part of the heart is considered the Base?
the upper broader area which the great vessels emerge
What are the 6 major coronary arteries?
- Right cornary artery
- Right marginal artery
- Posterior interventricular artery
- Anterior interventricular artery
- Circumflex artery
- Left coronary artery
