Heart Anatomy | A&P II

____ receives deoxygenated blood from the body

Superior & inferior vena cava

From the superior & inferior vena cava, deoxygenated blood flows into the:

Right atrium

The ___ connects the right atrium to the right ventricle

Tricuspid valve

The ____ connects the right ventricle to the pulmonary trunk

Pulmonary valve

Deoxygenated blood flows from the pulmonary trunk to the ____

Pulmonary arteries

The pulmonary arteries flow to the ____

Lungs

Oxygenated blood flows from the lung tissue to the ____

Pulmonary veins

Oxygenated blood flows from the pulmonary veins to the:

Left atrium

The ____ valve connects the left atrium to the left ventricle

Bicuspid/mitral

The left ventricle is connected to the aorta by the:

Aortic valve

What are the 3 parts of the aorta, in order of bloodflow?

Ascending aorta, aortic arch, descending aorta

What are the semilunar valves?

Pulmonary and aortic

What are the atrioventricular (AV) valves?

Tricuspid and bicuspid/mitral

Blood flows from the aorta into either _____ or ____ circulation

Systemic; coronary

The _____ circuit starts at the right ventricle and ends in the left atrium

Pulmonary

The ____ circuit starts at the left ventricle and ends at the right atrium

Systemic

In a fetus’ heart, the _____ provides a bypass between the left and right atria.

Foramen ovale

This vestigial structure in the right atrium is the:

Fossa ovalis

The equivalent to the fossa ovalis in the left atrium is the:

Fossa lunata

The (anatomically) rightmost branch of the aorta

Brachiocephalic artery

The middle branch of the aorta

Left common carotid artery

The (anatomically) leftmost branch of the aorta

Left subclavian artery

The right subclavian & right common carotid arteries branch off of the:

Brachiocephalic artery

The fibrous band connecting the pulmonary artery to the aorta is called:

Ligamentus arteriosus

In a fetus’ heart, the _____ provides a bypass between the pulmonary artery and the aorta.

Ductus arteriosum

This layer protects the heart and is composed of dense irregular connective tissue

Fibrous pericardium

The serous membrane of the heart is composed of the ____ (outer) and ___ (inner) layers

Parietal; visceral

The heart lies in the:

Mediastinum

The visceral layer of the serous pericardium (membrane) is also called the:

Epicardium

The muscular layer of the heart

Myocardium

The inner lining of the heart

Endocardium

The ____ is the serous fluid filled space between the parietal & visceral pericardium

Pericardial cavity

Separates the right & left atria

Interatrial septum

Separates the right & left ventricles

Interventricular septum

The groove separating the atria and ventricles

Coronary sulcus aka atrioventricular groove

This groove is the:

Anterior interventricular sulcus

This groove is the:

Posterior (or inferior) interventricular sulcus

Strong fibers that attach to the tricuspid & bicuspid valves to prevent backflow

Chordae tendineae

The _____ connect to the chordae tendineae to prevent backflow

Papillary muscles

Muscular ridges in the ventricles that reduce adhesion of blood to ventricular wall

Trabeculae carneae

Four fibrous bands around heart valves & bases of pulmonary trunk and aorta:

Cardiac skeleton

The natural pacemaker of the heart, located in the right atrium

Sinoatrial node

The cardiac muscle cells that control and coordinate heartbeat

Conducting system

The cardiac muscle cells that produce contractions

Contractile cells

These structures interconnect cardiac muscle cells

Intercalated discs

Intercalated discs are strongly anchored by

Desmosomes

____ allows from substances to pass between cardiac cells

Gap junctions