CB Heart (practical) Anatomy Division Staff Objectives Quiz

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Describe the interior of the right atrium.

The interior of the right atrium is divided into the atrium proper and the sinus venarum, demarcated by the crista terminalis.

What structure separates the right atrium from the left atrium?

The right atrium is separated from the left atrium by the interatrial septum.

Explain the position of the right auricle in relation to the ascending aorta.

The right auricle projects forwards and to the left, overlapping the ascending aorta.

What is the significance of the crista terminalis in the right atrium?

The crista terminalis extends between the openings of the superior vena cava and inferior vena cava, demarcating the atrium proper from the sinus venarum. Signup and view all the answers

What forms the right border of the heart and how is it positioned relative to the left atrium?

The right atrium forms the right border of the heart, separated from the left atrium by the interatrial septum. Signup and view all the answers

What separates the two atria from each other?

Interatrial septum Signup and view all the answers

How is the interior of the right atrium related to the external surface of the heart?

The sulcus terminalis on the external surface corresponds to the crista terminalis inside the right atrium. Signup and view all the answers

What structure separates the left atrium from the descending thoracic aorta and esophagus?

Oblique sinus of pericardium and fibrous pericardium Signup and view all the answers

Name the orifices in the left atrium.

Four pulmonary veins, left atrioventricular orifice, Venae cordis minimi Signup and view all the answers

What is the cavity of the left atrium like?

Smooth with a few pectinati in the left auricle Signup and view all the answers

Describe the mitral (bicuspid) valve.

Consists of 2 cusps, anterior being larger Signup and view all the answers

What are the features of the inflow part of the left ventricle?

Rough part with trabeculae carneae and papillary muscles Signup and view all the answers

What is the name of the anterior rough part of the right atrium?

A-Atrium proper Signup and view all the answers

What structure forms most of the inferior border of the right ventricle?

Right Ventricle Signup and view all the answers

What are the openings that the sinus venarum receives?

Opening of S.V.C. and Opening of I.V.C. Signup and view all the answers

Where is the fossa ovalis located?

Above and to the left of the I.V.C. orifice Signup and view all the answers

What divides the cavity of the right ventricle into an inflow and outflow part?

Tricuspid orifice Signup and view all the answers

What is the raised, curved margin of the fossa ovalis called?

Annulus ovalis (limbus fossa ovalis) Signup and view all the answers

What is the function of the septomarginal trabecula (moderator band) in the heart?

Prevent overdistension of the right ventricle. Signup and view all the answers

How many papillary muscles are there in the heart and what are their attachments?

There are 3 papillary muscles. The anterior papillary muscle is attached to anterior and posterior cusps of tricuspid valve, the posterior papillary muscle is attached to the posterior and septal cusps, and the septal papillary muscles are attached to the anterior and septal cusps. Signup and view all the answers

What is the oval aperture between the right atrium and right ventricle called?

Right atrioventricular orifice. Signup and view all the answers

How many cusps does the pulmonary valve have?

3 semilunar cusps. Signup and view all the answers

Where does the septomarginal trabecula (moderator band) extend from and to?

From the interventricular septum to the base of the anterior papillary muscle. Signup and view all the answers

What separates the A-V orifice infundibulum in the heart?

The anterior cusp of the right atrioventricular valve. Signup and view all the answers

What is the continuation of the great cardiac vein in the heart?

Coronary sinus Signup and view all the answers

Where does the coronary sinus open in the heart?

Right atrium Signup and view all the answers

Which vein ascends in the anterior interventricular groove and joins the left end of the coronary sinus?

Great cardiac vein Signup and view all the answers

In which groove does the middle cardiac vein ascend, joining the coronary sinus at its right end?

Posterior interventricular groove Signup and view all the answers

Which vein ascends on the diaphragmatic surface of the left ventricle to join the middle of the coronary sinus?

Posterior vein of left ventricle Signup and view all the answers

What is the name of the vein that descends on the back of the left atrium to join the coronary sinus at its left end?

Oblique vein of left atrium Signup and view all the answers