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RUSVM Anatomy I > Heart > Flashcards

Flashcards in Heart Deck (22)
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1
Q

What are the two structures of the right auricle?

A

Crista terminalis: boundary between the auricle and sinus

Pectinate muscles

2
Q

What is the opening between the right and left atrium that allows blood to bypass the pulmonary circulation to the non-functional lungs of the fetus?

What is it called after birth?

A

Foramen ovale

Fossa ovalis

3
Q

What is the opening between the atrium and the ventricle?

A

Atritoventricular orifice

4
Q

What vein empties into the right atrium or cranial vena cava?

A

Right azygous vein

5
Q

What are the tendinous chords that extend from the cusps of the AV valve to the papillary muscles?

A

Chordae tendinea

6
Q

Trabeculae septomarginalis

A

Component of the conduction system of the heart extending from the interventricular septal wall to the parietal wall

7
Q

Trabeculae carneae

A

Trabeculations of the inner ventricular wall

8
Q

Conus arteriosus

A

Cone shaped portion of the right ventricle extending towards the pulmonary trunk

9
Q

What is the name of the valve in between the ventricle and the pulmonary trunk?

A

Pulmonary semilunar valve

10
Q

How many cusps are associated with the atrioventricular valves?

A

2

11
Q

What is the name of the valve between the left ventricle and the aorta?

A

Aortic semilunar valve

12
Q

What is the thin muscular partition between the right and left atria?

A

Interatrial septum

13
Q

What is the purpose of the intervenous tubercle?

A

Diverts the blood from the caudal and cranial vena cava into the right atrium

14
Q

What is the muscular partition between the right and left ventricles?

A

Interventricular septum

15
Q

What are the two main surfaces of the heart?

A

Auricular surface: left side positioned in the animal, both auricles in view

Atrial surface: right side in the animal, right atrium is the prominent structure in this view

16
Q

Coronary groove

A

Encircles the base of the heart and located between the atria and ventricles

17
Q

Where is the paraconal interventricular groove and what is found inside?

A

Adjacent to the conus arteriosus of the right ventricle

Paraconal interventricular branch of the left coronary artery and great cardiac vein are in this groove

18
Q

Where is the subsinuosal interventricular groove and what is inside here?

A

Located on the caudodorsal surface of the heart

Left coronary artery inside on the dog and ox
Right coronary artery is inside as well as the left with the horse and pig

19
Q

What is the ductus arteriosus?

A

Fetal structure that serves to shunt the blood from the pulmonary trunk to the aorta

20
Q

What is the ligamentum arteriosum?

A

Fibrous remnant of the ductus arteriosus in the adult

21
Q

What happens if the ligamentum arteriosum has a vascular ring anomaly?

A

Constrict the esophagus which could cause megaesophagus

Persistent right aortic arch

22
Q

What is the nutritional blood supply to the heart?

A

Coronary arteries