Lab #4 Heart

Question 1

Right Atrium

Answer 1

Deoxygenated blood is received from the vena cava and then sent to the right ventricle.

Question 2

Left Atrium

Answer 2

Receives blood from the pulmonary veins.

Question 3

Right ventricle

Answer 3

Receives blood from the right atrium and pumps it to the lungs via the pulmonary artery.

Question 4

Left ventricle

Answer 4

Receives arterial blood from the right atrium and pumps it into the aorta.

Question 5

Visceral pericardium

Answer 5

Thin layer of the pericardial sac that closely adheres to the heart.

Question 6

Atrial pericardium

Answer 6

The “ear-like” structures that extend from the atria.

Question 7

Coronary sulcus

Answer 7

Separates the atria from the ventricles.

Question 8

Anterior interventricular sulcus

Answer 8

Marks the external boundary between the right and left ventricles.

Question 9

Posterior interventricular sulcus

Answer 9

Marks the division of the left and right ventricles.

Question 10

Interatrial septum

Answer 10

The wall between the atria of the heart

Question 11

Interventricular septum

Answer 11

Partition between right and left ventricle.

Question 12

Aorta

Answer 12

Conducts freshly oxygenated blood from the heart to the sinuses.

Question 13

Superior vena cava

Answer 13

Carries blood from upper regions of the body to the right atrium.

Question 14

Inferior vena cave

Answer 14

Brings oxygen poor blood from the lower part of the body to the right atrium.

Question 15

Right atrioventricular (tricuspid) valve

Answer 15

Closes when the right ventricle contracts. Allows blood flow into the lungs which prevents back flow into the right atrium.

Question 16

Left atrioventricular (bicuspid/mitral) valve

Answer 16

Allows blood to flow from the left ventricle to the aorta which prevents blood from flowing backward.

Question 17

Chordae tendineae

Answer 17

Maintains the position and tension of the atrioventricular valves.

Question 18

Papillary muscles

Answer 18

“Nipple” like projections of the myocardia which contract when the myocardia contracts.

Question 19

Pulmonary (semilunar) valve

Answer 19

Determine the passage of blood between the ventricles and the main arteries, transporting blood away from the heart to the vital organs.

Question 20

Pulmonary trunk

Answer 20

Artery that carries venous (deoxygenated) blood from the right ventricle of the heart and divides into the right and left pulmonary arteries.

Question 21

R and L pulmonary arteries

Answer 21

R-sends deoxygenated blood to the lungs from the right ventricle.
L-carries oxygen-poor blood to the left lung.

Question 22

R and L pulmonary veins

Answer 22

R superior-drains you lungs upper lobe and middle lobe.
R inferior-drains your right lungs lower lobe.
L superior-drains your left lung’s upper lobe and you lingula.

Question 23

Aortic (semilunar) valve

Answer 23

Determine the passage of blood between the ventricles and the main arteries, transporting blood away form the heart to the vital organs.