Interior of the Heart

Question 1

Which side of the heart receives oxygenated blood

Answer 1

Left atrium

Question 2

What is the auricle

Answer 2

Atrias

Question 3

Why is the left atrium not visible in the situ position

Answer 3

Due to it is postponed at the back of the heart

Question 4

What side of the heart receives deoxygenated blood

Answer 4

Right atrium via superior and inferior vena cava

Question 5

Besides the vena cava what other vessel drains into the right atrium

Answer 5

Coronary sinus

Question 6

define pectinate muscles

Answer 6

Parallel ridges on the wall of the heart

Question 7

Define crista terminalis

Answer 7

Behind the right atrium internal smooth muscle.

Question 8

What is the defect between the right and left atria in the foetal heart

Answer 8

Foramen ovale

Question 9

What is the purpose of the foreman ovale in the foetus

Answer 9

It allows the oxygenated blood to come from the umbillical veins via inferior vena cava bypass pulmonary circulation

Shunt oxygenated blood from right to left atria.

Question 10

What happens to the foreman ovale after birth.

Answer 10

It closes after birth when the lungs become functional

Question 11

How does the left and right ventricles differ

Answer 11

Differ in shape as right vernticle is more triangular and left ventricular is more thicker

Question 12

What are the trabeculae carneae

Answer 12

Muscular columns which project the inner surface of the right and left ventricles

Question 13

Where can you find the tricuspid valves

Answer 13

Between right atrium and ventricles

Question 14

Where can you find the mitral valves

Answer 14

Between left atrium and ventricles

Question 15

What are the chord tendineae

Answer 15

Tough tendinous strands that hold atrioventricular valves in place

Question 16

What is the role of papillary muscles

Answer 16

Attach to the cusps of the atrioventicular valved via the chordineae tenidnae and contract to allow prolapsed of valves

Question 17

Define incompetence in the heart

Answer 17

When valves dont close properly

Question 18

Define stenosis

Answer 18

valves become narrowed which affects ability to open and allow blood to flow through.

Question 19

How does tricuspid regurgitation affect the heart

Answer 19

Causes back flow of blood into the right atrium when right ventricular contracts

Question 20

How does mitral stenosis affect the heart

Answer 20

Volume of blood brings oxygen brings oxygen from lungs to be reduced.

Question 21

Where are the aortic sinuses

Answer 21

ascending aorta

Question 22

How does aortic stenosis affect the heart

Answer 22

reduced blood flow to the aorta

Question 23

How does ASD arise

Answer 23

It occurs in the right and left atria as they fail to communicate to close when the heart is developing. It causes the oxygenated blood to flow from the left atria to the right atrium causing it to enlarge and weaken

Question 24

How does VSD arise

Answer 24

When the septum fails to form and causes mixing of deoxygenated and oxygenated blood

Question 25

Where is the ligamentum arteriousm

Answer 25

Located in the left pulmonary artery

Question 26

What is the moderator band

Answer 26

Muscular heart tissue found in the left ventricle