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Flashcards in The heart Deck (34)
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1

Describe the arteries?

blood vessels that consist of muscle and tissue.
They have three layers- inner layer called the intima that contains tissue, the middle layer called media that is made up of muscle and outer layer called adventitia that also consists of tissue.

2

what is the function of the arteries?

Arteries are blood vessels that transport blood rich in oxygen away from the heart.

3

Describe the Aorta?

The aorta is the largest artery in the body. it is connected to the hearts left ventricle.

4

what is the function of the Aorta?

It carries oxygenated blood away from the heart.

5

Describe the pulmonary artery?

The pulmonary artery is connected to the bottom of the hearts right ventricle. It branches into left and right pulmonary arteries that then extend into the left and right lungs.

6

What is the function of the pulmonary artery?

The artery that carries blood from the right ventricle of the heart to the lungs for oxygenation.

7

Description of the pulmonary vein?

There are four pulmonary veins that extend from he left atrium to the lungs: the right superior, the right inferior, the left superior, and the left inferior.

8

what is the function of the pulmonary vein?

Pulmonary veins carry oxygenated blood from the lungs to the left atrium of the heart.

9

Describe the left atrium?

The heart is divided into four chambers; the upper two heart chambers are called atria and are divided into a left and right atrium.

10

what is the function of the left atrium?

receives blood returning to the heart from the pulmonary veins.

11

Describe the mitral (bicuspid) valve?

The mitral valve is located between the left atrium and the left ventricle.

12

what is the function of the Mitral (bicuspid) valve?

Prevents the back flow of the blood as it is pumped from the left atrium to the left ventricle.

13

Describe the left ventricle?

The heart is divided into four chambers; the lower two heart chambers are called ventricles and divided into the left and right ventricle.

14

what is the function of the left ventricle?

The left ventricle receives blood from the left atrium and pumps it to the aorta.

15

Describe the purkinje fibres?

The purkinje fibres are muscle fibres located at the base of the heart and extending from the atrioventricular bundles of fibres.

16

what is the function of the purkinje fibres?

They transmit Impulses from the atrioventricular node to the ventricles of the heart and cause them to contract.

17

Describe the septum?

The septum of the heart contains atrioventricular bundle fibres through which cardiac impulses are carried down the septum to the ventricles of the heart.

18

what is the function of the septum?

The septum separates the lower chambers of the heart into the left ventricle and the right ventricle.

19

Describe the inferior Vena cava?

The inferior vena cava is one of the largest veins in the body. It is located in the lower back.

20

what is the function of the inferior vena cava?

Returns de- oxygenated blood from the legs, back, abdomen and pelvis to the right atrium.

21

Describe the right ventricle?

The heart is divided into four chambers; the lower two heart chambers are called ventricles and divided into a left and right ventricle.

22

what is the function of the right ventricle?

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

23

Describe the tricuspid valve?

The tricuspid valve is located between the right atrium and the right ventricle of the heart.

24

what is the function of the tricuspid valve?

prevents blood flow back into the right atrium of the heart.

25

Describe the right atrium?

The heart is divided into four chambers: the upper two heart chambers are called the atria and are divided into the left and right atrium.

26

what is the function of the right atrium?

The right atrium receives blood returning to the heart from the superior and inferior vena cava.

27

Describe the Atrioventricular node?

The AV node consists of tissue and is located near the bottom of the right atrium.

28

what is the function of the AV node?

It sends impulses to the atrioventricular bundles of fibres and slows down impulses from the sinoatrial node to allow the atria of the heart to contract.

29

Describe the pulmonary veins?

pulmonary veins are blood vessels. There are four pulmonary veins: the right superior, right inferior, left superior, and left inferior.

30

what is the function of the pulmonary veins?

pulmonary veins carry deoxygenated blood from the lungs to the left atrium.

31

Describe the sinoatrial node (SA)?

The sinoatrial node is often referred to as the pacemaker of the heart and is located in the upper part of the hearts right atrium.

32

What is the function of the SA node?

it helps to control the heart rate by sending impulses through the heart muscle.

33

Describe the superior vena cava?

The superior vena cava is one of the largest veins in the body. It is located in the upper chest.

34

what is the function of the superior vena cava?

The superior vena cava returns de-oxygenated blood rom the head, neck, arm and chest to the right atrium.