Heart Anatomy

Front 1

Describe the location of the heart in the mediastinum.

Back 1

lungs are to the left and right. the diaphragm on the bottom, the sternum (breastbone) in front, and the vertebral column (backbone) to the rear.

Front 2

What is the function of the heart?

Back 2

To pump blood to the body and lungs

Front 3

What is the structure of the fibrous pericardium?

What is it's function?

Back 3

Fibrous CT with a inner, one cell layer of delicate membrane

Anchors the heart to the thoracic cavity. connected to muscle fibers of diaphragm as well as tendons.

Front 4

Serous Pericardium

Back 4

The serous pericardium is deeper than the fibrous pericardium. It contains two layers, both of which function in lubricating the heart to prevent friction from occurring during heart activity:

Front 5

Parietal layer of serous pericardium

Back 5

The layer adherent to the fibrous pericardium is the parietal layer.

Front 6

Mitral valve

Back 6

The mitral valve (also known as the bicuspid valve or left atrioventricular valve) is a dual-flap valve in the heart that lies between the left atrium and the left ventricle The mitral valve and the tricuspid valve are known collectively as the atrioventricular valves because they lie between the atria and the ventricles of the heart and control the flow of blood.

Front 7

Tricuspid Valve

Back 7

The tricuspid valve (also known as the right atrioventricular valve) is on the right side of the heart, between the right atrium and the right ventricle

Front 8

Semilunar valves

Back 8

Aoritic valve lies between the left ventricle and the aorta. The aortic valve has three cusps.

The pulmonary valve lies between the right ventricle and the pulmonary artery and has three cusps.

Front 9

intercalated discs

Back 9

Three types of membrane junctions exist within an intercalated disc—fascia adherens, macula adherens (aka desmosomes), and gap junctions.

* Fascia adherens are anchoring sites for actin, and connects to the closest sarcomere.

* Macula adherens stop separation during contraction by binding intermediate filaments joining the cells together also called a desmosome.

* Gap junctions allow action potentials to spread between cardiac cells by permitting the passage of ions between cells, producing depolarization of the heart muscle.

Front 10

What is functional syncytium

Back 10

The ability of the heart muscles to function as one cell

Front 11

Path of depolarization

Back 11

electrical propagation is transmitted from the Sinoatrial Node through both atria and forward to the Atrioventricular Node.

from the AV node to the Ventricle or Purkinje Fibers

Both the SA and AV nodes stimulate the Myocardium

Front 12

The tricuspid valve is at the exit of the

Back 12

right atrium.

Front 13

The pulmonary valve is at the exit of the

Back 13

right ventricle.

Front 14

The mitral valve is at the exit of the

Back 14

left atrium.

Front 15

The aortic valve is at the exit of the

Back 15

left ventricle.

Front 16

The right side of the heart collects oxygen-poor blood from the body and pumps it to

Back 16

the lungs

Front 17

The left side of the heart collects oxygen rich blood from the lungs and pumps it to

Back 17

the body

Front 18

All blood enters the right side of the heart through which to veins?

Back 18

The superior and inferior vena cavas

Front 19

From the vena cava's the blood flows to the

Back 19

Right atrium

Front 20

From the right ventricle the blood flows to the

Back 20

pulmonary artery

Front 21

Blood comes into the left ventricle by way of the

Back 21

pulmonary veins

Front 22

Blood exits the left ventricle by way of

Back 22

The aortic valve and on to the aorta........now out to the body.

Front 23

Blood from the body flows (describe path to lungs):

Back 23

* to the superior and inferior vena cava,
* then to the right atrium
* through the tricuspid valve
* to the right ventricle
* through the pulmonic valve
* to the pulmonary artery
* to the lungs

Front 24

The blood picks up oxygen in the lungs, and then flows from the lungs:

Back 24

# o the pulmonary veins
# to the left atrium
# through the mitral valve
# to the left ventricle
# through the aortic valve
# to the aorta
# to the body

Front 25

The right side of the heart collects oxygen-poor blood from the body and pumps it to

Back 25

the lungs

Front 26

The left side of the heart collects oxygen rich blood from the lungs and pumps it to

Back 26

the body

Front 27

All blood enters the right side of the heart through which to veins?

Back 27

The superior and inferior vena cavas

Front 28

From the vena cava's the blood flows to the

Back 28

Right atrium

Front 29

From the right ventricle the blood flows to the

Back 29

pulmonary artery, then to the lungs

Front 30

Blood comes into the left ventricle by way of the

Back 30

pulmonary veins

Front 31

Blood exits the left ventricle by way of

Back 31

The aortic valve and on to the aorta........now out to the body.

Front 32

Blood from the body flows (describe path to lungs):

Back 32

* to the superior and inferior vena cava,
* then to the right atrium
* through the tricuspid valve
* to the right ventricle
* through the pulmonic valve
* to the pulmonary artery
* to the lungs

Front 33

The blood picks up oxygen in the lungs, and then flows from the lungs:

Back 33

# o the pulmonary veins
# to the left atrium
# through the mitral valve
# to the left ventricle
# through the aortic valve
# to the aorta
# to the body

Front 34

T Wave?

Back 34

T wave - coincides with the recovery phase of the ventricles.

Front 35

The coronary ateries drain into the coronary sinus which drains into the ...

Back 35

right atrium