Anatomy Of The Heart Ap Chapter 20 Wh

Front 1

Pulmonary circuit

Back 1

Network of blood vessels that extend between the heart and peripheral tissues.carries blood to and from the gas exchange surface of the lungs.

Front 2

Systemic circuit

Back 2

Transports blood to and from the rest of the body.

Front 3

Arteries or efferent vessels

Back 3

Carries blood away from the heart

Front 4

Veins or efferent vessels

Back 4

Return blood to the heart

Front 5

Capillaries

Back 5

Interconnect the smallest arteries and smallest veins. These are microscopic thin-walled.

Front 6

Exchange vessels

Back 6

Capillaries are called this because their thin walls permit the exchange of nutrients. Dissolved gases. And waste products between the blood and surrounding tissues.

Front 7

Right atrium

Back 7

Receives blood from the systemic circuit and passes it to the right ventricle

Front 8

Right ventricle

Back 8

Pumps blood into the pulmonary circuit

Front 9

Left atrium

Back 9

Collects blood from the pulmonary circuit and empties it I go the left ventricle

Front 10

Left ventricle

Back 10

Pumps blood into the systemic circuit

Front 11

Apex

Back 11

The inferior pointed tip of the heart

Front 12

Mediastinum

Back 12

Is the region between the two pleura cavities

Front 13

Pericardial sac or fibrous pericardium

Back 13

Surrounds the heart and consists of a dense network of collagen fibers

Front 14

Pericardium

Back 14

the lining of the pericardial cavity

Front 15

Base of the heart

Back 15

Where great vessels are attached. The air space inside the balloon corresponds to the pericardial cavity

Front 16

Visceral pericardium or epicardium

Back 16

Covers and adheres closely to the outer surface of the heart.

Front 17

Partial pericardium

Back 17

Lines the inner surface of the tough pericardial sac surrounding the heart

Front 18

Visceral pericardium or epicardium

Back 18

Covers and adheres closely go the outer surface of the heart

Front 19

Parietal pericardium

Back 19

Lines the inner surface of the fought pericardial sac

Front 20

Pericardial cavity

Back 20

The small space between the parietal and visceral surfaces

Front 21

Pericardial fluid

Back 21

Is secreted by the pericardial membranes and normally contains 15-50 ml of fluid. This acts as a lubricant, reducing friction between opposing surfaces as the heart beats

Front 22

Pericarditis

Back 22

Pathogens can infect the pericardium producing inflammation

Front 23

Auricle

Back 23

Expandable extension of an atrium

Front 24

Coronary sulcus

Back 24

A deep groove , marks the border between the atria and the ventricles

Front 25

Anterior and posterior interventricular sulcus

Back 25

Are shallow depressions that mark the boundary between the left and right ventricles.

Front 26

Epicardium

Back 26

Is the visceral pericardium that covers the outer surface of the heart

Front 27

Myocardium page 672 and figure 20-4 pg 674

Back 27

Muscular wall of the heart. Forms the atria and ventricles. This layer contains cardiac muscle tissue, blood vessels, and nerves.

Front 28

Endocardium

Back 28

Covers the inner surface of the heart, including those of the heart valves

Front 29

Cardiac muscle cells

Back 29

Are interconnected by intercalated disc

Front 30

Intercalated discs

Back 30

The interlocking membranes of adjacent cells are held together by desmosome and linked by gap junctions

Front 31

Inter atrial septum

Back 31

The atria is separated by this

Front 32

Inter ventricular septum

Back 32

Ventricles are separated by this

Front 33

Atrioventricular valves

Back 33

Are folds of fibrous tissue that extend into the openings between the atria and ventricles. These valves permit blood to flow only in one direction: from the atria to the ventricles

Front 34

The right atrium

Back 34

Receives blood from the systemic circuit through the two great veins; superior vena cava and the inferior vena cava

Front 35

Superior vena cava

Back 35

Opens into the posterior and superior portion of the right atrium. It delivers blood to the right atrium from the head, neck, upper limbs sand chest.

Front 36

Inferior vena cava

Back 36

Opens into the posterior and inferior portion of the atrium. It carries blood to the right atrium from the rest of the trunk, the viscera, and the lower limbs

Front 37

Cardiac veins

Back 37

Drains the myocardium return blood to the coronary sinus

Front 38

Coronary sinus

Back 38

A large thin-walled vein that opens into the right atrium inferior to the connection with the superior vena cava