Ch 15: Heart

Question 1

Layers of the pericardium

Answer 1

-Fibrous pericardium (Outer)
-serous Pericardium (inner)
-visceral
-Parietal
-Pericardial cavity (fluid space between visceral and parietal layers of SEROUS pericardium)

Question 2

Layers of the heart wall

Answer 2

-epicardium (visceral layer of serous pericardium)
-Endocardium (Lines heart and consists of squamous epithelial cells)
-Myocardium (Composed of cardiac muscle, is the thickest of three layers)

Question 3

Atria

Answer 3

Serve as reservoirs

Question 4

Ventricles

Answer 4

Serve as pumps, receive blood from the atria

Question 5

Another name for bicuspid valve

Answer 5

Mitral valve

Question 6

The right coronary artery supplies blood to

Answer 6

-The right atrium
-Part of the left atrium
-Most of the right ventricle
-The inferior part of the left ventricle

Question 7

Left coronary artery supplies blood to

Answer 7

-Anterior descending artery
-Circumflex arteries

Question 8

Coronary sinus returns blood to here

Answer 8

Right atrium

Question 9

Path of cardiac conduction (also know diagram)

Answer 9

-Sinoatrial node
-Inter-arterial bundle Causes atria to contract
-Atrioventricular node
-Bundle of his or atrioventricular bundle
-Right and left bundle branches
-Purkinje fibres Cause ventricles to contract