A&P 2 Chapter 18 Module 1
Guided by powerful signaling molecules, the human heart develops from __________.
mesoderm
Identify the pericardial structure indicated by "B."
Parietal layer of serous pericardium
Identify the pericardial structure indicated by "C."
Pericardial cavity
Identify the correct sequence of blood flow through the chambers of the heart.
Right atrium, right ventricle, lungs, left atrium, left ventricle
Which of the following statements is not true about the shape, position, and location of the heart?
The heart is enclosed in a double-layered sac called the pleural membrane.
The vessels that carry oxygen to the myocardium are called __________.
coronary arteries
Identify the pericardial structure indicated by "E."
Myocardium
The lining of the heart chambers is called the __________.
endocardium
Which of the following structures lies on the outside surface of the heart and is an integral part of the heart wall?
epicardium
The trabeculae carneae are located in the __________.
ventricles
Identify the pericardial structure indicated by "F."
Endocardium
Identify the pericardial structure indicated by "D."
Epicardium
Which is the correct sequence of layers in the heart wall, starting with the outer layer?
Epicardium, myocardium, endocardium
`Identify the pericardial structure indicated by "A."
Fibrous Pericardium
Match the following structure with its description: Endocardium.
Glistening white sheet of endothelium lining the inside of the heart
Match the following structure with its description: Epicardium.
Inner layer of pericardium (called the visceral layer)
Which of the following is not a role of the pericardium?
It facilitates heart contraction.
Match the following structure with its description: Fibrous pericardium.
Loosely fitting superficial part of the sac enclosing the heart
Match the following structure with its description: Myocardium.
Middle layer of the heart, composed mainly of cardiac muscle
Match the following structure with its description: Serous pericardium.
Thin, slippery, two-layered membrane
The superior chambers of the heart are called the __________.
atria
The interventricular septum forms a dividing wall between the __________.
left and right ventricles
The walls of the __________ are thicker than the walls of any other heart chamber.
left ventricle
What part of the heart is considered the systemic circuit pump?
left ventricle
The inner lining of the fibrous pericardium is formed by the __________.
parietal layer of serous pericardium
The endocardium is composed of __________.
squamous epithelium