18.01 Questions

Mesoderm

Guided by powerful signaling molecules, the human heart develops from __________.

Fibrous pericardium

Identify A

Parietal layer of serous pericardium

Identify B

Pericardial cavity

Identify C

Epicardium

Identify D

Myocardium

Identify E

Endocardium

Identify F

Simple squamous epithelium

The endocardium is composed of

b. Glistening white sheet of endothelium lining on the inside of the heart

The endocardium is? a. Thin, slipper, two-layer membrane b. Inner layer of the pericardium ( called the visceral layer) c. Middler layer of the heart, composed mainly of cardiac muscle d. Loosely fitting superficial part of the sac enclosing the heart

b. Loosely fitting superficial part of the sac enclosing the heart

The fibrous pericardium a. Glistening white sheet of endothelium lining on the inside of the heart b. Loosely fitting superficial part of the sac enclosing the heart c. Thin, slippery, two-layer membrane d. Middle layer of the heart, composed mainly of cardiac muscle e. Inner layer of the pericardium ( aka visceral layer)

Parietal layer of serous pericardium

The inner lining of the fibrous pericardium is formed by the

Epicardium, myocardium, endocardium

What is the sequence of layers in the heart wall starting with the outer layer

Epicardium

Which structure lies on the outside surface of the heart and is an integral part of the heart wall?

Middle layer of the heart composed mainly of cardiac muscle

Describe the myocardium

Thin, slippery, two-layered membrane

Describe the serious pericardium layer

Thin, slippery, two-layered membrane

Describe the serous pericardium

a. Inner layer of the pericardium ( called the visceral layer)

Match the following structure with its description: Epicardium. a. Inner layer of pericardium (called the visceral layer) b. Loosely fitting superficial part of the sac enclosing the heart c. Middle layer of the heart, composed mainly of cardiac muscle d. Thin, slippery, two-layer membrane e. Glistening white sheet of endothelium lining on the inside of the heart

Endocardium

The lining of the heart chambers is called the?

Coronary arteries

The vessels that carry O2 to the myocardium are called?

Coronary arteries

The vessels that carry oxygen to the myocardium are called __________.

True

True or false, the pericardium anchors the heart to surrounding structures

False

True or false, the pericardium facilitates heart contractions

True

True or false, the pericardium prevents the heart from overfilling with blood

True

True or false, the pericardium protects the heart

True

True or false? Approximately two-thirds of the heart is found to the left of the midline.

False

True or false? The heart is enclosed in a double-layered sac called the pleural membrane.

True

True or false? The heart is located between the two lungs within the mediastinum.

True

true or false? The heart is shaped like a cone with the base facing the right shoulder.