LO 7 Cardiac

Question 1

Where is the heart located?

Answer 1

Located in the mediastinum
Lateral to the lungs, posterior by vertebral
Beneath the second rib

Question 2

The 3 layers of pericardium

Answer 2

Visceral pericardium (epicardium), Fibrous, and parietal

Question 3

Talk about the fibrous portion

Answer 3

It is dense irregular CT, anchors the heart, prevents overfilling,surrounds the parietal and visceral layer

Question 4

Talk about Parietal pericardium

Answer 4

Simple squamous epithelial and areolar CT ->inner lining of fibrous pericardium

Question 5

Talk about visceral pericardium

Answer 5

Also called the epicardium, inner most layer also simple squamous epithelial and areolar CT.

Question 6

Talk about the pericardial cavity

Answer 6

Between visceral and parietal pericardium with serous fluid

Question 7

What are auricles

Answer 7

Attached to the outer surface of the heart where the atriums are. Wrinkled like structures, purpose is to increase the capacity of the atrium.

Question 8

Coronary culcus

Answer 8

Deep groove that divides atria and ventricles, contains right coronary artery

Question 9

Describe Anterior & posterior interventricle sulci

Answer 9

Shallow depressions separating L & R ventricles

Question 10

Layers of the heart, describe Epicardium

Answer 10

Outer most layer, serous membrane -simple squamous and areolar CT. Produces serous fluid, may contain adipose along pathways of coronary arteries.

Question 11

Layers of the heart, describe myocardium

Answer 11

Middle layer of the heart made up of concentric layer of cardiac muscles. This muscle pumps the blood.

Question 12

Layers of the heart, describe endocardium

Answer 12

Innermost layers of simple squamous and areolar CT, lines the chambers and continues into the blood vessels as endothelial. Holds the blood within.

Question 13

R side of heart is? L side is?

Answer 13

Deoxygenated, oxygenated

Question 14

How does the R atrium gain blood from¿

Answer 14

The SVC, IVC and coronary sinus

Question 15

Describe contents w/i the atrium

Answer 15

Pectinate muscled which are the prominent muscular ridges on the inside walls and surface of the R auricle.

Question 16

Describe the R ventricle and contents

Answer 16

Pumps blood to the pulmonary trunk. Trabecular cornea which are muscular ridges on the inside. Moderator band which extends from the interventricle septum to the anterior papillary muscles. Contains portions of the conductive system that ensures contraction of the papillary muscle. Corneas arterious: superior end which ends at pulmonary valve and joins the trunk.

Question 17

L atrium describe

Answer 17

L & R pulmonary veins bring oxygenated blood from lungs.

Question 18

L ventricle

Answer 18

Has the thickest walls with no moderator band. Pumps blood to aorta then throughout the body.