Surface markings of the heart, Biology

The Upper Border of the Heart

A:  Mark a point on the lower border of the left second costal cartilage 1.2 cm away from the sternal margin.

B:  Mark a point on the upper border of the right third costal cartilage 1.2 cm away from the sternal margin.

Join these two points with a straight line. The line marks the upper border of the heart which is formed by the atria. Right atrium forms the right one-third and the left atrium forms the  left two   third of the upper border.

Right Border of the Heart

C:  Mark a point on the right sixth costal cartilage 2.5 cm away from the sternal margin.

Connect points B and C a lie which is slightly convex to the right and this line will mark the right border. The right border is formed by the right atrium. 

Lower Border of the Heart

D:  Mark a point in the left fifth intercostal space 9 cm. from the median plane. Join points C and D by a line which passing through the xiphisternal joint. The right twothirds of the lower border is formed by the right ventricle and the left one third is formed by the left ventricle.

Posted Date: 4/27/2013 2:05:47 AM | Location : United States







Related Discussions:- Surface markings of the heart, Assignment Help, Ask Question on Surface markings of the heart, Get Answer, Expert's Help, Surface markings of the heart Discussions

Write discussion on Surface markings of the heart
Your posts are moderated
Related Questions
Q. What is the typical shape of a population growth curve? How can the biotic potential be represented in the same way graphically? A usual population growth curve number of in

Indication :  IABP is commonly used to supporting failing left ventricle after open-I1ca1-t surgery or in cardiogenic shock after myocardial infarction. It is at times used in uns

Define Requirements and Recommended Dietary Allowances (RDA)? What do we mean by requirements and RDA? The requirement level is the amount of nutrient needed to be absorbed to

Explain the relationship between an agonist muscle and its antagonist as it relates to positional control, functional movement and neuromuscular activation. For example, how the tw

Define Mechanisms for Provide protection against colon cancer? Several plausable mechanisms have been formulated by which fibre may provide protection against colon cancer. The

Codex code of practice Codex Alimentarious Commission (CAD) was established in 1963 with the objective to develop International Food Safety Standards to protect human health, w

Surplus red blood cells, required to meet an emergency, are generally stored in what organ of the human body? Is it the: a) Liver b) Spleen c) pancreas d) Kidneys

What is the difference between an ecological niche and a habitat? An ecological place is a set of peculiar activities, resources and strategies that a species explores to repro

Explain Precautions for Estimation of Reducing Sugar by Fehling Soxhlet Method? 1. Clamp the burette so that the tip of the burette is exactly above the mouth of the conical fl

Stem - Plant Growth Substances The role of auxins, cytokinins, ethylene and abscisic acid in controlling the apical bud dominance and lateral bud dormancy (Apical Dominance) a