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
Properties of Phytochrome Phytochrome is a chromoprotein: this means it is composed of a protein and a chromophore. The chromophore is actually attached to the protein and is

a) How does the Hardy- Weinberg's expression (p²+2pq+q² =1) Describe that genetic equilibrium is maintained in a population? (b)  List any two factors that can disturb the ge

Q. Which is the normal sign of the electric charge between the two sides of the neuron plasma membrane? What is the potential difference (voltage) generated between these two sides

What is firing rate of carotid artery baroreceptors At 1:00 AM, person X's blood pressure is equal to the blood pressure set point.  At 1:01 AM, there is a decrease in the firi

How Hormonal Status affects the bmr? Thyroid status may be most important factor and can make differences of up to plus or minus 50% for hyperthyroidism or hypothyroidism, resp

Eyes We have a pair of eyes. They are held in socket of the skull by four rectus muscles and two oblique muscles. These muscles control the movements of the eyes. The wall of t

What is polyembryony? Polyembryony is the phenomenon in which a single embryo in its initial embryonic stage separates itself forming many new individuals of the similar sex an

Polymerase chain reaction already has extremely widespread applications and new uses are being devised on a regular basis. Some and definitely not all of the applications are given

Tenofovir disoproxil fumarate (TDF, Viread)  Tenofovir DF is the only nucleotide RTI available for treatment of HIV. It is a prodrug of tenofovir, a potent inhibitor of HIV rep

What are the processes involved in the preparation of plant tissue for free hand sectioning?