26 Questions
What is the definition of arteriovenous anastomosis?
A direct connection between arteries and veins
What is the primary function of the heart?
Pumping blood to the body
How much does the heart typically weigh?
300g
What is the shape of the heart?
Conical
What is unique about the connection in arteriovenous anastomosis?
It does not involve capillaries
What is the main function of the sulcus in the heart?
To separate between heart features
How many atrium and ventricle are present in the heart?
2 atrium and 2 ventricle
What supplies blood to the heart?
Right and left coronary arteries
What is the final destination of the blood from the capillaries in the pulmonary circulation?
Left atrium
What is the pathway of blood from the body in the systemic circulation?
Arteries -> arterioles -> capillary meshwork -> venules -> veins
What is the final destination of the coronary sinus?
Right atrium
Where are extremely thin-walled structures prominently found?
Liver, spleen, bone marrow, and endocrine glands
What is the main function of anastomoses?
To join branches of arteries and offer collateral circulation
Collaterally circulating blood flow is beneficial in what condition?
Obstruction of large arteries
Which organs typically require rapid exchange facilitated by thin-walled structures?
Liver and spleen
What term is used to describe the joining of arterial branches?
Anastomoses
In which direction is the base of the heart directed?
Upwards and to the right
What is the outer covering of the heart called?
Pericardium
In which cavity of the body is the heart located?
Thoracic cavity
How is the heart positioned in relation to the lungs?
Between the two lungs
In which direction is the apex of the heart directed?
Downwards and to the left
What proportion of the anterior ventricular area is made up of the right ventricle?
2/3
Which surface of the heart rests on the diaphragm?
Diaphragmatic
What forms the apex of the heart?
Left ventricle
Which structure is found in the sternocostal anterior atrial area?
Right auricle
What proportion of the diaphragmatic ventricular area is made up by the left ventricle?
2/3
This quiz covers the features of sinusoids, including their thin walls and presence in certain organs, and the definition of anastomoses, which provide alternative pathways for blood flow.
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