Untitled Quiz

Questions and Answers

carries oxygenated blood

conducts blood to the left atrium

arises from the right ventricles (correct)

has the mitral valve at its opening.

have wide pores

are drainage system

carry blood to the tissues (correct)

filters the drained fluid through the lymph nodes.

allow blood to pass from ventricles to atria

mitral valve is present between right atrium and right ventricles

are open during diastole (correct)

all have three cusps

generates a higher pressure. Signup and view all the answers

prevents backflow from ventricle to atrium. Signup and view all the answers

capillaries. Signup and view all the answers

make the cardiac muscle function as a syncytium. Signup and view all the answers

helps cardiac muscle to act as one unit Signup and view all the answers

has the highest rate of automatic rhythmicity Signup and view all the answers

has a shorter absolute refractory period (A.R.P.) Signup and view all the answers

Study Notes

The left ventricle has a thicker wall than the right ventricle because it pumps blood to the entire body, while the right ventricle only pumps blood to the lungs.
The atrioventricular valves are located between the atria and ventricles, and they allow blood to flow from the atria to the ventricles while preventing backflow.

One of the options is not true about lymphatic vessels (the correct answer is not provided in the text).

The main site for exchanges in the circulation is the capillaries.
The main function of gap junctions is to allow for the direct exchange of ions and small molecules between adjacent cells.
Gap junctions in the cardiac muscle allow for the rapid transmission of electrical impulses between cardiac cells, enabling the heart to beat synchronously.

The S.A node is the pace-maker for the heart because it has the ability to generate electrical impulses at a faster rate than other parts of the heart.
One of the options is false regarding cardiac muscle (the correct answer is not provided in the text).