10 Questions
According to the modern view, which of the following statements is true?
Blood in the ventricle and truncus arteriosus is completely mixed.
What is the function of the inter-auricular septum and spiral valve in the truncus arteriosus according to the modern view?
They have become functionless in the frog.
What is the difference between the blood received from the skin and buccal cavity, and the blood received from the lungs?
There is no difference in the oxygenation levels of the blood.
Which of the following statements about arteries is true?
They carry blood away from the heart to different parts of the body under high pressure with great speed.
What is the function of the semilunar valves in veins?
They prevent the backflow of blood away from the heart.
Which of the following statements about veins is false?
They are thick-walled and non-collapsible vessels.
What is the purpose of the three layers in the wall of blood vessels?
To provide structural support and allow for the contraction and relaxation of the vessels.
Which of the following is the correct order of the layers in the wall of a blood vessel, from outermost to innermost?
Tunica externa, tunica media, tunica interna
What is the function of the auricles in the frog's heart?
To pump blood to the ventricle.
What is the role of the ventricle in the frog's heart?
To receive blood from the auricles and pump it to the body.
Learn about the structure and features of the heart ventricles, including the common pulmonary veins, auricles, and ventricular walls. Explore the columnae carneae and auriculoventricular valves.
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