Question 12
NECO
•
2018
•
BIOLOGY
•
objective
A labelled diagram of the human heart displays the four chambers, the tricuspid, pulmonary, mitral and aortic valves, and the major vessels: aorta, pulmonary artery, pulmonary veins, superior and inferior vena cava. Arrows indicate the direction of blood flow. List the complete sequence of blood flow through the heart and major vessels, naming each chamber, valve and vessel in order, and indicate which valve prevents backflow at each transition.
Answer Options
A.
Superior/inferior vena cava → right atrium → tricuspid valve → right ventricle → pulmonary valve → pulmonary artery → lungs → pulmonary veins → left atrium → mitral valve → left ventricle → pulmonary valve → pulmonary artery → lungs → left atrium → mitral valve → left ventricle → aortic valve → aorta → systemic circulation → Superior/inferior vena cava
Correct Answer
B.
Superior/inferior vena cava → right atrium → tricuspid valve → right ventricle → pulmonary valve → pulmonary artery → lungs → pulmonary veins → left atrium → mitral valve → left ventricle → aortic valve → aorta → systemic circulation → superior/inferior vena cava
C.
Superior/inferior vena cava → right atrium → tricuspid valve → right ventricle → pulmonary valve → pulmonary artery → lungs → left atrium → mitral valve → left ventricle → aortic valve → aorta → systemic circulation → Superior/inferior vena cava
D.
Superior/inferior vena cava → right atrium → tricuspid valve → right ventricle → aortic valve → aorta → systemic circulation → Superior/inferior vena cava
Correct Answer
B
Correct Option:
Superior/inferior vena cava → right atrium → tricuspid valve → right ventricle → pulmonary valve → pulmonary artery → lungs → pulmonary veins → left atrium → mitral valve → left ventricle → aortic valve → aorta → systemic circulation → superior/inferior vena cava
About This Question
This is
Neco
2018
Biology
Question 12.
It is one of the
objective
questions from the
2018
Neco
Biology
examination.
Difficulty level:
Hard
.