What is the correct order of deoxygenated blood flow as it enters and then exits the heart?
Enters the superior or interior vena cava; exits the pulmonary arteries
Enters the aorta; exits the pulmonary veins
Enters the superior or inferior vena cava; exits the coronary arteries
Enters the pulmonary veins; exits the aorta
The Correct Answer is A
A. Enters the superior or inferior vena cava; exits the pulmonary arteries: Deoxygenated blood from the body enters the heart through the superior or inferior vena cava and flows into the right atrium. It then passes into the right ventricle and exits through the pulmonary arteries to the lungs for oxygenation.
B. Enters the aorta; exits the pulmonary veins: The aorta and pulmonary veins both handle oxygenated blood, not deoxygenated blood, making this incorrect.
C. Enters the superior or inferior vena cava; exits the coronary arteries: The coronary arteries supply the heart muscle itself with oxygenated blood, so this is incorrect for deoxygenated blood.
D. Enters the pulmonary veins; exits the aorta: Both the pulmonary veins and the aorta are part of the oxygenated blood circuit, making this incorrect for deoxygenated blood flow.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Fibroblasts: Fibroblasts are responsible for synthesizing the extracellular matrix and collagen, which are essential for tissue repair and healing after an injury.
B. Complement cells: Incorrect. Complement cells are part of the immune response that helps to mark pathogens for destruction, but they do not proliferate during tissue repair.
C. Prostaglandins: Incorrect. Prostaglandins are lipid compounds that play a role in inflammation and pain but are not cells and do not proliferate.
D. Leukotrienes: Incorrect. Leukotrienes are inflammatory mediators involved in the immune response but do not proliferate during tissue repair.
Correct Answer is B
Explanation
A. Mouth: Digestion in the mouth is primarily due to amylase, which breaks down carbohydrates, not trypsin.
B. Stomach: Trypsin is produced as trypsinogen in the pancreas and is activated in the small intestine. While trypsin is crucial for digestion, it is important in the small intestine.
C. Large intestine: The large intestine is mainly involved in water absorption, not digestion by enzymes like trypsin.
D. Oesophagus: The esophagus transports food but does not produce enzymes like trypsin.
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