Which of the following arteries emerges from ascending aorta?
Left phrenic artery
Left coronary artery
Left subclavian artery
Left intercostal artery
The Correct Answer is B
a. Left phrenic artery: The left phrenic artery arises from the abdominal aorta, not the ascending aorta. It supplies blood to the diaphragm.
b. Left coronary artery: The ascending aorta is the first section of the aorta, the major artery leaving the heart. It branches out to give rise to several arteries, including the left coronary artery, which supplies blood to the left side of the heart muscle.
c. Left subclavian artery: The left subclavian artery arises from the aortic arch, not directly from the ascending aorta. It supplies blood to the left arm and head.
d. Left intercostal artery: The intercostal arteries arise directly from the aorta, not specifically the ascending aorta. They supply blood to the muscles and tissues between the ribs.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
a: Ovaries - The ovaries are the female reproductive organs where oogenesis occurs, but they are not the process itself.
b. Oogenesis: Oogenesis is the process by which female gametes (egg cells) are produced through meiosis in the ovaries.
c: Ovulation - Ovulation is the release of a mature egg from the ovary, not the process of egg cell formation.
d: Oocytes - Oocytes are immature egg cells found within the ovaries; they undergo oogenesis to mature into eggs.
Correct Answer is A
Explanation
a. Secretes fluid to reduce friction between layers: This is correct. The pleural membranes secrete pleural fluid, which reduces friction between the visceral and parietal layers during breathing.
b. Secretes a substance that reduces surface tension of alveoli: This describes the function of surfactant, which is secreted by alveolar cells, not pleural membranes.
c. Secretes a substance to keep epithelial cells wet: This is a general description that doesn't specifically apply to pleural membranes.
d. Secretes fluid involved in protection from infections: While pleural fluid may have some protective roles, its primary function is to reduce friction, not directly to protect from infections.
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