What occurs during internal respiration?
Carbon dioxide diffuses out of the blood.
Oxygen binds with the hemoglobin.
Carbon dioxide dissociates from the hemoglobin.
Oxygen diffuses out of the blood.
The Correct Answer is D
A. Carbon dioxide diffuses out of the blood: This describes external respiration in the lungs.
B. Oxygen binds with the hemoglobin: This happens in the lungs during external respiration.
C. Carbon dioxide dissociates from the hemoglobin: This occurs during external respiration when carbon dioxide is released into the lungs.
D. Oxygen diffuses out of the blood: Internal respiration refers to the exchange of gases between the blood and tissues, where oxygen diffuses out of the blood into the tissues for cellular use.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Trabeculae: These are thin connective tissue strands that extend from the capsule of the lymph node into the interior. They help to divide the lymph node into distinct compartments or regions, which include the cortex (outer area) and medulla (inner area). This compartmentalization is important for the organization and function of the lymph node, allowing it to efficiently filter lymph and facilitate the immune response.
Correct Answer is B
Explanation
A. Superior vena cava: The superior vena cava carries deoxygenated blood back to the heart, and pressure here is low.
B. Ascending aorta: The ascending aorta is where blood is ejected from the left ventricle, leading to the highest pressure in the circulatory system.
C. Abdominal aorta: While the pressure is still high in the abdominal aorta, it is lower compared to the ascending aorta.
D. Pulmonary trunk: The pulmonary trunk carries blood to the lungs, and the pressure is lower compared to the systemic circulation.
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