Identify the structure identified by the X in the picture below.
Fill in the blank
The Correct Answer is {"dropdown-group-1":"C"}
Correct answer: Interventricular septum (IV septum)
The labeled structure is the interventricular septum, the muscular wall separating the left and right ventricles.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Biliverdin: biliverdin is a green pigment formed during heme breakdown and does not contain iron.
B. Heme: the heme moiety of hemoglobin contains an iron atom (Fe²⁺) at its center that binds oxygen.
C. Bilirubin: bilirubin is a breakdown product of biliverdin and does not contain iron.
D. Globin: globin is the protein part of hemoglobin (amino-acid chains); iron is in the heme portion, not the globin polypeptide.
Correct Answer is D
Explanation
A. Cerebrum: the cerebrum is involved in conscious processing; vomiting reflex is coordinated by brainstem centers.
B. Esophagus: the esophagus is a peripheral organ and a route for vomitus, not the control center for the reflex.
C. Pharynx: the pharynx is an anatomical structure involved in expulsion but not the central integrative center for vomiting.
D. Medulla oblongata: the medulla oblongata (brainstem vomiting center and chemoreceptor trigger zone nearby) integrates visceral sensory input and coordinates the vomiting reflex.
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