Where are sensory signals from the stomach and small intestine sent to trigger a vomiting reflex?
Cerebrum
Esophagus
Pharynx
Medulla oblongata
The Correct Answer is D
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is {"dropdown-group-1":"B"}
Explanation
Correct answer: Liver
The liver is the large, reddish-brown gland in the right upper quadrant beneath the diaphragm; on the model the organ marked X in the upper abdomen is the liver - the major metabolic and bile-producing organ.
Correct Answer is B
Explanation
A. Ciliated columnar epithelium -Found in bronchi and larger airways.
B. Simple squamous epithelium -Type I alveolar cells form thin walls for efficient gas diffusion.
C. Stratified squamous epithelium -Stratified squamous is protective, found in mouth, esophagus.
D. Areolar connective tissue -Alveoli are not composed of connective tissue; they are lined by squamous epithelium.
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