Where is the central chemoreceptor located?
Brain and aortic arch
Medulla of the brain stem
Carotid arteries and brain stem
Carotid arteries and aortic arch
The Correct Answer is B
A. Brain and aortic arch: The aortic arch contains peripheral chemoreceptors, but the central chemoreceptor is in the medulla.
B. Medulla of the brain stem: Central chemoreceptors located in the medulla monitor the levels of carbon dioxide (via pH changes) in the cerebrospinal fluid to regulate breathing.
C. Carotid arteries and brain stem: The carotid arteries contain peripheral chemoreceptors, but not central chemoreceptors.
D. Carotid arteries and aortic arch: These locations house peripheral chemoreceptors, not central ones.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Lipids and proteins: While bile is involved in fat digestion, it does not emulsify proteins.
B. Proteins: Bile does not emulsify proteins. Proteins are broken down by enzymes like pepsin.
C. Carbohydrates and proteins: Bile has no role in the digestion of carbohydrates or proteins.
D. Lipids: Bile emulsifies lipids, breaking them into smaller droplets to facilitate enzymatic digestion by lipases.
Correct Answer is B
Explanation
Palatine Tonsils:
- Location: B. Oropharynx
The palatine tonsils are located on either side of the oropharynx, between the anterior and posterior pillars. They are the most commonly recognized tonsils and are often visible during a throat examination.
Lingual Tonsils:
- Location: B. Oropharynx
The lingual tonsils are located at the base of the tongue, also within the oropharynx. They are situated just posterior to the anterior lingual region.
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