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Physiology - 3 Questions
What is the primary mechanism of vibration detection in the musculoskeletal system?1) Meissner's corpuscles2) Pacinian corpuscles3) Merkel's discs4) Ruffini's endings
Pacinian corpuscles are rapidly adapting mechanoreceptors that are highly sensitive to high-frequency vibrations and are responsible for detecting rapid changes in pressure.
Which type of autonomic nerve fibers are primarily involved in the pupillary light reflex?1) Muscarinic2) Adrenergic3) Nicotinic4) GABAergic
The pupillary light reflex is mediated by the parasympathetic nervous system, which uses acetylcholine as its neurotransmitter and acts on muscarinic receptors. The contraction of the sphincter pupillae muscle, which is innervated by the parasympathetic system, results in pupil constriction (miosis) in response to light.
Bile salts are involved in the emulsification and absorption of fat, not in neutralizing stomach acid.
MCQ