Which of the following might happen if a person begins laughing while swallowing a liquid?
A. Relaxation of the soft palate allows liquid to enter the nasal cavity.
B. Laryngeal constriction forces liquid through the pharynx.
C. Nothing; swallowing will be normal.
D. The tongue might be swallowed.
E. Peristalsis will not begin.
Answer: A
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Initiating the withdrawal reflex in both legs at the same time would cause one to
A. maintain posture longer. B. fall. C. decrease muscle tension. D. develop resistance in one limb and reduce resistance in the other. E. hop.
During the patellar reflex, what structure acts as the effector?
A) Spinal cord's posterior horn B) Rectus femoris muscle C) Spinal cord's anterior horn D) Proprioceptor
The subatomic particles that are responsible for the chemical behavior of atoms are the ________
A) protons B) neutrons C) electrons D) isotopes E) ions
Pulmonary circulation is a ________ resistance and ________ pressure pathway.
A. high; low B. low; high C. high; high D. low; low