Second- and third-order sensory neurons synapse in the thalamus
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You go to the movies after a long day and you begin to nod off as soon as the movie starts. Your head starts to lower a little, but a reflex causes your head to rise. This is called the ________ reflex.
A. flexor (withdrawal) B. withdrawal C. tendon D. crossed extension E. stretch
Cells that respond to ligands
A. are using electrical signals in cellular communication. B. generally produce the ligands. C. possess receptor sites for specific ligands. D. are not functional. E. have lysosomes that destroy the ligands.
What pregnancy disorder is characterized by pregnancy-induced hypertension accompanied by protein in the urine that usually occurs after 20 weeks in the pregnancy?
A. Ectopic pregnancy B. Preeclampsia C. Spontaneous abortion D. Miscarriage
Parasympathetic neurons stimulate the circular muscle of the iris to contract in response to dim light
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