Acceleration or head movements cause the fluid in the vestibular apparatus to stimulate action potentials by ________
a. bending cilia on mechanoreceptors
b. binding to axons of sensory receptors
c. bending hair cells against the organ of Corti's tectorial membrane
d. putting pressure on Pacinian corpuscles
a
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Adaptations of mosses for life on land include
_____ delayed meiosis. _____ wind dispersal of gametes. _____ wind dispersal of spores. _____ enclosure of zygotes in the gametophyte. _____ enclosure of gametes in gametangia.
The cycad lineage probably arose from ____
a. club mosses b. seed ferns c. whisk ferns d. ginkgos e. palms
How many semicircular canals are in each organ of balance?
a. 2 b. 3 c. 4 d. 5 e. more than 6
Which process occurs during labor?
A) positive feedback involving oxytocin and prostaglandins B) negative feedback involving oxytocin and prostaglandins C) positive feedback involving estrogen and human chorionic gonadotropin D) negative feedback involving estrogen and human chorionic gonadotropin