Which back muscle connects vertebrae to each other and helps maintain posture?
A. Splenius capitis
B. Longissimus
C. Multifidus
D. Quadratus lumborum
E. Semispinalis
C. Multifidus
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Giada experienced damage to a sensory neuron in the PNS. Which neuron sustained damage?
A) interneuron B) first-order neuron C) second-order neuron D) third-order neuron
The ________ flexes your knee.
A. quadriceps femoris B. biceps brachii C. hamstring group D. gluteus maximus
The mechanism of contraction in smooth muscle is different from skeletal muscle in that ________.
A) actin and myosin interact by the sliding filament mechanism B) the trigger for contraction is a rise in intracellular calcium C) the site of calcium regulation differs D) ATP energizes the sliding process
Collateral pathways take vestibular receptor signals from the medulla to the
A) thalamus and reticular formation. B) cerebellum only. C) reticular formation and cerebellum. D) reticular formation only. E) thalamus only.