Ques:Answer the following question given this paragraph: The trigeminal pathway carries somatosensory information from the face, head, mouth, and nasal cavity. As with the previously discussed nerve tracts, the sensory pathways of the trigeminal pathway each involve three successive neurons. First, axons from the trigeminal ganglion enter the brain stem at the level of the pons. These axons project to one of three locations. The spinal trigeminal nucleus of the medulla receives information similar to that carried by spinothalamic tract, such as pain and temperature sensations. Other axons go to either the chief sensory nucleus in the pons or the mesencephalic nuclei in the midbrain. These nuclei receive information like that carried by the dorsal column system, such as touch, pressure, vibration, and proprioception. Axons from the second neuron decussate and ascend to the thalamus along the trigeminothalamic tract. In the thalamus, each axon synapses with the third neuron in its respective pathway. Axons from the third neuron then project from the thalamus to the primary somatosensory cortex of the cerebrum. The sensory pathway for gustation travels along the facial and glossopharyngeal cranial nerves, which synapse with neurons of the solitary nucleus in the brain stem. Axons from the solitary nucleus then project to the ventral posterior nucleus of the thalamus. Finally, axons from the ventral posterior nucleus project to the gustatory cortex of the cerebral cortex, where taste is processed and consciously perceived. The sensory pathway for audition travels along the vestibulocochlear nerve, which synapses with neurons in the cochlear nuclei of the superior medulla. Within the brain stem, input from either ear is combined to extract location information from the auditory stimuli. Whereas the initial auditory stimuli received at the cochlea strictly represent the frequencyor pitchof the stimuli, the locations of sounds can be determined by comparing information arriving at both ears. Q: Which pathway carries somatosensory information from the face, head, mouth, and nasal cavity? Choices: - posterior pathway - dual pathway - cranial pathway - trigeminal pathway A:

Ans:trigeminal pathway
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Ques:Answer the following question given this paragraph: Birds are thought to have evolved from theropod dinosaurs around 150 million years ago. Q: Birds are thought to have evolved around 150 million years ago from what? Choices: - teradactils - raptor dinosaurs - parrot dinosaurs - theropod dinosaurs A:

Ans:theropod dinosaurs
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Ques:Answer the following question given this paragraph: Arachnids also have two additional pairs of appendages. The first pair, the chelicerae , serve in feeding and defense. The next pair, the pedipalps , help the organisms feed, move, and reproduce. Q: What class of invertebrate animals has additional appendages called the chelicerae and the pedipalps? Choices: - fish - arthropod - mammals - arachnid A:

Ans:arachnid
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Ques:Answer the following question given this paragraph: It can be really exciting to explore a big underground cave like the one in this picture. Do you know how caves form? Believe it or not, water is the answer. Water slowly dissolves rocks, especially certain types of rocks such as limestone. How does something as mild and harmless as water cause hard rocks to dissolve? In this chapter, you'll find out. Q: Caves form over time when what causes rocks like limestone to dissolve? Choices: - weather - acid - air - water A:

Ans:
water
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