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Name:__________________________ Psych 260-­‐ Quiz 2 (With the exception of the last question, each question is worth 1 pt. Write your answers for the last question directly on the quiz, and hand it in along with your scantron. Be sure to put your name on both the scantron and your quiz!) 1. From right on top of the cerebral cortex to the skull, which is the correct order of the three meninges that protect the brain? a. Dura mater, Arachnoid membrane, Pia Mater b. Pia mater, Dura Mater, Arachnoid Membrane c. Pia Mater, Dorsa mater, Arachnoid Membrane d. Pia Mater, Arachnoid membrane, Dura Mater e. Arachnoid membrane, Dura Mater, Pia Mater 2. A _______ is a “bulge” located between adjacent grooves in the surface of the human cortex. a. Ventricle b. Fissure c. Sulcus d. Gyrus e. Cerebral aqueduct 3. Which region of the brain best distinguishes humans from other animals? a. Reticular formation. b. Cerebral cortex. c. Limbic system. d. Cerebellum. e. Amygdala. 4. Which of the following adjectives describes this view of the brain? Lateral Sagittal Coronal Ventral Dorsal 5. Another term for “rostral” is a. Inferior b. Superior c. Anterior d. Lateral e. Medial a.
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6. Separated by the central sulcus, the motor cortex is adjacent to the ______, while the sensory cortex is adjacent to the _______. a. Frontal lobe, Parietal lobe b. Temporal lobe, Parietal lobe c. Frontal lobe, Cerebellum d. Thalamus, Cerebellum e. Thigh bone, hip bone 7. Which of the following sensory systems show ipsilateral organization? a. Vision and audition b. Audition only c. Vision and pain perception d. Olfaction e. Somatosensory 8. Which of the cortical lobes is primarily responsible for judgments and decision making? a. Occipital b. Frontal c. Temporal d. Insular e. Parietal 9. __________ nerve fibers send their information towards the brain. a. Afferent b. Efferent c. Projection d. Somatic e. Apolar 10. In its resting state, a neuron is said to be a. Polarized b. Depolarized c. Hypopolarized d. Hyperpolarized e. Sleepy 11. The brief period of time immediately after the initiation of an action potential when it is impossible to initiate another one in the same neuron is called the a. Threshold of excitation b. Threshold of inhibition c. IPSP d. Relative refractory period e. Absolute refractory period 12. Astrocytes perform which of the following functions? a. Physical support of nerve cells b. Provision of nutrients to neurons c. Clean up debris within the brain d. Regulation of the chemical environment in the fluid surrounding neurons e. All of the above 13. In one cycle of neural communication, which is the correct order of events? a. Neurotransmitter release -­‐> action potential -­‐> threshold of excitation reached -­‐> inhibitory or excitatory post-­‐synaptic potential b. Threshold of excitation reached -­‐> action potential -­‐> neurotransmitter release -­‐> inhibitory or excitatory post-­‐synaptic potential c. Threshold of excitation reached -­‐> neurotransmitter release -­‐> action potential -­‐> inhibitory or excitatory post-­‐synaptic potential d. Threshold of excitation reached -­‐> Inhibitory or excitatory post-­‐synaptic potential -­‐> neurotransmitter release -­‐> action potential e. Action potential -­‐> threshold of excitation reached -­‐ > neurotransmitter release -­‐> inhibitory or excitatory post-­‐synaptic potential 14. The ________ and _________ are important because they are involved in the myelination of nerve axons. a. Oligodendrocytes and microglia b. Astrocytes and Schwann cells c. Oligodendrocytes and Schwann cells d. Microglia and astrocytes e. Mitochondria and Microglia 15. The giant squid axon is specialized for which of the following? a. Integration of sensory messages regarding the environment b. Planning of feeding-­‐related movements c. Rapid contraction of the squid mantle which propels the squid away from danger d. Coordination of general sensory-­‐motor function e. Contraction of the mouth of the squid to produce chewing movements 16. Name the parts of the neuron. (5 pts.) Axon hillock Cell Body Dendrites Dendrites:
Receive signals from other axon Nucleus Myelin sheath Node of Ranvier