BIO1011 WEEK 9 QUIZ SOUTH UNIVERSITY. Graded A

Grading Summary These are the automatically computed results of your exam. Grades for essay questions, and comments from your instructor, are in the "Details" section below. Grade Details - Al l Questions Student Answer: True False 5. Question : At the optic chiasm Student Answer: axons from the retinae synapse on those from the other half. axons from the temporal halves of each retina cross. axons from the nasal halves of each retina cross. both A and C both B and C 6. Question : Damage to the preoptic area of the hypothalamus leads to which problem? Student Answer: production of a large volume of urine an intense thirst an insatiable appetite reduced ability to regulate body temperature an uncontrolled sex drive 7. Question : In relation to the medial and lateral pathways, the pathway controls movements of trunk and limb muscles. Student Answer: lateral; precise; distal medial; fine; distal lateral; gross; distal medial; gross; distal medial; gross; proximal 8. Question : Cerebrospinal fluid enters the subarachnoid space through the Student Answer: falx cerebri. interventricular foramina. dural sinus. lateral and median apertures. aqueduct of Sylvius. Points Received: 1 of 1 Comments: 9. Question : The corpus callosum is composed of Student Answer: commissural fibers. arcuate fibers. association fibers. longitudinal fasciculi. projection fibers. 10. Question : The adult human brain contains almost of the body's neural tissue. Student Answer: 25 percent 68 percent 15 percent 97 percent none of the above 11. Question : The dural sinuses are located in the Student Answer: pia mater. tentorium cerebelli. paranasal cavity. dural folds. arachnoid. 12. Question : There are pairs of cranial nerves. Student Answer: 13. Question : Figure 14-1 The Circulation of Cerebrospinal Fluid Use Figure 14-1 to answer the following questions: What is produced by the structure labeled "2"? Student Answer: white matter neurotransmitters cerebrospinal fluid hormones B and D Comments: 14. Question : Which of the following lies between the cerebrum and the brain stem? Student Answer: medulla oblongata diencephalon mesencephalon pons cerebellum 15. Question : Figure 15-2 The Corticospinal Pathway Use Figure 15-2 to answer the following questions: What occurs in this neural pathway at label "3"? Student Answer: decussation autonomic reflexes synapse communication between sensory and motor neurons amplification of motor signals 16. Question : A receptor potential may Student Answer: be a hyperpolarization. be a depolarization. decrease neurotransmitter release. increase neurotransmitter release. be any of the above 17. Question : Examples of sensory modalities include Student Answer: smell. warmth. vibration. touch. all of the above 18. Question : The corticospinal system is often referred to as the Student Answer: pyramidal system. spinothalamic tracts. red nucleus. medullary centers. reticular formation