Will s Pre-Test for Exam IV

Transcription

1 Will s Pre-Test for Exam IV 1) The brain and spinal cord comprise the. (a) autonomic nervous system (b) peripheral nervous system (c) central nervous system (d) efferent nervous system (e) afferent nervous system 2) Which of the following lists the parts of a reflex arc in the correct order? (a) receptor, sensory neuron, interneuron, motor neuron, effector (b) receptor, effector, sensory neuron, interneuron, motor neuron (c) receptor, sensory neuron, effector, interneuron, motor neuron (d) effector, receptor, sensory neuron, interneuron, motor neuron (e) receptor, interneuron, sensory neuron, motor neuron, effector 3) The specialized membranes that protect the spinal cord are termed (a) meningitis (b) cranial mater (c) meninges (d) spinal mater (e) epidural membranes 4) T/F The Dark Current occurs when photoreceptors are intensely stiumulated by bright light 5) The part of the brain that functions to control skeletal muscles is the (a) medulla oblongata (b) cerebral cortex (c) midbrain (d) diencephalons (e) thalamus

2 6) Major centers concerned with autonomic control of breathing, blood pressure, heart rate, and digestive activities are located in the (a) medulla oblongata (b) pons (c) hypothalamus (d) diencephalons (e) cerebellum 7) The two cerebral hemispheres are separated by the (a) longitudinal fissure (b) central sulcus (c) lateral sulcus (d) frontal lobe (e) postcentral Sulcus 8) T/F During dark adaptation, photopigments are rapidly broken down by the absence of light 9) T/F Rods occur at high density in the fovea centralis, while cones are at high density outside the fovea. 10) The visual cortex is located in the (a) frontal lobe (b) parietal lobe (c) temporal lobe (d) occipital lobe (e) cerebellum

3 11) Regions of the brain that are involved in interpreting data or coordinating motor responses are (a) commissural areas (b) sensory areas (c) association areas (d) motor areas (e) processing areas 12) T/F Photopigments are composed of 2 parts: an opsin protein and various forms of rhodopsin 13) Overseeing the postural muscles of the body and making rapid adjustments to maintain equilibrium are functions of the (a) cerebrum (b) midbrain (c) cerebellum (d) pons (e) medulla 14) T/F A PET scan involves the application of a strong magnetic current to align H+ atoms in the body. 15) In which of the following would the delay between stimulus and response be greater? (a) a reflex that involves many synapses (b) a reflex that involves fewer synapses (c) they would be the same

4 16) Which of the following is NOT a function of the hypothalamus? (a) temperature regulation (b) thirst (c) hunger (d) postural reflexes (e) hormone production 17) T/F An fmri scan tracks blood flow within the patient in real time 18) T/F White light stimulates red and green cones, but NOT blue cones 19) T/F In darkness, photopigments function to keep Na+ channels open in the rods and cones. 20) Control of the viscera is the job of the (a) spinal cord (b) conscious control (c) brain (d) autonomic nervous system (e) all of the above

5 21) The area of the CNS most concerned with balance is the (a) spinal cord (b) thalamus (c) corticospinal (d) cerebellum (e) cerebrum 22) T/F During the transduction of salty taste sensations, H+ ions block K+ channels, preventing the efflux of K+ from the taste cell. 23) Alzheimer s disease (a) is the most common cause of senile dementia (b) is characterized by a progressive loss of verbal and reading skills (c) is characterized by a progressive loss of memory (d) is associated with the formation of plaques and neurofibrillary tangles in regions of the brain that are involved with memory (e) all of the above 24) Which of the following would be greater? (a) the heart rate when sympathetic neurons are stimulated (b) the heart rate when parasympathetic neurons are stimulated (c) they would be the same 25) Olfactory receptors are examples of (a) pain receptors (b) thermoreceptors (c) mechanoreceptors (d) chemoreceptors (e) proprioceptors

6 26) T/F Cones are unique in that they exhibit high light sensitivity and allow for the formation of sharp visual images 27) T/F When we performed the black and white checkerboard eye illusion in class, formerly white areas in your visual field turned black. This happened because the white areas of the checkerboard image intensely stimulated the rods in your retina. 28) The color receptors within the retina are sensitive to lights that are (a) red, blue, and green (b) red, green, and yellow (c) red, blue, and yellow (d) red, blue, green, and yellow (e) orange, green, and purple 29) A blind spot in the retina occurs where (a) the fovea is located (b) ganglion cells synapse with bipolar cells (c) the optic nerve attaches to the retina (d) rod cells are clustered to form the macula (e) amacrine cells are located 30) Rhodopsin is found in (a) rods (b) cones (c) visual pigments (d) sodium pumps (e) neurotransmitters

7 ANSWER KEY 1. C 2. A 3. C 4. F 5. B 6. A 7. A 8. F 9. F 10. D 11. C 12. F 13. C 14. F 15. A 16. D 17. T 18. F 19. T 20. D 21. D 22. F 23. E 24. A 25. D 26. F 27. F 28. A 29. C 30. A