Anatomy Exam 4 Study Guide Answers1. At the level at L1/L22. At the level of the intervertebral foramen3. 31 pairs4. Mixed nerves5. Negative feedback6. Pia Mater7. Epineurium8. Spinoreticular=sensoryCorticospinal=motorIf “spine” is the prefix, it is a sensory pathway. If “spine” is the suffix, it is a motor pathway9. Sciatic Nerve. (Spinal cord is not a nerve!)10. T- Reflex Arcs are unconscious actions11. T- Stretch Reflexes are unconscious actions (“knee jerk response”)12. Gamma and alpha motor neurons13. 4th ventricle14. Thalamus15. T- The spinal cord has an epidural space16. F- The brain has no epidural space, but there is a potential epidural space (blow to the head, trauma injury)17. Glucose and Oxygen18. The splitting of the Dura Mater19. Pupils dilate, blood leaves extremities, hair stands on end (arrector pili muscles), sweating, heart rate and respiratory rate increase, lipid release for energy20. The trochlear nerve is the only nerve that wraps dorsally around the brain stem21. Below the level of consciousness22. 5 Facial Nerve branches: temporal, zygomatic, buccal, mandibular, and cervical23. III, VII, IX, X (3, 7, 9, 10)24. T- Chronic Vegetative State is considered to be conscious25. The adrenal medulla acts as a distal sympathetic chain ganglia26. T- The sympathetic nervous response is a flood of neurotransmitters, making it an all-or-none response (parasympathetic is localized and specific)27. F- The sympathetic nervous system deals with NO digestive functions (parasympathetic does deal with digestive function)28. In the CNS, myelin is produced by oligodendrocytes. In the PNS, myelin is produced by Schwann cells29. The parasympathetic deals with erection, sympathetic with orgasm/ejaculation (“point and shoot”)30. Cholinergic31. Nociceptors32. VII, IX, X (7, 9, 10)33. Bony labyrinth has perilymph, membranous labyrinth has endolymph34. Malleus, Incus, Stapes(against the oval window)35. The Eustachian/auditory tube in babies is more vertical than in adults36. Depolarization in the ears results in the perception of sounds37. The blind spot is found where the optic nerve exits the