Pns Study Guide
PNS Study Guide
CH. 13
PNS 1 Notes:
From Sensation to perception • 3 levels of integration of sensation- receptor, circuit, perceptual o What happens with the processing at each level
Sensory Receptors • Classifications: o Stimulus-mechanoreceptor, thermoreceptor, chemoreceptor, photoreceptor, nociceptor o Location- exteroceptor, interoceptors, proprioceptors o Complexity- simple, complex • Adaptation of receptors
PNS 2 Notes (Nerves):
Structure of a nerve • Endoneurium, perineurium, epineurium
Classification (functional) of nerve • Sensory (afferent), motor (efferent), mixed (association)
Cranial Nerves • How many pairs?
Spinal Nerves • How many pairs? • Where do they arise from? • Roots-dorsal and ventral • Rami & plexuses and where they serve • Labeling: Be able to label a cross section of the Spinal cord (see Quiz PNS 1): ventral, lateral and dorsal horn, dorsal root ganglion, ventral root, central canal
Reflexes
• Steps of a reflex arc • Labeling: Label the 5 steps of an arc from a picture (see Quiz PNS 2)
CH. 15
Vision and The Eye Notes:
Accessory structures- eyelids, eyelashes, conjuctiva, lacrimal apparatus • Be able to describe the path that tears take (know glands that secrete, ducts traveled through and final drainage location)
Extrinsic muscles- • Know there are 6 responsible for moving the eye and maintaining its shape
Structure of the eyeball • Tunic layers-fibrous, vascular, sensory o Fibrous= sclera, cornea o Vascular= choroid, ciliary body, iris (includes pupil) o Sensory-pigment layer, photoreceptors (rods & cones) • Neural Pathway o Be able to describe how sensory info comes in and is integrated into visual cortex • Chambers and Fluids • Labeling: Be able to label the following on a diagram (See PNS Ws): sclera, cornea, iris, pupil, optic nerve, lens,
CH. 13
PNS 1 Notes:
From Sensation to perception • 3 levels of integration of sensation- receptor, circuit, perceptual o What happens with the processing at each level
Sensory Receptors • Classifications: o Stimulus-mechanoreceptor, thermoreceptor, chemoreceptor, photoreceptor, nociceptor o Location- exteroceptor, interoceptors, proprioceptors o Complexity- simple, complex • Adaptation of receptors
PNS 2 Notes (Nerves):
Structure of a nerve • Endoneurium, perineurium, epineurium
Classification (functional) of nerve • Sensory (afferent), motor (efferent), mixed (association)
Cranial Nerves • How many pairs?
Spinal Nerves • How many pairs? • Where do they arise from? • Roots-dorsal and ventral • Rami & plexuses and where they serve • Labeling: Be able to label a cross section of the Spinal cord (see Quiz PNS 1): ventral, lateral and dorsal horn, dorsal root ganglion, ventral root, central canal
Reflexes
• Steps of a reflex arc • Labeling: Label the 5 steps of an arc from a picture (see Quiz PNS 2)
CH. 15
Vision and The Eye Notes:
Accessory structures- eyelids, eyelashes, conjuctiva, lacrimal apparatus • Be able to describe the path that tears take (know glands that secrete, ducts traveled through and final drainage location)
Extrinsic muscles- • Know there are 6 responsible for moving the eye and maintaining its shape
Structure of the eyeball • Tunic layers-fibrous, vascular, sensory o Fibrous= sclera, cornea o Vascular= choroid, ciliary body, iris (includes pupil) o Sensory-pigment layer, photoreceptors (rods & cones) • Neural Pathway o Be able to describe how sensory info comes in and is integrated into visual cortex • Chambers and Fluids • Labeling: Be able to label the following on a diagram (See PNS Ws): sclera, cornea, iris, pupil, optic nerve, lens,