nervous system chapter 49. organization correlates w/ lifestyle – sessile molluscs w/ simple –...
Post on 21-Dec-2015
216 views
TRANSCRIPT
![Page 1: Nervous System Chapter 49. Organization correlates w/ lifestyle – Sessile molluscs w/ simple – Complex molluscs w/ complex Nerve net is connected nerve](https://reader031.vdocuments.mx/reader031/viewer/2022032704/56649d6c5503460f94a4b626/html5/thumbnails/1.jpg)
Nervous System
Chapter 49
![Page 2: Nervous System Chapter 49. Organization correlates w/ lifestyle – Sessile molluscs w/ simple – Complex molluscs w/ complex Nerve net is connected nerve](https://reader031.vdocuments.mx/reader031/viewer/2022032704/56649d6c5503460f94a4b626/html5/thumbnails/2.jpg)
• Organization correlates w/ lifestyle– Sessile molluscs w/ simple– Complex molluscs w/ complex
• Nerve net is connected nerve cells– Cnidarians to regulate gastrovascular cavity
• Nerves are bundles of nerve cells– Echinoderms w/ branched nerve nets– Bilateral animals w/ cephalization– Platyhelminthes w/ CNS– Arthropods and annelids w/ ganglia– Vertebrates w/ CNS and PNS
Comparative Nervous Systems
![Page 3: Nervous System Chapter 49. Organization correlates w/ lifestyle – Sessile molluscs w/ simple – Complex molluscs w/ complex Nerve net is connected nerve](https://reader031.vdocuments.mx/reader031/viewer/2022032704/56649d6c5503460f94a4b626/html5/thumbnails/3.jpg)
Vertebrate Nervous Systems
Nervous System
Central Nervous System (CNS)
Brain Spinal Cord
Peripheral Nervous System (PNS)
Motor (efferent)
Autonomic(involuntary)
Sympathetic Parasympathetic
Somatic
(voluntary)
Sensory (afferent)
![Page 4: Nervous System Chapter 49. Organization correlates w/ lifestyle – Sessile molluscs w/ simple – Complex molluscs w/ complex Nerve net is connected nerve](https://reader031.vdocuments.mx/reader031/viewer/2022032704/56649d6c5503460f94a4b626/html5/thumbnails/4.jpg)
Cerebral Hemispheres
• Demonstrate lateralization– Left: math, speech, concrete processing, logic– Right: creativity, facial and pattern recognition
• Contralateral control• Corpus callosum communicates• 4 lobes
http://faculty.washington.edu/chudler/split.html
![Page 5: Nervous System Chapter 49. Organization correlates w/ lifestyle – Sessile molluscs w/ simple – Complex molluscs w/ complex Nerve net is connected nerve](https://reader031.vdocuments.mx/reader031/viewer/2022032704/56649d6c5503460f94a4b626/html5/thumbnails/5.jpg)
Cerebral Lobes• Frontal
– Reasoning, planning, personality, problem solving– Process emotional and painful info– Voluntary mov’t– Learned planned activities
• Parietal (2)– Sensory information– Integrating sensory and motor
• Temporal (2)– Auditory senses and memory– Broca’s and Wernicke’s area (left)
• Occipital– Visual information
![Page 6: Nervous System Chapter 49. Organization correlates w/ lifestyle – Sessile molluscs w/ simple – Complex molluscs w/ complex Nerve net is connected nerve](https://reader031.vdocuments.mx/reader031/viewer/2022032704/56649d6c5503460f94a4b626/html5/thumbnails/6.jpg)
Other Brain Anatomy
• Olfactory bulb• Brainstem
– Hindbrain• Basic life processes
– Respiration– Heart rate– Emesis
• Cerebellum– Coordination and balance– Proprioceptive input
– Midbrain• React to visual and auditory stimuli• Optic lobes in non-mammal vertebrates
– Reticular formation
![Page 7: Nervous System Chapter 49. Organization correlates w/ lifestyle – Sessile molluscs w/ simple – Complex molluscs w/ complex Nerve net is connected nerve](https://reader031.vdocuments.mx/reader031/viewer/2022032704/56649d6c5503460f94a4b626/html5/thumbnails/7.jpg)
• Relative brain size– Animals– Male/female
• Cerebral cortex– Cortical folding– Mammals increase association
areas• Complex behavior and learning
• Cerebellum– Cat/dog
• Olfactory bulb• Limbic system w/avoidance
Comparative Brain Anatomy
![Page 8: Nervous System Chapter 49. Organization correlates w/ lifestyle – Sessile molluscs w/ simple – Complex molluscs w/ complex Nerve net is connected nerve](https://reader031.vdocuments.mx/reader031/viewer/2022032704/56649d6c5503460f94a4b626/html5/thumbnails/8.jpg)
Arousal and Sleep
• Reticular formation– Sensory filter for info into cerebral cortex
• More info = more alert• Selective attention
– LSD, sleep, alcohol inhibits• Pineal gland w/ melanin
– From 5-HT from tryptophan– Peak at night– Signal sleep stimulate areas
• Essential for survival• Dolphins 1 hemisphere at a time