Class notes
Anatomy and Phyisology
- Course
- BIO 221-02
- Institution
- University Of Massachusetts - Dartmouth
Lecture notes of 4 pages for the course BIO 221-02 at University Of Massachusetts - Dartmouth (Lecture 10 notes)
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A&P Lecture 11/18/2022Lecture exam 3: CH 11, 12, 13
CH 14 and 15 will be on final
Save the date: 12/5 (Monday) 6-8ish Anatomy Jeopardy
CH 13
PNS- Peripheral Nervous System
PNS- all neural structures outside the brain and spinal cord
includes:
sensory receptors (afferent information division, incoming)
Peripheral nerves (to CNS, from CNS) and associated ganglia (collection of cell bodies-
somas in the PNS)
motor (efferent) endings (outgoing)
PNS function: Provides links to/from external and internal environment
Sensory Division: Components (3 different)
receptor level: sensory receptors detect stimuli in the environment (outside and inside)
circuit level: neural pathways axonal tracts carry information to the CNS
preceptual level: cortical processing at cerebral cortex (where brain makes sense of incoming information)
Sensory Division: Sensory Receptors
Specialized to respond to changes in the environment (stimuli)
sensation is the detection of stimuli by sensory receptors
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