PSYC 342 Lecture Notes - Lecture 3: Somatic Nervous System, Peripheral Nervous System, Autonomic Nervous System

• School: McGill University
• Department: Psychology
• Course: PSYC 342
• Professor: Annie Duschesne

Document Summary

Anatomical positioning is based on quadrupeds (walks on four. Caudal or posterior (towards tail) and rostral or anterior (towards legs) head) Lateral (from in outwards) and medial (from out inwards) Looks different for humans because we don"t walk on four legs so, for example, ventral is the bottom of the brain and the front of the spine (towards our stomachs) Ipsilateral (same side) and contralateral (crosses over to other side) Coronal (ear to ear on the anterior posterior plane) Sagittal (from nose to the back of the head, mid-sagittal=cut between hemispheres) T10 (most inferior) t2 c5 c1 (most superior) At c1 there are the most afferent axons (amount of info travelling through cns increases as you get closer to the brain from the bottom of the spinal cord) so there is more white matter. If you damage c1 there is a lot more damage then if it"s at t10. Somatic nervous system: motor neurons etc. (external e. g. throwing a ball)