PSB 3002 Lecture 2: chapter 2 cont

• School: University of Florida
• Department: Psychobiology
• Course: PSB 3002
• Professor: Bethany Stennett

Document Summary

Structure and function of cells of the nervous system: chapter two. Sensory neurons: lights, sounds, odors, tastes. Motor neurons: responsible for movements of muscles. Inside the cns: local interneurons, relay interneurons. Parts of a neuron: soma: nucleus and machinery. Connect to other neurons and receive information: axon: covered in myelin sheath. Longest axon: spans from the foot to the base of the brain: terminal buttons. A(cid:374) a(cid:272)ti(cid:448)e pro(cid:272)ess that propels su(cid:271)sta(cid:374)(cid:272)es alo(cid:374)g (cid:373)i(cid:272)rotu(cid:271)ule (cid:862)tra(cid:272)ks(cid:863) that ru(cid:374) i(cid:374)side (cytoskeleton) the length of the axon: this process is different from the action potential. Anterograde axoplasmic transport: movement from the soma to the terminal buttons, a(cid:272)(cid:272)o(cid:373)plished (cid:271)y the ki(cid:374)esi(cid:374) (cid:373)ole(cid:272)ules: (cid:862)(cid:449)alks(cid:863) do(cid:449)(cid:374) the (cid:373)i(cid:272)rotu(cid:271)ules (cid:272)arryi(cid:374)g (cid:862)(cid:272)argo(cid:863) Energy from atp molecules made in the mitochondria: fast transport 500mm per day. Retrograde axoplasmic transport: movement from the terminal button to the soma, dyenin proteins, half the speed of anterograde. Membrane: skin of the neuron a bi-layer of lipid (fatlike) molecules.