BSC 1010 - General Biology I

Mammalian Nervous System

Reading Assignment: POHS Ch. 43: pp. 952-972

Self Quiz: 1 (sorta), 5

Applying Concepts: None.

Additional Thought Question:

Lecture outline:

Definitions
	central nervous system (CNS)
		nucleus / nuclei
		tracts
	peripheral nervous system
		nerves
		ganglion / ganglia

Information flow through the nervous system
	afferent - conscious and unconscious
	efferent - voluntary and involuntary
	relationship to endocrine system

Development of the CNS
	derived from neural tube
		brain - forms from 3 primary vesicles at rostral end
			forebrain
			midbrain
			hindbrain
		spinal cord

Derivatives of primary vesicles and their functions
	hindbrain
		medulla
		pons
		cerebellum - orchestrates and refines movements
	midbrain (mesencephalon)
	forebrain
		diencephalon
			thalamus 
			hypothalamus
		telencephalon (cerebrum)
			cerebral cortex

brain stem = medulla + pons + mesencephalon [+ diencephalon}
	contains tracts connecting spinal cord to cerebrum
	controls primitive and autonomic functions

Spinal cord
	white matter
	gray matter
		ventral horn
		dorsal horn
		interneurons
	spinal nerves
		ventral root
		dorsal roots

Cerebral cortex
	folded planar arrangement of gray matter
	mostly association cortex
	Left / right asymmetrical function (lateralization)
	lobes (bilateral)
		temporal 
			primary auditory cortex
			association areas 
		occipital lobe
			primary visual cortex
			association areas
		parietal lobe
			primary somatosensory cortex
			association areas
		frontal lobe
			primary motor cortex
			association areas

Topics not covered in lecture for which you will be responsible: