KINE 2P09 Lecture Notes - Lecture 2: Cerebrospinal Fluid, Excitatory Postsynaptic Potential, Receptive Field
9 May 2018
School
Department
Course
Professor
KINE 2P09
Action Potential
- cell to cell communication
- cause a release of chemical messenger
Neurons
- Afferent = sensory, towards CNS
- Efferent = from CNS towards muscles, glands
- Interneurons = connect neurons within the CNS, majority of neurons in your body
- Glial cells = support the neurons
Graded Potentials
- EPSP excitatory postsynaptic potential
o Causes depolarization
o Moves towards threshold
- IPSP Inhibitory postsynaptic potential
o Causes hyperpolarization
o Moves away from causing action potential
Neurotransmitters
- acetylcholine
o nicotinic receptor: motorneurons, opens Na+ channels
o muscarinic receptor: effects on target cells
- biogenetic amines
o catecholamines
o alpha beta
o SNS
- Amino acids
- Neuropeptides
o 2 or more amino acids
Thalamus
- regulates input to cortex
Hypothalamus
- hormone secretion
Spinal Cord
- brain to periphery (eff)
- periphery to brain (aff)
Spinal Nerve
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Document Summary
Action potential cell to cell communication cause a release of chemical messenger. Efferent = from cns towards muscles, glands. Interneurons = connect neurons within the cns, majority of neurons in your body. Epsp excitatory postsynaptic potential: causes depolarization, moves towards threshold. Ipsp inhibitory postsynaptic potential: causes hyperpolarization, moves away from causing action potential. Acetylcholine: nicotinic receptor: motorneurons, opens na+ channels, muscarinic receptor: effects on target cells. Biogenetic amines: catecholamines, alpha beta, sns. Neuropeptides: 2 or more amino acids. Dorsal roots and ganglia = afferent ventral = efferent. Cerebrospinal fluid subarachnoid space is the space between the skull and the brain tissue. Meninges line this space and are filled with fluid circulates, cushions, and protects fragile tissue. Endothelial cells that line blood vessels in the brain filter molecules. Efferent: somatic, motor neurons, conscious, autonomic, parasympathetic nervous system, sympathetic nervous system afferent sensory. Dorsal roots, periphery to cns receptive field to detect changes in external environment.
