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BioPsychology Ch 3
Olivarria, Fall 2010
59
Psychology
Undergraduate 3
10/17/2010

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Cards

Term
Biopsychology
Definition
Biological approach to study of psychology
Term
Central Nervous System
Definition
Brain and Spinal Cord
Term
Peripheral Nervous System
Definition
Outside skull and spine
Term
Somatic Nervous System
Definition

PNS

interacts with outside environment

Term
Afferent
Definition

sensory function

carry sensory signals from outside--> in

Term
Efferent
Definition

motor function

carries motor signals from CNS --> muscles

Term
Autonomic Nervous System
Definition

PNS

regulates organs and glands

interacts with interal environment

Term
Sympathetic Nerves
Definition

efferent nerves

autonomic motor nerves

project from CNS

STIMULATE

Term
Parasympathetic Nerves
Definition

autonomic motor nerves

project from brain

efferent nerves

CONSERVE

Term
Cranial Nerves
Definition

12 pairs of nerves projecting from brain

Most contain sensory AND motor fibers

 

 

Term
Vagas
Definition

Parasympathetic

10th nerve

Slows down heart rate

Term
Meninges
Definition

3 protective membranes around brain/spinal cord

 

Bone-->Dura Mater-->Arachnoid-->Pia Mater

 

Term
Cerebral Spinal Fluid
Definition
  • protects CNS
  • fills subarachnoid, central canal of spinal cord, and cerebral ventricles in brain
  • produced in choroid plexus in lateral ventricles
Term
Cerebral Ventricles
Definition

4 large interal chambers of brain

Lateral, third, fourth

Term
Cerebral Aqueduct
Definition
Conects third ventricle to fourth
Term
Blood Brain Barrier
Definition

Endothelial cells tightly joined to one another that prevent molecules from passing into brain

 

Need because brain is only

organ that cannot regnerate cells

Term
Neuron
Definition

specialized cell consists of:

Body

Dendrites

Axon

Axon Hillock

Axon Terminal

Synaptic Button

Term
Soma
Definition
"Body" of neuron
Term
Dendrites
Definition

Short processes emanating form cell body

Receive most of synaptic contacts from other neurons

Term
Axon
Definition
"Tail" of neuron
Term
Axon Hillock
Definition
Where soma and axon meet
Term
Axon Terminal
Definition
End of axon tail
Term
Synaptic Button
Definition
Button shaped endings of branches off of axon terminal
Term
Cell Membrane
Definition
lipid bilayer w/ proteins embedded
Term
Myelin
Definition

fatty sheath that covers axon

squares along it

Term
Node of Ranvier
Definition
gaps in myelin
Term
Unipolar Neuron
Definition
neuron with one process extending from cell body
Term
Bipolar Neuron
Definition
Two axons from cell body
Term
Multipolar Neuron
Definition
more than two axons from soma
Term
Interneuron
Definition

Short or no axons from soma

Function: to integrate neural activity w/in single brain structure, not to conduct signals from one structre to another

Term
Macroglia
Definition

Oligodendrocites

Schwann Cells

Astrocytes

Term
Oligodendrocytes
Definition
Glia cells provide multiple myelin segments in CNS
Term
Schwann Cells
Definition
Glia that provide single myelin segment on axon in PNS
Term
Astrocytes
Definition
Glia cells that coat blood vessels in the brain in CNS
Term
Microglia
Definition

Engulf/remove cellurlar debris

Trigger inflammatory responses

Term
Golgi
Definition

Neuronanatomical technique that

reveals the structure of neurons

Term
Nissl Stain
Definition

Neuroanatomical technique

 

Stains cells, so we can get info about cell architecture and estimate number of neurons

Term
Electron Microscope
Definition
Provides details about neuronal structure
Term
Retrograde Transport
Definition

Anatomical Tracer

Tracing where axons are projecting INTO an area

Term
Anterograde Transport
Definition

Anatomical Tracer

tracing where axons project AWAY from an area

Term
Dorsal
Definition
Up!
Term
Ventral
Definition
Down!
Term
Posterior
Definition

Right

(back of head)

Term
Anterior
Definition

Left

(forward)

Term

Horizontal vs. Cross Section

Frontal vs. Sagittal Section

Definition
Term
3 Vesicles of CNS
Definition

Forebrain

Midbrain

Hindbrain

Term
Forebrain
Definition

Telencephelon

Diencephelon

Term
Midbrain
Definition
Mescencephelon
Term
Hindbrain
Definition

Metencephelon

Mylencephelon

Term
Spinal Cord
Definition
is the secret 6th of subdivisions
Term
Telencephelon
Definition

Cerebral Cortex: protects

Basil Ganglia: involved in voluntary movement

Term
Diencephelon
Definition

Hypothalamus: regulates motivated behaviors, controls pituitary gland

Thalamus: constitutes end of brain brain stem; sensory relay nuclei to cortex

Term
Mesencephalon
Definition

Tectrum: entirely visual

Coliculi: pairs of bumps in tectrum

Tegmentum: sensorimotor system

Term
Metencephelon
Definition

Pons: many tracts and part of reticular formation

Cerebellum: large convoluted structure on brain stem's dorsal surface-- important sensorimotor structure

Term
Mylencephelon
Definition

Reticular Formation: attn to movement

Medulla: breathing and heart rate

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