Practical #1 Flashcards
Describe the function of an Astrocyte
stimulate capilaries in the brain to form the blood-brain barrier
Describe the function of an Ependymal Cell
line the ventricles of the brain and secrete CSF
Describe the function of an Oligondendrocyte
increase the speed of neural transmission
Describe the function of a Microglial Cell
Brains immunocompetent cells
Describe the function of a Neurolemmocyte
inscrease transmission speed of the neuron
The Nucleus is found in what specific part of the Neuron?
Cell body/soma
What are the 3 main parts of a Neuron?
Axon
Dendrite
Neve Cell Body (neurosoma)
What kind of Neuron has a soma with a dendrite on one side and an axon on the other?
Bipolar Neuron
What kind of Neuron has multiple dendrites on one side, and an axon on the other?
Multipolar Neuron
Myelin is made up of what?
lipoprotein
What is the function of Neurons?
transmit signals
What is the function of Neuroglia?
assist transmission
- Dendrite
- Neuron Cell Body (soma)
- Nucleus
- Myelin Sheath (individual=Schwann Cells)
What are the 3 types of Neurons?
Multipolar
Bipolar
Unipolar
Pyramidal Cells
Cerebral cortex of the brain, amygdala, and hippocampus
extensive dendritic branches
cognition
Purkinje Cells
Occure in grey matter of cerebellum
larger extensive dendrites (than pyramidal cells)
role: largley an inhibitor
What “landmark” goes from the front of the brain, to the back, down the middle and seperates the two hemispheres?
Longitudinal Fissure
what are the Two main classes of senses?
General Senses (somesthetic)
Special Senses
What is Punctuate Distribution?
Uneven distribution of sense receptors throughout the body
What are the types of Modalities?
light
heat
sound
pressure
specific chemicals
What are photoreceptors?
detect light
what are Thermoreceptors?
detect changes in temperature
what are Proprioceptors?
detect changes in position of the body and in tension
what are Mechanoreceptors?
receptors that are receptive to mechanical stimuli (touch, hearing)
What are Baroreceptors?
respond the changes in blood pressure
what are Chemoreceptors?
respond to changes in the chemical environment
what types of receptor is responisve to extremely hot sensations?
Nocireceptors
What responds to light touch sensations?
Meissner’s Corpuscles
What is the sensation called when you have pain in one are of the body, but you feel it in another area?
Referred Pain
What are the primary tastes?
Sweet
Sour
Salty
Bitter
Umami
What region of the brain is receptive to smell stimuli?
Olfactory Epithelium
