Lecture 2 Flashcards
(42 cards)
What are the 4 visible cerebral lobes in the forebrain?
Frontal lobe
Parietal lobe
Temporal lobe
Occipital lobe
Describe where the primary motor cortex is.
In the frontal lobe on the precentral gyrus near the central sulcus.
What divides the frontal lobe and parietal lobe?
Central gyrus
Where is the primary somatosensory cortex located?
On the postcentral gyrus of the parietal lobe
What central cortex is found in the temporal lobe?
Primary auditory cortex A1
What divides the frontal/parietal lobe from the temporal lobe?
lateral sulcus
What can be an indicator that the occipital lobe lies just beyond?
Preoccipital notch
What primary motor cortex is housed in the occipital lobe?
Primary visual cortex V1
What lobe does the limbic lobe not touch?
Occipital
What 2 lobes are not visible to the eye?
Limbic lobe
Insular lobe
What are the contralateral body controls of the L hemisphere?
Right field vision
Right motor skills
Somatotopy
Body part presentation along M1 S1
What are the contralateral body controls of the R hemisphere?
Left field vision
Left motor skills
S1 does not follow the homunculus strictly. T/F
False
What are glia described as?
supportive function
What are the 4 Glia found in the CNS?
Astrocytes
Oligodendrocytes
Microglia
Ependymal cells
M1 has limited representation along the homunculus, what are the 3 important parts?
Hands
Feet
Tongue
What are neurons described as?
Functional units
what are the two types of astrocytes?
what do they do?
PA: Directly extract the nutrients from capillary arteries
FA:
What do the Oligodendrocytes do?
OL: Secrete myelin sheath covering more than one axon of the neuron.
What do Microglia do?
M: immune cells that pick up waste and digests it.
What do Epidermal cells do?
E: they are found only in the ventricular system and actively secrete CSF.
What neurons are located in the PNS?
Where are they developed?
DRG
AG
Both developed in the neural crest
A neuron has how many cell bodies(soma)?
1
