09/13 Flashcards
What is the pain neuron?
Free nerve endings
What is the most important sensory neuron for us?
free nerve endings
What is adaptation of the sensory neurons?
The resetting of the neurons to a “new normal”
What is reverse adaptation in a neuron?
When a stimulus becomes stronger over time instead of us getting used to it. This happens in pain.
Why should you take prescribed pain mediations after surgery?
Because Nociceptors have reverse adaptation
How can you prevent a pain response?
By blocking the nerves
Superior
up
inferior
down
dorsal
back
ventral
front
Anatomical positions are named based on what position of a body?
standing facing you with palms facing forward
anterior
frontp
posterior
back
medial
towards the middle
lateral
away form the middle
rostral
Front and towards the top
Caudal/Caudad
down and towards the rear
distal
away from CNS
Proximal
Towards the CNS
Sagittal
separates the left and right sides
coronal
separates the front from back
Horizontal
separates the top from the bottom
Oblique
an odd angle separating 2 parts
Telencephalon
Outer part of the brain
Diencephalon
Inner part of the brain
The diencephalon serves as the connecting point between
The cerebral hemispheres and the brain stem
What is found in the telencephalon?
Cerebral cortex
Commisurals
basal ganglia
What makes up the cerebral cortex?
cerebral hemispheres or lobes
What is located in the diencephalon?
Thalamus
hypothalamus
Hypothalamus is where in relation to the thalamus?
Underneath or deep
What is the thalamus important for?
It’s an important relay center between the cerebral hemispheres and the brain stem and the rest of the body
The hypothalamus is super important for a
lot of critical functions within the body including
Sensory
control center for a lot of things
Where are osmoreceptors found?
in the hypothalamus
What are the receptors found in the hypothalamus?
infection sensors
body temperature sensors
osmoreceptors
Where is the brain stem located?
right below the diencephalon
What are the 3 parts of the brainstem?
midbrain
pons
medulla oblongata
What is another name for the midbrain?
mesencephalon
what does the pons look like?
an olive
What is a groove named on the brain?
sulcus
What is beneath the medulla oblongata?
The cord
What is the difference between a sulcus and a fissure?
fissure is a deep groove
sulcus is not a deep groove
What are the lumps of tissue called on the brain between the sulci?
Gyrus
What is the multiple of a gyrus?
gyri
What are gyri made of?
lumps of neurons and supporting tissue
What are the 4 major lobes of the brain?
Frontal
parietal
occipital
temporal
Where do we do most of our thinking?
Frontal lobe
What is right behind the frontal lobe?
parietal lobe
What is the parietal lobe?
the primary somatosensory cortex
This is where majority of sensations are processed
Where is the occipital lobe and what does it do?
In the rear of the brain
It is where vision is processed
“the primary visual cortex”
Where is the temporal lobe?
The lateral side of the brain right next to where our ears are
What does the temporal lobe do?
It processes stuff that we hear
language comprehension
listening to music
What separates the frontal lobe and the parietal lobe?
a very very deep groove called the central sulcus
What is the main anatomical marker when you are dissecting a human brain?
the central sulcus
Which deep groove is beneath the central sulcus?
The temporal lateral fissure
What does the temporal lateral fissure separate?
the temporal lobe from the frontal lobe and the parietal lobe
What runs down the sagittal plane and separates the left and right cerebral hemispheres?
The longitudinal fissure. It runs from the front of the brain to the back
Label this image
Label this image
Label the yellow and blue highlighted sections
Yellow: Motor Cortex
Blue: Sensory Cortex
Label this image including the highlighted sections
Yellow: Longitudinal Fissure
Blue: temporal lateral fissures
Red: Corpus Callosum
Green: deep brain structures including the diencephalon
What is limiting the right side of the brain from talking to the left side of the brain?
the longitudinal fissure separates most of the brain leaving only a small amount of space for a continual structure called the corpus callosum for information to pass from one side to the other
What structure has to be cut in order to view when cutting the brain in a sagittal cross section?
The Corpus callosum
Why is the corpus callosum a different color when cut sagittaly?
There are a lot of myelinated neurons
What is the specific area in the temporal lobe where language comprehension and intelligence is taken care of?
Wernicke’s area
Why is the Broca’s area found in the frontal lobe?
Because we have to think about what we are going to say, and the action of talking is a Motor function both of which are found in the frontal lobe
What is the part of the brain where we think about what we’re going to say, controlling our voice box and respiratory system?
Broca’s Area
Where is the motor cortex located?
The most posterior part of the frontal lobe, anterior to the central sulcus
It is the pre-cetentral gyrus
Where is the Samatosensory area located?
Anterior gyrus of the parietal lobe
post central gyrus
What is the limbic system responsible for?
Developing emotional responses to things that are happening around them
Where is the limbic system?
Temporal lobe AND also widespread throughout a number of areas in the brain