Brain lab Flashcards
What acts as a relay station for sensory information?
The thalamus
What releases hormones to help with homeostasis?
the pituitary gland
The floor of the midbrain passageway for fibers from the cortex to the spinal cord and vice versa is called the:
Cerebral peduncles
Between the 3rd and 4th ventricle
cerebral aqueduct
Reflex to sight
superior colliculus
Response to sound
inferior colliculus
along the calcarine sulcus
visual cortex
Networks of blood capillaries in the walls of the ventricles that produce cerebrospinal fluid
choroid plexuses
A white matter tract carrying information between the hemispheres
corpus callosum
carries corticospinal fibers and also contains nuclei of cranial nerves
pons
the dura mater in the brain has two layers
periosteal layer
meningeal layer
which structures seen in a coronal section of the brain are all white matter
corpus callosum
cerebral peduncles
internal capsule
What four “landmarks” visible on the lateral side of the human brain define the lobes
lateral fissure
preoccipital notch
end of parieto-occipital sulcus
central sulcus
The symptoms displayed by a patient with damage to the supramarginal and angular gyri would be
unable to understand reading and writing
A student views a plastinated RIGHT brain hemisphere from the lateral side, what would be visible to her
a) superior temporal gyrus
b) calcarine sulcus
c) midbrain
d) Broca’s area
e) the third ventricle
superior temporal gyrus
Which of the following landmarks does NOT serve as a boundary separating lobes of the human brain
a) Lateral fissure
b) Parieto-occipital sulcus
c) pre-occipital notch
d) central sulcus
e) calcarine sulcus
Calcarine sulcus
In the human brain, the gyrus containing the primary auditory cortex is:
superior temporal
The following pairs link function to structure. Which pair is incorrect?
a) primary somatosensory cortex- postcentral gyrus
b) Broca’s speech area-inferior frontal gyrus
c) primary motor cortex- precentral gyrus
d) primary visual cortex- superior frontal cortex
e) primary auditory cortex- superior temporal gyrus
primary visual cortex- superior frontal cortex
What separates the frontal lobe from the temporal lobe?
The lateral fissure
Which structure is involved in the production of cerebrospinal fluid or its flow through the brain, is closest to the midbrain
Cerebral aqueduct
A student studies a plastinated specimen of a human brain sectioned on the midline. Viewing the medial surface, all of the following would be visible except for the:
a) Calcarine sulcus
b) cerebral aqueduct
c) corpus callosum
d) tail of the caudate nucleus
e) temporal lobe
d)tail of the caudate nucleus
What are the structures found in the forebrain: superficial part of the hemispheres
Cortex Corpus callosum Parieto-occipital sulcus Calcarine sulcus Primary visual cortex
What are the structures found in the forebrain: basal ganglia of the hemispheres
Head of the caudate nucleus
What are the structures found in the forebrain: diencephalon
Thalamus
Hypothalamus
Pituitary gland
Third ventricle
What are the structures found in the midbrain?
superior and inferior colliculi
cerebral aqueduct
cerebral penduncles
The four CSF filled cavities within the brain are called the
ventricles
What are the structures found in the hindbrain?
cerebellum
pons
medulla
fourth ventricle
What are the three basic functions of CSG?
mechanical
homeostatic
circulation
Diencephalon is superior to the
brain stem
The ___ ____ separates the two hemispheres of the cerebrum
falx cerebri
The ____ ____ separates the two hemispheres of the cerebellum
falx cerebelli
There is one ____ ventricle in each hemisphere of the cerebrum
lateral
_____ ____ is a clear colourless liquid composed of primarily water that protects the brain and spinal cord from chemical and physical injuries
Cerebrospinal fluid
The ____ ventricle is a narrow slit-like cavity along the midline superior to the hypothalamus and between the right and left halves of the thalamus
third
The ____ ventricle lies between the brain stem and the cerebellum
fourth
Name the structures of the forebrain
Cortex corpus callosum Parieto occipital sulcus Calcarine sulcus primary visual cortex Basal Ganglia Diencephalon (Thalamus, hypothalamus, pituitary, third ventricle)
Name the structures of the midbrain
The superior colliculus The inferior colliculus Cerebral aqueduct Cerebral peduncles substantia nigra
What are the functions of the midbrain structures?
S - reflex response to sight
I - reflex response to sound
The cerebral peduncles convey corticospinal and corticopontine fibres. White matter.
The cerebral aqueduct conveys cerebrospinal fluid from the third ventricle to the fourth ventricle.
What are the functions of the hindbrain structures?
Cerebellum controls balance and coordinates movement.
Pons and medulla contain corticospinal fibres, nuclei of cranial nerves.
Medulla is involved in control of the CV and respiratory systems.
What is the function of the cingulate gyrus?
Involved in the limbic system, and the emotions.
Describe the position of the central and peripheral primary visual cortex relative to one another.
of the central and peripheral primary visual cortex’s relative to one another.
The primary visual cortex is on the occipital pole of the brain. Central vision is focused around the occipital pole, and peripheral vision is housed deeper into the occipital lobe.
Name the 4 secondary language association areas
Wernickes area (comprehension)
Broca’s area (motor control of larnyx and tongue for speech production)
Exener’s area (motor control of hands for writing)
Supramarginal and angular gyri (reading and writing abilities respectively)
