Ch 7: The Structure Of The Nervous System Flashcards
Forebrain (prosencephalon)
Is a primary vesicle that is in control of perceptions conscious awareness, cognition, and voluntary action
Cerebral cortex
Most important structure in the forebrain
Cortical neurons receive what
Sensory information, form perceptions of the outside world, and common voluntary movements
Neurons located in the ____ receive information from. Ella that sense chemicals in the nose and relay information causally to a pet of the cerebral cortex for analysis
Olfactory bulbs
How do the thalamic neurons send axons to the cortex?
Via internal capsule
Damage to the basis ganglia causes what?
Disrupts the ability to initiate voluntary movement
What does the hypothalamus do?
Controls the visceral (autonomic) nervous system
What does the visceral (autonomic) nervous system do?
Regulate bodily functions in response to the needs of the organisms.
What are the white matter structures?
Corpus callosum, cortical white matter and internal capsule
What does the corpus callosum do?
It is continuous with the cortical white matter and forms an axonal bridge which links cortical neurons of white matter and forms an axonal bridge that links cortical neurons of the two cerebral hemispheres
What is the cortical white matter?
It contains all the axons that run to and from the neurons in the cerebral cortex
How much does the midbrain differentiate?
It differentiates relatively during Brian development
What does the dorsal surface of the mesencephalic vesicle become?
A structure call the tectum
The floor of the midbrain becomes what?
The tegmentum
The tectum differentiates into what two structures?
The superior colliculus and the inferior colliculus
What does the superior colliculus (optic tectum) do?
Receive direct input from the eye
What is one function of the optic tectum?
To control eye movement which it does via synaptic connections with motor neurons that inner age the eye muscles
What does the inferior colliculus do?
Receive sensory I formation but from the ears
What does the inferior colliculus serve as?
An important relay station for auditory information en route to the thalamus
The hindbrain differentiates into what three important structures?
The cerebellum, the pons, and the medulla
Damage of the cochlear nuclei leads to what?
Deafness
What are other sensory functions of the medulla?
Touch and taste
The medulla contains neurons that relay somatic sensory information from?
The spinal cord to the thalamus
The caudal neural tube turns into what?
The spinal cord
