CNS Flashcards
Where is cerebrospinal fluid formed
In choroid plexus of all four brain ventricles
What does the medulla oblongata do
Adjusts rate/force of contractions
Adjusts blood vessels diameters to regulate BP
And regulates respiration rate
Regions of the brain regulates body temperature, hunger, and thirst
Hypothalamus
Besides the cerebrum what region has an outer cortical layer of grey matter
Cerebellum
What two hemisphere regions are connected by the corpus colosseum
Cerebrum
What region functions to direct all sensory input, except olfactory impulses, to the cerebral cortex?
Thalamus
What region of the brain regulates hormonal secretion from the pituitary gland (hypothesis)
Hypothalamus
The fluid filled ventricles within the cerebrum are similar in function to the —— of the spinal cord
Central canal
The function of the blood brain barier is to
Help protect the nervous system
The tough, dense fibrous connective tissue meningeal layer is the
Dura mater
The only one of the merengues that follow the brain surface into a cerebral sulcus is the
Pia mater
The main visceral center of the brain is
Hypothalamus
Name the parts of a brain stem
Midbrain, medulla, pons
What does the hypothalamus control
ANS and regulates hunger and thirst sensations
T/F the medullary respiratory center controls the rhythms and rate of breathing
True
Why does the lumbar puncture take place in the lower lumber region of the spinal cord
The spinal cord approximately the level of L1 making the area between L4and L5 safe location to sample cerebral spinal fluid without injuring the neural tissues of the spinal cord
Functions of the spinal cord
It’s a major integration center for reflexes
It’s a two way conduction pathway for signals between body and brain
Spinal cord is involved in sensory and motor innervation of the entire body inferior to the head
The gray matter of the spinal cord….
Is a mix of neuronal cell bodies, unmyelinated axons, dendrites, neuroglia
At what vertebral level does the spinal cord terminate (inferiorly) in the ave adult
Between L1 and L2
Cell bodies of the sensory neurons of the spinal nerves are located in
The dorsal root ganglia external to the spinal cord
Posterior gray horns of the spinal cord consists of
Cell bodies of interneurons
The cuada equine
Is a series of nerve roots in the lumbar and sacral region
T/F the white mater of the spinal cord contains ascending and descending pathways known as tracts
True
