Neurobiology 2 Flashcards
Cerebral cortex
Function: higher level processing and process sensory stimuli and initiate motor response
location: prosencephalon, telencephalon
hippocampus
function: learning and memory
location prosencephalon, telencephalon
basal ganglia
function: voluntary control of movement, procedural learning
location: telencephalon, diencephalon, and mesencephalon
Thalamus
function:relay station for input to the cerebral cortex
location: diencephalon
hypothalamus
function: endocrine regulation, appetite, emotional behavior
location: diencephalon
cerebellum
function: maintenance of posture and balance
location: metencephalon
pons
function: facial movement, hearing, balance, respiration, sleep
location: metencephalon
medulla
function: breathing, blood pressure, respiration
location: myelencephalon
grey matter
mostly cell bodies and dendrites
white matter
mostly axons
dorsal branch
sensory/motor to the back
ventral branch
sensory/motor to the ventral body wall, Limbs, and visceral organs
dorsal root ganglia
location of spinally sensory nerons body
dermatome
strip of skin where each spinal nerve is located
ventral horn
location of spinal motor neurons body
olfactory (1)
function: smell (sensory)
location: telencephalon
optic (2)
function: vision (sensory)
location: diencephalon
oculomotor (3) and trochlear (4)
function: eye movement (motor)
location: mesencephalon
abducent (6)
function: eye movement (motor)
location: myelencephalon
trigeminal (5)
Function: sensory to face and motor to chewing muscles (both)
location: metencephalon
facial (7)
function: sensory to ear and motor to muscles of facial expression (both)
location: myelencephalon
vestibulocochlear (8)
function: vestibular(balance) and cochlear (hearing) (2 sensory never that run together)
location: myelencephalon
glossopharyngeal (9)
function: sensory and motor to mouth and throat
location: myelencephalon
vagus (10)
function: sensory and motor to the viscera
location: myelencephalon
spinal accessory (11)
function: motor to neck muscles
location: myelencephalon
hypoglossal (12)
function: motor to muscles of tongue
location: myelencephalon
dura mater
function: protection
tough and fibrous outer layer
Arachnoid mater
Function: cushioning, absorption of CSF
spider web appearance
pia mater
function: barrier, blood vessel penetration
delicate membrane, follows the gyri and sulci of the brain
epidural space
between bone and dura
subdural space
potential space
subarachnoid space
location of csf
dorsal spinal artery
supplies dorsal white and grey matter
ventral spinal artery
supplies ventral and lateral white and grey matter
2 major veins of the spinal cord
dorsal spinal vein
ventral spinal vein
blood brain barrier
function: protect the neural tissue from pathogens and toxins in the bloodstream
Choroid plexus
Located in lateral, third, and forth ventricles, uses a variety of pumps and channels to form csf from blood
Cerebrospinal fluid functions
Protection/shock absorption
Homeostasis
Clearance of waste products
Endonerium
Connective tissue around individual axons
Perineurium
Connective tissue around bundles of axons
Epineurium
Connective tissue around nerves
Shwann cels
Myelinate axons
Autonomic nervous system
Regulates involuntary physiologic processes
Sympathetic nervous system
Fight, flight, fright
Adrenal gland
Endocrine gland- releases chemical messengers into blood, controlled by sympathetic nerves
Parasympathetic nervous system
Rest and digest (homeostasis)
Enteric nervous system
Web-like series of nerons located in the wall of the intestine
Ependymal cells
Line ventricles and central canal, forms blood brain barrier
Oligodendrocytes
Insulation of cns neruon axon (1 can insulate 50 axons)
Astrocytes
Structural support
Form barrier between blood and neruons