7 Brain Flashcards
What makes white vs gray matter
White= axons, gray= cell bodies
Pseudounipolar cells: 2, bipolar: 2
Pseudo: drg and cranial ganglion, bi: retina, ear
Astrocyte function
Metabolic reg and neuron repair
Ependymal cell function
Form choroid plexus to make csf, in 3rd and 4th ventricles
Oligodendrocyte function
Form myelin sheath in cns
Microglia function
Phagocytose debris
Brain part where motor and sensory cortex are
Motor: frontal, parietal: sensory
Where in brain you understand vs motor control speech
Understand- wernicke, talk- broca
Cognition, sensation, movement area
Cerebral cortex
Memory and learning area
Hippocampus
Emotion, appetite, response to pain area
Amygdala
Fine motor control area
Basal ganglia
Areas of autonomic reg
Pons and medulla
Cerebellum parts: equilibrium, muscle tone, and voluntary movement
Equil: archeo, muscle tone: paleo, neo: voluntary movement
Only cranial nerve that isn’t in pns, how its also diff
CN II, surrounded by dura
CSF: volume, specific gravity, and pressure
150 ml, 1.002-1.009, 5-15 mmhg
CSF: produced by what/rate
Ependymal cells of choroid plexus, 30 ml/hr
CSF circulation path
L and R lateral ventricles, foramen of Munro, 3rd vent, aqueduct of sylvius, 4th vent, foramen of luschka (2) and foramen of magendie, brain and SC, superior saggital sinus
Where csf is absorbed
Arachnoid villi in superior saggital sinus
Pneumonic for csf flow
Love my 3 silly 4 lorn magpies
CBF equation
CPP/CVR
CBF rough amount in ml or % CO
50 ml/100g/min or 15%
CBF value when: ischemic, cortical suppression, cell death
20, 15, <15
Determinants of CBF: 5
Cmro2, CPP, venous pressure, paco2, pao2
