Brain Flashcards
carotid arteries
main blood supply to the brain
jugular veins
exits the brain
cerebrospinal fluid
fills cavities and canals in the brain
clear fluid found inside and surrounding the CNS
cerebrospinal fluid functions
protects CNS from minor jolts
delivers nutrients to parts of brain not serviced by blood due to blood brain barrier
removes waste
blood brain barrier
way to keep out most toxins and pathogens from certain parts of the brain
works using a series of membranes and tissues that produce cerebrospinal fluid
controls which substances will pass to the fluid and subsequently to the neurons
dura mater
– outermost and the toughest – made of tough connective tissue
arachnoid
middle web like layer – where the CSF filters back into the blood stream
pia mater
thin transparent membrane that sits tightly to the brain and spinal cord
choroid plexus
a ventricle in the brain where cerebrospinal fluid is formed through special capillaries
lipid soluble substances that can quickly pass through the lipid bilayer of the plasma membrane
alcohol, nicotine, and drugs
the brain is divided into what
hindbrain, midbrain, and forebrain
the hindbrain contains what
medulla ablongata
cerebellum
pons
medulla oblongata
has influence over respiration, heart rate, swallowing, coughing, and sleep/wake responses
cerebellum
acts as a reflex center for maintaining posture and coordinating limbs
pons
(“bridge”) possesses nerve tracts that pass between brain centers
