unit 2

Question 1

what muscles of the eye can be seen on CT?

Answer 1

rectus muscles ( superior, inferior, medial, lateral

Question 2

what vessels are responsible for drainage of the head

Answer 2

dural sinuses , drain into internal jugular vein

Question 3

outermost layer of meninges

Answer 3

dura mater

Question 4

middle layer of meninges

Answer 4

arachnoid

Question 5

innermost layer of meninges (adheres to the brain)

Answer 5

pia mater

Question 6

what provides a pathway for circulation of CSF within the brain

Answer 6

ventricles

Question 7

what structure produces CSF?

Answer 7

choroid plexus

Question 8

largest portion of the brain

Answer 8

cerebrum

Question 9

the 5 lobes of the brain

Answer 9

frontal , parietal, temporal, occipital, insula

Question 10

what is the “little brain”

Answer 10

cerebellum

Question 11

folds of the brain

Answer 11

gyri

Question 12

grooves of the brain

Answer 12

sulcus

Question 13

deepest grooves of brain

Answer 13

fissures

Question 14

the largest & densest bundle of white matter

Answer 14

corpus callosum

Question 15

white brain matter contains

Answer 15

myelinated axons

Question 16

gray brain matter contains

Answer 16

unmylinated neurons

Question 17

name the 3 major segments of the brain stem

Answer 17

midbrain, pons , medulla oblongata

Question 18

what major vessels form the circle of willis

Answer 18

-posterior , middle , & superior cerebral arteries
-posterior & anterior communicating
- basilar arteries
- internal carotid

Question 19

list the facial bones

Answer 19

maxilae - 2
zygomatic - 2
lacrimal - 2
nasal - 2
nasal conchae - 2
palatine - 2
vomer - 1
mandible - 1

Question 20

the layers of bone are :

Answer 20

compact bone

Question 21

suture that separates the frontal & parietal bones

Answer 21

coronal suture

Question 22

suture that separates the parietal bones

Answer 22

sagittal suture

Question 23

suture that separates temporal & parietal bones

Answer 23

squamous suture

Question 24

suture that separates parietal & occipital bone

Answer 24

lambdoidal suture

Question 25

what is the blood brain barrier

Answer 25

- protects the brain , made of small capillaries , prevents certain substances from crossing over

Question 26

function unit of the nervous system

Answer 26

neuron

Question 27

bring nervous information into the CNS (thought)

Answer 27

sensory or afferent

Question 28

relay nervous messages to organs (away from the brain) (action)

Answer 28

motor or efferent

Question 29

what carries messages to the cell body

Answer 29

dendrites

Question 30

carry messages away from cell body

Answer 30

axon

Question 31

where is CSF found ?

Answer 31

cisterns , central canal, spinal cord, ventricles

Question 32

space between arachnoid layer & pia mater

Answer 32

subarachnoid

Question 33

space external to the dura mater

Answer 33

epidural space

Question 34

space between the dura mater and the arachnoid

Answer 34

subdural space

Question 35

fore brain : ( 2 sections )

Answer 35

cerebrum & diencephalon

Question 36

white matter that connects the two hemispheres and allows for communication between them

Answer 36

corpus callosum

Question 37

what fissure separates the occipital lobe from the cerebellum

Answer 37

transverse fissure

Question 38

fissures are made up of :

Answer 38

sulci, gyri

Question 39

(sylvia’s fissure) separates the frontal, parietal, & temporal lobes of the cerebrum

Answer 39

lateral fissure

Question 40

4 portions of the diencephalon

Answer 40

epithalamus , thalamus, metathalamus, & hypothalamus

Question 41

connects the hind brain with the cerebrum with two main parts

Answer 41

mid brain

Question 42

once this structure passes through the foramen magnum is becomes the spinal cord

Answer 42

medulla oblongata

Question 43

what do they refer to as, our “internal clocks”

Answer 43

pineal gland

Question 44

how many cranial nerves arise from the brain stem

Answer 44

10 of the 12

Question 45

largest of the ventricles

Answer 45

lateral ventricle

Question 46

what cistern is between the medulla and inferior cerebellar hemispheres

Answer 46

cisterns magna

Question 47

1st branch off aorta

Answer 47

brachiocephalic (innominate) artery

Question 48

the two vertebral arteries merge to form _______ after is passes through the foramen magnum

Answer 48

basilar artery

Question 49

what bone houses organs for hearing

Answer 49

temporal bone

Question 50

where does a lumbar puncture (spinal tap) take place?

Answer 50

between L4-L5

Question 51

describe TIA

Answer 51

transient ischemic attack “mini stroke” comes & gos - interruption of cerebral blood flow

Question 52

what condition has a pool of blood between the brain & its outermost covering

Answer 52

subdural hematoma

Question 53

bleeding in the space between the brain & surrounding membrane , sudden severe headache & can be fatal

Answer 53

subarachnoid hemorrhage