Lecture 1 COPY

Question 1

What does the brain float in?

Answer 1

cerebral spinal fluid

Question 2

How much cerebral spinal fluid is made in a day?

Answer 2

500cc

Question 3

How much CSF is there in total?

Answer 3

150cc

Question 4

What makes CSF?

Answer 4

Choroid plexus

Question 5

Where is excess CSF reabsorbed?

Answer 5

arachnoid granulations

Question 6

Describe the flow of CSF.

Answer 6

-Made in the choroid plexus -through foramen of monroe -into the third ventricle -through the cerebral aqueduct -into the fourth ventricle -through 3 foramen (2 lateral: foramen of lueschka; 1 medial: foramen of magendie) -now in the cerebellar cistern -through foramen magnum -down spinal cord and back up to be reabsorbed

Question 7

How does CSF get into the venous system?

Answer 7

Arachnoid granulations

Question 8

What does the dura split in two to form?

Answer 8

superior sagittal sinus

Question 9

What PADs the brain?

Answer 9

The meninges: Pia mater (inner most) Arachnoid mater (middle) (spider webs) Dura mater (outside)

Question 10

If you break a bridging vein what could happen?

Answer 10

A subdural hematoma

Question 11

What does stenosis mean? What would happen if you had stenosis in a foramen for the CSF?

Answer 11

stenosis is narrowing of something if you had narrowing in the foramen then it would cause a backup of CSF and built up pressure

Question 12

What part of the dura mater separates the two hemispheres?

Answer 12

cerebral falx

Question 13

What part of the dura separates the cerebellum?

Answer 13

the cerebellar tentorium

Question 14

What is the Pterion?

Answer 14

The place were the 4 bones meet on side of head, weak spot.

Question 15

What are the four lobes of the brain?

Answer 15

Occipital Parietal Temporal Frontal

Question 16

What is the central sulcus?

Answer 16

between frontal and parietal lobes

Question 17

What lobe is the primary motor cortex in?

Answer 17

Frontal

Question 18

What lobe is the primary somato-sensory cortex in?

Answer 18

Parietal

Question 19

T/F the right side of your brain controls the left side of your body

Answer 19

True

Question 20

What is the cavernous sinus?

Answer 20

lateral to the sella turcica, houses passage for CN3,4,6,V1,V2

Question 21

Label Veins

Answer 21

PPT 1 Slide 28

Question 22

What is the danger triangle?

Answer 22

corner of lips to bridge of nose. do not get an infection here bc it can travel to the brain

Question 23

What is Broca’s area?

Answer 23

LEFT SIDE broken language, form words/sentences

Question 24

What is wernicke’s area?

Answer 24

LEFT SIDE understanding language. can speak words but will be wordy

Question 25

Pyramidal or Lateral Corticospinal tract

Answer 25

motor tract

Question 26

Posterior Columns or Dorsal Columns tract

Answer 26

Vibration and position

Question 27

Anterolateral or Spinothalamic tract

Answer 27

pain and temperature and CRUDE touch

Question 28

What is the decussation point for the lateral corticospinal tract?

Answer 28

pyrimidal decussation in the medulla

Question 29

What is the decussation point for the posterior column tract?

Answer 29

internal arcuate fibers in the medulla

Question 30

What is the decussation point for the anterolateral tract?

Answer 30

Anterior commissure (spinal cord)

Question 31

Where does the lateral corticalspinal tract nerves synapse?

Answer 31

anterior horn (2 neurons, upper and lower)

Question 32

Where does the posterior column tract nerves synapse?

Answer 32

primary and secondary synapse at the gracile nucleus secondary and 3rd neuron synapse at the thalamus: VPL

Question 33

What is the VPL?

Answer 33

Ventral posterior lateral nucleus

Question 34

Where does the anterior lateral tract nerves synapse?

Answer 34

the primary neuron and secondary neuron synapse at the posterior horn the secondary and 3rd neuron synapse at the thalamus VPL

Question 35

Label the blood supply vessels to the brain

Answer 35

PPT 1 Slide 58

Question 36

Label the blood supply to the hemispheres of the brain

Answer 36

PPT 1 Slide 63

Question 37

What is a homunculus? What does it look like?

Answer 37

The two monkeys haning upside down. What parts of the brain correspond to the sensory or motor cortex

Question 38

Where is the primary auditory cortex?

Answer 38

in the sylvian fissure

Question 39

Identify the structure on the diagram with the stars

Answer 39

cerebellum

Question 40

Identify the structure with the star on the diagram

Answer 40

pons

Question 41

Identify the structure on the diagram

Answer 41

midbrain

Question 42

identify the structure on the brain

Answer 42

cerebrum

Question 43

what three parts make up the brainstem?

Answer 43

1. midbrain 2. pons 3. medulla oblongata

Question 44

Identify the lobe on the diagram

Answer 44

parietal lobe

Question 45

Identify the lobe on the diagram

Answer 45

frontal lobe

Question 46

Identify the lobe on the diagram

Answer 46

temporal lobe

Question 47

Identify the lobe on the diagram

Answer 47

occipital

Question 48

Identify the structure with the star

Answer 48

central sulcus

Question 49

Identify the structure with the star

Answer 49

cavernous sinus

Question 50

Identify the structure with the star

Answer 50

superior sagittal sinus

Question 51

Identify the structure in the diagram

Answer 51

inferior petrosal sinus

Question 52

Identify the structure with the blue arrow.

Answer 52

Ophthalmic nerve (CN V1)

Question 53

Identify the structure with the arrow.

Answer 53

oculomotor nerve (CN III)

Question 54

Identify the structure with the arrow.

Answer 54

trochlear nerve (CN IV)