Week 1: Anatomy of the Brain & Skull

Question 1

Frontal Gyri

Answer 1

In the frontal lobe; Has superior, middle, & inferior

Question 2

PreCentral Gyrus

Answer 2

Just anterior to the precentral sulcus

Question 3

PostCentral Sulcus

Answer 3

Just posterior to the central sulcus;

AKA the sensorymotor cortex

Question 4

Temporal Gyrus

Answer 4

On the temporal lobe; Has superior, middle, & inferior

Question 5

Cingulate Gyrus

Answer 5

Basically the limbic lobe

Question 6

Orbital Gyrus

Answer 6

Undersurface of the frontal lobe

Question 7

Longitudinal Fissure

Answer 7

Separates right & left hemispheres

Question 8

Transverse Fissure

Answer 8

Separates cerebrum from cerebellum

Question 9

Lateral Sulcus

Answer 9

Divides temporal lobe from parietal lobe

Question 10

Central Sulcus

Answer 10

Divides frontal lobe from parietal lobe

Question 11

Calcarine Sulcus

Answer 11

Splits occipital lobe into superior & inferior

Question 12

Parietal-Occipital Sulcus

Answer 12

Divides parietal lobe from occipital lobe

Question 13

Meningeal Reflections

Answer 13

Dura sometimes sinks in between hemispheres, sulci, etc

Question 14

Fall Cerebri

Answer 14

Goes into the longitudinal fissure

Question 15

Falx Cerebelli

Answer 15

Around the cerebellum near the vermis

Question 16

Tentorium Cerebelli

Answer 16

Above the cerebellum

Question 17

Diaphragma Sella

Answer 17

Thickening at the top of sella turcica to anchor the pituitary into the sella turcica

Question 18

Orientation of Cerebellum

Answer 18

Flat surface is superior, Round surface is inferior

Question 19

Vermis

Answer 19

Right down the middle of the cerebellum

Question 20

Flocculonodular Lobe

Answer 20

Little thing on anterior surface of cerebellum

Question 21

Corpus Cerebelli

Answer 21

Cerebellar Body

Question 22

Horizontal Fissure of Cerebellum

Answer 22

On the sides

Question 23

Primary Fissure of Cerebellum

Answer 23

Divides cerebellum into anterior & posterior portions

Question 24

What is the anatomical relationship of the pons to the cerebellum?

Answer 24

The pons is anterior to the cerebellum

Question 25

Anterior Cranial Fossa Characteristics, Location, Contains, & Composition

Answer 25

Characteristics: Most shallow Location: Lies over the nasal & orbital cavities Contains: Frontal Lobe Composition: Frontal, Ethmoid, & Sphenoid

Question 26

Middle Cranial Fossa Characteristics,Location, Contains, & Composition

Answer 26

Characteristics: Has optic canal, superior orbital fissure, foramen rotundum, foramen ovale, foramen spinosum, & carotid canal Location: Located centrally Contains: Pituitary Composition: Sphenoid & Temporal Bones

Question 27

Posterior Cranial Fossa Characteristics, Contains, Composition

Answer 27

Characteristics: Deepest Has internal acoustic meatus, foramen magnum, jugular foramina, & hypoglossal canal Contains: Brainstem & Cerebellum Composition: Occiput & Temporal Bones

Question 28

Mastoid Process

Answer 28

Bump off the lateral portion of the temporal bone

Question 29

Styloid Process

Answer 29

Long pointy thing that sticks down

Question 30

What sits in the sella turcica?

Answer 30

Pituitary Gland

Question 31

Where are there more axons in the spinal cord?

Answer 31

As you get closer to the brain

Question 32

Conus Medullaris

Answer 32

End of the spinal cord at L1

Question 33

Filum Terminal

Answer 33

Little string of nervous tissue that anchors the spinal cord to the dural sac; Is non-conductive

Question 34

Anterior Median Fissure

Answer 34

Big slit on the anterior aspect of the spinal cord

Question 35

Anterolateral Sulci

Answer 35

Where ventral rootlets exit the spinal cord

Question 36

Posterior Median Sulcus

Answer 36

Line on the posterior aspect of the spinal cord

Question 37

Posterior Median Septum

Answer 37

Lines on either side of the posterior median sulcus

Question 38

Posterolateral Sulci

Answer 38

Where the dorsal rootlets exit the spinal cord

Question 39

Gray Commissure

Answer 39

Connects each half of the "butterfly"

Question 40

White Commisure

Answer 40

Just anterior & posterior to gray commissure

Question 41

What is the only part of the spinal cord that has lateral horns?

Answer 41

T-Spine

Question 42

Why is the thoracic region of the spinal cord the only region to have really slim gray matter?

Answer 42

Because the T-SC doesn't innervate limbs

Question 43

Laminate 1-4

Answer 43

Primary areas for exteroceptive/sensory fibers

Question 44

Lamina 5 & 6

Answer 44

Primary receiving areas for proprioceptive fibers; Has extensive connections w/higher centers for pain, temp, & touch

Question 45

Lamina 6

Answer 45

Deep Sensory Structure Input Prominent in limb enlargements from T4-L2

Question 46

Lamina 7

Answer 46

Has internuncial pool Largest lamina

Question 47

Lamina 8

Answer 47

Cell interconnections & origins of gamma efferent fibers | Decussating fibers cross anterior to the central canal

Question 48

Lamina 9

Answer 48

Alpha efferent (motor fibers) w/gamma & interneurons

Question 49

Lamina 10

Answer 49

Decussating Axons

Question 50

Purpose of horns in spinal cord

Answer 50

For SNS

Question 51

Denticulate Ligaments

Answer 51

Attaches pia to dura Helps to keep the spinal cord suspended in space *Extra thickenings on the model

Question 52

What landmarks help you determine anterior from posterior spinal nerve roots?

Answer 52

Only the dorsal root has ganglion

Question 53

What is the relationship between spinal meningeal layers & cerebral meningeal layers?

Answer 53

*

Question 54

What is the function of the filum terminal?

Answer 54

Anchors the spinal cord

Question 55

At what level of the vertebral column is the conus medullaris located & what lies inferior to that?

Answer 55

L1 Cauda equina lies inferior to the conus medullaris

Question 56

Primary Motor Cortex Location

Answer 56

Just anterior to the central sulcus