Which lobes of the cerebral cortex are involved in language function?

Which lobe of the cerebral cortex is important for memory function?

What are the two major divisions of the central nervous system?

Central Nervous System (CNS)

and

Peripheral Nervous System (PNS)

Understand the meninges and spaces that exist between and around the meninges?

meninges: dura mater / arachnoid mater / pia mater

spaces: epidural / subdural / subarachnoid 

Where are non-vital reflexes located in the brain?

Understand the structures and functions of the diencephalon?

How many lobes are in the cerebral hemisphere?

What does the nervous system and central nervous system consist of?

NS = Brain, Spinal Cord, Nerves

CNS = Brain, Spinal Cord

What are sulci?

What is the largest part of the brain?

Understand sensory neurons?

How many ventricles are in the brain and where are they?

Four - #1 & 2 are lateral in each hemisphere

#3 is below and medial to 1 & 2

#4 - diamond-shaped space where cerebellum attaches to brain stem

How is cerebrospinal fluid formed?

What structures are included in the brainstem?

What part of the brain releases melatonin?

Understand the limbic system?

Prepareing the body to deal with immediate threats.

Fight or flight response

Dura mater - strong, white, fibrous tissue.

Outer layer of meninges.

Also known as:  ?

between the dura mater and pia mater

(delicate, cobweblike layer)

The outer surface of the brain and spinal cord.

Also, contains blood vessels.

Subarachnoid

(space for Lumbar punctures)

True or False....

The spinal cord completely fills the spinal cavity in the vertebrae.

medulla oblongata

pons

midbrain

emotions and pain

(hidden from view - inside the internal brain)

Central sulcus

a.k.a. fissure of Rolando

Lateral 

a.k.a. fissure of Sylvius

also, the island of Reil lies deep in the lateral fissure

Conscientiousness

Language

Emotions

Memory

74

Symbol of "W"

Must not exceed 100 mR/hr

(at 1 meter from the tube)

The envelope is the glass housing that protects the tube.

(Also, to provide a vacuum, permitting electrons to flow from cathode to anode without interacting with atoms in air.)

Used to reduce the EFS thus increasing resolution.

** permits the best resolution of detail while permitting as large as actual area as possible.

Shallow depression in the cathode assembly that houses the filaments - made of nickel.

Operates to narrow or focus the electron cloud during thermionic emission to be directed toward anode

Molybdenum (atomic # 42)

** because of it's ability to give a more uniform range

of lower energy photons.

What material is used for the anode target area?

Why is it used?

Tungsten

1. Higher x-ray production efficiency
2. Thermal conductivity
3. High melting point

The rotor will not turn and a spot will melt on the anode.

(picture p. 119)

1. High atomic # of 74 - has higher x-ray production efficiency
2. Thermal conductivity
3. High melting point

Why is a rotating anode more desirable

than a stationary anode?

There is better heat dissipation from the rotating anodes, which permits bombardment of electrons from the filament to a given area in a short amount of time.

Stationary anodes are low-power and inefficient for heat dissipation.

What are the 4 main components of the

x-ray tube assembly?

1. Cathode (the source of electrons)
2. Anode (target)
3. Glass envelope (vacuum)
4. Protective housing (made of very heavy lead)

1. Filament(s)
2. Focusing cup (located in the filament)
3. Associated wiring

1. Anode
2. Stator
3. Rotor

1. Serve as target surface for electrons from the filament, eventually becoming the source of x-ray photons
2. Conducts high-voltage from the cathode back into the generator circuitry
3. Serves as the primary thermal conductor

** x-ray photons are made at the anode **

Target

Focus

Focal point

Focal spot

Focal track

Target Area

(portion of the anode where focused electron stream impacts)

Composed of photons that were not

produced at the focal spot.

These photons are produced away from the focal spot and have sufficient

energy that when they strike another object in the tube, they

produce photons and can produce an image.