1.3 Organization of The Brain

Question 1

What is the Meninges?

Answer 1

• connective tissues between the brain and skull
• Help to keep the brain on the skull
• Nourishes the brain

Question 2

Dura Matter:

Answer 2

connective tissue between the skull and the brain

Question 3

Arachnoid Matter:

Answer 3

Middle connective tissue

Question 4

Pia Matter:

Answer 4

tissue directly connecting to the brain

Question 5

What does Cerebral Spinal Fluid Do?

Answer 5

• nourish the brain

- cells produce this in the ventral cavity

Question 6

What are the three different parts of your brain?

Answer 6

• Hind brain
• Midbrain
• forebrain

Question 7

Which ones came first and how do you know?

Answer 7

• Hind brain and Midbrain

- Position in the head

Question 8

What are the prenatal parts of the brain and how did they come about?

Answer 8

-Parts created during development that started with three lumps and the hind brain and forebrain split again so five parts

Question 9

Prenatal Hindbrain?

Answer 9

• rhombocephalon
• myselphalon: Made the medulla oblongata
• metacephalon: Pons and cerebellum

Question 10

What is the medulla oblongata?

Answer 10

-The main part of brain responsible for breathing heart rate and life

Question 11

What is the Pons?

Answer 11

• Connection system for the medulla

- uses sensory and motor neurons

Question 12

Cerebellum?

Answer 12

• deals with balance, coordination and speech

- First to go when you are drunk

Question 13

Prenatal Midbrain?

Answer 13

• takes in sensory information from rest of the body
• Involuntary Sight and sound stimuli
• mesencephalon

Question 14

How does the involuntary sight and sound work?

Answer 14

colliculi has both superior and inferior parts of the brain

Question 15

Prenatal Forebrain?

Answer 15

• Dicephelon: hypothalamus, pineal gland,thalmus, pituitary gland
• telecephalon: Cerebral cortex and limbic system
• high order thinking and emotions

Question 16

What is Neuropsychology?

Answer 16

The study of putting together behavior and functioning of the brain

Question 17

What are the pros and cons of lesions?

Answer 17

• Lesions can tell you where something is going wrong
• Hard to tell the function because they spread
• Ablation on mice brains helps though

Question 18

What are Cortical Maps?

Answer 18

-When performing brain surgery doctors stimulate different parts of the brain to know what they do

Question 19

Electroencephalogram (EEG)

Answer 19

-Connects sensors on the scalp to see how a group of neurons functions

Question 20

Regional Cerebral Bloodflow (RcB)

Answer 20

Sniff a radioactive element

The blood will be tracked as it moves to the active regions of the brain

Question 21

Compute tomography/ Computed Axial Tomography

Answer 21

-x-rays of the brain that give cross sectional tissue image

Question 22

Position Emission tomography scan

Answer 22

Radiocctive element taken through sugar and target tissue is imaged

Question 23

Magnetic Resonance Imaging

Answer 23

Look at the hydrogen density regions of the brain using the magnetic field

Question 24

Functional Magnetic Resonance Imaging

Answer 24

same as above but with blood flow