Unit 4- the brain pt 3

Question 1

Nucleus

Answer 1

a bundle of cells that work together.

Question 2

pituitary dwarfism

Answer 2

a condition in which a person grows very slowly and as an adult typically shorter than an average adult.

Question 3

reflex arc

Answer 3

reflexes occur when a signal is sent from a sensory organ to the spinal cord. It then processes that information instead of passing it onto the brain.

Question 4

“split brain”

Answer 4

When the two hemispheres can’t communicate. Both hemispheres act without knowledge of the other.

Question 5

ablation

Answer 5

is the process of removing or destroying some brain tissue leaving lesions or tissue damaged from the surgery behind.

Question 6

autopsy

Answer 6

a postmortem examination to determine the cause of death- offers another tool for brain study.

Question 7

computerized axial tomography
(CT or CAT scan)

Answer 7

involves taking 2D photos to look at organs and other body parts

Question 8

deep brain stimulation

Answer 8

a less invasive method of altering the brain to eliminate behavior symptoms.

Question 9

electroencephalogram
(EEG)

Answer 9

attach electrodes to a person’s scalp to record the brain waves.

Question 10

Functional Magnetic Resonance Imaging
(fMRI)

Answer 10

uses magnetic Resonance Imaging to see blood flow and oxygen metabolism to infer brain activity .

Question 11

Hemispherectomy

Answer 11

removing the diseased part of the brain

Question 12

lesions/ lesioning

Answer 12

damaging certain parts of the brain and nothing changes in behavior.

Question 13

MRI

Answer 13

is an imaging technique that is used to see internal organs. Unlike X-rays, this shows detailed images of the body. It shows damage to ligaments and cartilage after a sport injury, such as a severely twisted ankle or knee.

Question 14

Positron Emission Tomography(PET Scan)

Answer 14

allows researchers to examine slices of deep brain structures that had previously been seen during surgery. During the PET scan scientist inject a radioactive “tracker” molecule into the bloodstream to measure the amount of energy the brain uses during particular activities,

Question 15

Roger Sperry and Micheal Gazzaniga

Answer 15

Showed that visual information got stuck in one hemisphere

Question 16

x-rays

Answer 16

generally show solid structures inside the body such as bones.

Question 17

Transcranial Magnetic Stimulation
(TMS)

Answer 17

magnetic fields of how the brain processes emotions.

Question 18

Paul Broca

Answer 18

studied patients who lost the ability to speak.

Question 19

Carl Wernicke

Answer 19

studied patients who lost the ability to understand language.

Question 20

prefrontal lobotomy

Answer 20

uses ablation to control behavior.