The Nervous System

Question 1

What does the corpus callosum

Answer 1

Communicates between left and right side of the brain

Question 2

Communicates between left and right side of the brain

Answer 2

Corpus callosum

Question 3

What does the cerebrum do (4)

Answer 3

• motor information
• sensory information
• high level functions
• learning/memory

Question 4

• motor information
• sensory information
• high level functions
• learning/memory

Answer 4

Cerebrum

Question 5

What does the hypothalamus do

Answer 5

Body temperature and water balance

Question 6

Body temperature and water balance

Answer 6

Hypothalamus

Question 7

What does the cerebellum do

Answer 7

Posture and balance , learned and fined motor skills

Question 8

Posture and balance , learned and fined motor skills

Answer 8

Cerebellum

Question 9

What does the medulla do

Answer 9

Automatic processes eg breathing

Question 10

Automatic processes eg breathing

Answer 10

Medulla

Question 11

What does the pituitary gland do

Answer 11

Stores and releases hormones

Question 12

Stores and release hormones

Answer 12

Pituitary gland

Question 13

What does the ciliary muscle do

Answer 13

Can contract or relax to change shape of lens

Question 14

Can contract or relax to change shape of lens

Answer 14

Ciliary muscles

Question 15

What do suspensory ligaments do

Answer 15

Hold lens in place

Question 16

Hold lens in place

Answer 16

Suspensory ligaments

Question 17

What does the pupil do

Answer 17

A gap to allow light to enter the light

Question 18

A gap to allow light to enter the light

Answer 18

Pupil

Question 19

What is the iris

Answer 19

A muscle that controls the size of the pupil

Question 20

A muscle that controls the size of the pupil

Answer 20

Iris

Question 21

What is the cornea

Answer 21

Transparent layer that starts refraction of light

Question 22

Transparent layer that starts refraction of light

Answer 22

Cornea

Question 23

What is the conjunctiva

Answer 23

Transparent layer that protects the eye

Question 24

Transparent layer that protects the eye

Answer 24

Conjunctiva

Question 25

What is the sclera

Answer 25

Tough white protective layer

Question 26

Tough white protective layer

Answer 26

Sclera

Question 27

What is the choroid

Answer 27

Black vascular layer that stops light being reflected in the eye

Question 28

Black vascular layer that stops light being reflected in the eye

Answer 28

Choroid

Question 29

What is the retina

Answer 29

A layer of light sensitive receptor cells

Question 30

What is the optic nerve

Answer 30

Carries nervous impulses from retina to brain

Question 31

A layer of light sensitive receptor cells

Answer 31

Retina

Question 32

What is a blind spot

Answer 32

Area with no light sensitive cells, where optic nerve joins

Question 33

Area with no light sensitive cells, where optic nerve joins

Answer 33

Blind spot

Question 34

Carries nervous impulses from retina to brain

Answer 34

Optic nerve

Question 35

What does the optic nerve do

Answer 35

Carries nervous impulses from retina to brain

Question 36

What does the lens do

Answer 36

Focuses image on retina

Question 37

Focuses image on retina

Answer 37

Lens

Question 38

What is the fovea

Answer 38

High concentration of cons for best point of image formation

Question 39

High concentration of cons for best point of image formation

Answer 39

Fovea

Question 40

What are the 2 types of nervous system

Answer 40

- Peripheral (PNS) | - Central (CNS)

Question 41

What is the role of the nervous system

Answer 41

To detect and respond to changes in the environment

Question 42

What is the nervous system needed to do (4)

Answer 42

- Move - Communicate - Control internal processes - carry out higher order functions

Question 43

What type of lens for long sightedness?

Answer 43

Convex

Question 44

What type of lens for short sightedness?

Answer 44

Concave

Question 45

What can cause long sightedness?

Answer 45

Weak lens or short eyeball

Question 46

Where is image formed with long sightedness

Answer 46

Behind retina

Question 47

What can cause short sightedness

Answer 47

Long eyeball or powerful lens

Question 48

Where does image form with short sightedness

Answer 48

In front of retina

Question 49

What happens when circular muscles contract

Answer 49

Pupil constricts

Question 50

What happens when radial muscles contract

Answer 50

Pupil dilates

Question 51

How is an image formed

Answer 51

Stimulus detected by receptors and converted into electrical impulse

Question 52

Limitations of investigating brains (5)

Answer 52

1. One function needs many areas of brain 2. One area of brain for many functions 3. Not enough studies to draw conclusions 4. Consent 5. Ethical issues

Question 53

Causes of nervous system damage (4)

Answer 53

1. Injury 2. Disease 3. genetics 4. Toxic substances

Question 54

Damage to PNS results in (3)

Answer 54

1. Numbness 2. Inability to feel pain 3. Loss of coordination

Question 55

What can damage to CNS lead to (4)

Answer 55

1. Loss of control of body systems 2. Paralysis 3. Memory loss 4. Processing difficulties

Question 56

What measures brain activity

Answer 56

EEG + MEG

Question 57

CT advantages (5)

Answer 57

1. Non invasive 2. Hard tissue 3. Quick 4. Detailed 5. Yes to metal implants

Question 58

CT disadvantages (3)

Answer 58

1. Contrast dyes 2. Radiation 3. Not portable

Question 59

MRI advantages (3)

Answer 59

1. Soft tissue 2. Non invasive 3. Any plane

Question 60

MRI Disadvantages (3)

Answer 60

1. Expensive 2. No to metal implants 3. Not portable

Question 61

Info from MRI (3)

Answer 61

1. Changes in implants 2. Visualise Alzheimer's 3. Detect tumors

Question 62

Info from CT (3)

Answer 62

1. Diagnose arthritis 2. Damage from strokes 3. Abnormalities in x-Rays

Question 63

Nervous response (5)

Answer 63

1. Stimulus 2. Receptors 3. CNS 4. Effectors 5. Response