( 1 ) Stimuli and Responses

Question 1

What does the central nervous system control?
( 2 )

Answer 1

Brain
Spinal cord

Question 2

What does the peripheral nervous system control? ( 2 )

Answer 2

Cranial Nerves
Spinal Nerves

Question 3

Functions of Human Nervous System
( answer 2 )

Answer 3

Detects Stimuli
Sends Information in form of impulses
Interprets impulses

Question 4

What are involuntary actions

Answer 4

Actions that occur immediately without conscious control or prior thoughts

Question 5

Voluntary actions are controlled by which part of the body?

Answer 5

Brain

Question 6

Involuntary actions are controlled by which part of the body?

Answer 6

Spinal Cord and Medulla Oblongata

Question 7

What involuntary actions involves spinal cord?
( reflex actions )

Answer 7

Withdrawing hand from hot shit
Withdrawing hand from sharp shit
Sneezing when dust enter nose

Question 8

What involuntary actions involve MEDULLA OBLONGATA?

Answer 8

Heartbeat
Breathing
Peristalsis

Question 9

Importance of human nervous system in daily life

Answer 9

Carry out processes in the body such as breathing and body movements

Question 10

What happen if nervous system cacat?

Answer 10

Become paralysed temporarily/permanently

Question 11

What are the 5 sensory ORGANS

Answer 11

Eye
Nose
Ear
Skin
Tongue

Question 12

What is the retina?

Answer 12

Layer containing photoreceptors which detect light and produce nerve impulses

Question 13

What is the aqueous humour?

Answer 13

Transparent fluid which maintain the shape of the eyeball and focuses light into the eye

Question 14

What is the vitreous humour?

Answer 14

Transparent jelly like susbtance which maintain the shape of the eyeball and focuses light onto the eye

Question 15

Difference of rod and cone cells?

Answer 15

Rod: Sensitive to different light intensities but are not sensitive to colours of light
Cone: Sensitive to colours of light under BRIGHT conditions

Question 16

Use of earlobe and ear canal

Answer 16

• Collect and direct sound waves into ear canal
• Direct sound waves to the eardrum

Question 17

Use of eardrum and ossicles

Answer 17

• Vibrate according to the frequency of sound waves received and transfer vibrations to the ossicles
• Amplify sound vibrations and transfer them to the oval window

Question 18

Function of Sensory cells for smell

Answer 18

Sensory cells for smell are tiny and covered w/ a layer of mucus. Chemical substances in the air will dissolve in this layer and stimulate the cells to produce nerve impulses

Question 19

What are the tiny modules on the tongue called?

Answer 19

Papillae

Question 20

What is the surface of the papillae covered in?

Answer 20

Taste buds

Question 21

What are the 5 types of basic tastes

Answer 21

Sweet
Sour
Umami
Salty
Bitter

Question 22

Function of taste buds

Answer 22

When food is chewed, part/all the chemical substances in food will dissolve into saliva. These dissolved subtances will diffuse into taste buds through their pores and stimulate taste receptors to produce nerve impulses

Question 23

What is the largest sensory organ

Answer 23

Skin

Question 24

Mechanisim of hearing
__->__->__->__->__->__->__->__

Answer 24

Earlobe, ear canal, eardrum, ossicles, oval window, cochlea, auditory nerve, Brain

Question 25

What are limitations of sight?

Answer 25

Optical Illusions and blind spot

Question 26

How does an optical illusion occur

Answer 26

When an object seen differs from its actual state.

Question 27

Reason to short sightedness?
Solution?

Answer 27

Eye lens too thick
Eyeball too long
Concave Lens

Question 28

Reason to long sightedness?
Solution?

Answer 28

Eye lens too thin
Eyeball too short
Convex Lens

Question 29

Reason to Astigmatism
Solution?

Answer 29

Uneven curvature of the cornea/eye lens
Cylindrical Lens