body senses

Question 1

haptic perception

Answer 1

active exploration of the environment by touching with hands

Question 2

thermoreceptors

Answer 2

nerve fibres which detect temperature

Question 3

congenital insensitivity

Answer 3

cannot feel pain

Question 4

a-delta fibres

Answer 4

pain receptors for initial sharp pains

Question 5

c fibres

Answer 5

pain receptors for longer dull pains

Question 6

gate control theory

Answer 6

signals from pain receptors can be stopped by interneurons in the spinal cord via feedback

Question 7

vestibular system

Answer 7

maintains balance through 3 fluid filled semicircular canals in the inner ear

Question 8

olfactory epithelium

Answer 8

contains about 10 million olfactory receptor neurons for smell

Question 9

how does smell work

Answer 9

odourant molecules bind to olfactory receptor neurons; if there’s enough an action potential is passed

Question 10

papillae

Answer 10

tiny bumps that cover the tongue; each contain hundreds of taste buds

Question 11

taste buds

Answer 11

organ of taste transduction
each has 50-100 taste receptor cells
lose around 50% by 20yr

Question 12

taste receptors

Answer 12

microvilli tips, react to tastant molecules in food