Key Vocabulary

Question 1

Brain

Answer 1

organ that controls all body processes

Question 2

central nervous system (CNS)

Answer 2

brain and spinal cord – where nervous information is processed

Question 3

cerebellum

Answer 3

area of brain that controls posture, balance and non-voluntary movements

Question 4

cerebrum

Answer 4

area of brain that controls complex behaviour such as learning, memory, personality, and conscious thought

Question 5

ciliary body

Answer 5

muscular tissue in the eye that alters the shape of the lens

Question 6

cornea

Answer 6

transparent coating on the front of the eye

Question 7

effectors

Answer 7

muscles and glands which respond to impulses from the nervous system

Question 8

Focus

Answer 8

The production of a sharp image

Question 9

Glands

Answer 9

Secrete hormones into the blood stream

Question 10

hypothalamus

Answer 10

area of brain that regulates temperature and water balance

Question 11

Iris

Answer 11

coloured ring of muscle tissue in the eye which alters pupil size

Question 12

lens

Answer 12

structure in the eye that focuses light clearly onto the retina

Question 13

medulla

Answer 13

area of brain that controls autonomic actions such as heart rate and breathing rate

Question 14

motor neurones

Answer 14

transmits impulses from CNS to effectors

Question 15

Optic nerve

Answer 15

nervous tissue that carries nerve impulses from the eye to the brain

Question 16

peripheral nervous system (PNS)

Answer 16

all the sensory and motor neurones in the body

Question 17

pituitary gland

Answer 17

area of brain that stores and releases hormones that regulate many body functions

Question 18

pupil

Answer 18

central hole in the iris that allows light to enter the eye

Question 19

Pupil

Answer 19

central hole in the iris that allows light to enter the eye

Question 20

receptor

Answer 20

sensory cell that detects a stimulus

Question 21

Reflex action

Answer 21

Rapid autonomic response that does not involves the brain

Question 22

reflex arc

Answer 22

pathway followed by a nervous impulse during a reflex action

Question 23

relay neurones

Answer 23

neurones that carry electrical impulses from sensory neurones to motor neurones

Question 24

retina

Answer 24

Tissues from the back of the eye which include ligh-sensitive cells