a) nervous control

Question 1

CNS

Answer 1

• processes info from senses
• consists of brain and spinal cord

Question 2

cerebrum

Answer 2

controls memory, personality, conscious thoughts (at top of brain)

Question 3

cerebellum

Answer 3

controls balance and coordination of movement (bottom right)

Question 4

medulla

Answer 4

controls heart and breathing rate
(bottom left)

Question 5

flow of information

Answer 5

stimulus —> receptors then (sensory neutron takes to) —> CNS (inter neutron) then motor neuron takes to —> effectors (muscle and gland)

Question 6

sensory neurons

Answer 6

carry impulse from sense organ to CNS

Question 7

inter neuron

Answer 7

carries impulse from sensory to motor neurone

Question 8

motor neuron

Answer 8

carries impulse from CNS to effector organ

Question 9

synapse

Answer 9

tiny space between neutrons which allows info to be passed from one neutron to another

Question 10

reflex action

Answer 10

• rapid automatic response to stimulus
• protect body from harm

Question 11

reflex arc

Answer 11

1. nerve endings in receptor detect stimulus
2. sensory neuron carries nerve impulse to spinal cord
3. inter neuron carries nerve impulses to motor neuron
4. motor neuron carries nerve impulses to muscle
5. muscle contract to move limb away from harmful stimulus