Nervous, humoral and immune regulation
Answers are for parents and teachers.
1
The ruler fell 10, 12, 14 and 16 cm. What is the average in cm?
13
2
Give one animal example for each type of nervous system.
Diffuse – hydra; trunk – flatworm; chain – earthworm; tubular – fish.
3
How does humoral regulation differ from nervous regulation?
The signal travels slowly in blood via hormones with long-lasting effect; nervous signals are fast and precise.
4
List the parts of a reflex arc in order.
Receptor → sensory neuron → nerve centre → motor neuron → effector organ.
5
Why does vaccination help the immune system?
It supplies a harmless antigen so the body forms antibodies and memory cells in advance.