Regulation of body functions; glands
Answers are for parents and teachers.
1
Make a comparison table of nervous and humoral regulation (at least 3 rows).
Signal: impulse / hormone; route: nerve / blood; speed: fast / slow; duration: short / long.
2
Sort into three types: salivary, thyroid, pancreas, sweat, adrenal, sex glands.
Exocrine: salivary, sweat; endocrine: thyroid, adrenal; mixed: pancreas, sex glands.
3
How does the body restore homeostasis when blood sugar rises? Write 2 sentences.
Under the hormone insulin the liver and tissues take up glucose and store the excess as glycogen; sugar returns to normal.
4
Explain the importance of using iodised salt.
Iodine is needed for thyroxine; shortage may enlarge the gland and disturb development; iodised salt is a simple, cheap prevention.
5
What should be done if there is a swelling in the neck or ongoing weakness?
Do not self-treat; tell an adult and see a doctor.