BRAINCAKEHomeostasis and response
Revision notes for Homeostasis and response in AQA Biology (8461). Every lesson in BrainCake comes with R.E.C.I.P.E. recall steps, a quick check and spaced reviews.
- Structure and functionThe nervous system lets humans react to their surroundings and coordinate their behaviour.
- The brain (biology only)The brain controls complex behaviour.
- The eye (biology only)The eye is a sense organ.
- Control of body temperature (biology only)Body temperature is monitored and controlled by the thermoregulatory centre in the brain.
- Human endocrine systemThe endocrine system is made up of glands.
- Control of blood glucose concentrationThe concentration of glucose in the blood is monitored and controlled by the pancreas.
- Maintaining water and nitrogen balance in the body (biology only)Water, ions and urea leave the body in several ways.
- Hormones in human reproductionDuring puberty, reproductive hormones cause the secondary sex characteristics to develop.
- ContraceptionFertility can be controlled by hormonal and non-hormonal methods of contraception.
- The use of hormones to treat infertility (HT only)Some women have difficulty becoming pregnant because their eggs do not mature or are not released.
- Negative feedback (HT only)Adrenaline is produced by the adrenal glands in times of fear or stress.
- Control and coordinationPlants, like animals, use hormones to coordinate and control their growth and their responses.
- Use of plant hormones (HT only)Plant hormones are widely used in agriculture and horticulture to control plant growth.