Summary BTEC Applied Science UNIT 9B DISTINCTION! RATED A+

BTEC Applied Science UNIT 9B DISTINCTION




BTEC Applied Science UNIT 9B DISTINCTION

, BTEC Applied Science UNIT 9B DISTINCTION




Unit 9: Human Regulation and
Reproduction
B: Homeostatic control of body systems



Introduction
The body's natural survival procedure is to
keep certain internal environments in your
body within certain levels. These internal
environments include PH, temperature, and
salt concentration. A way of doing this is
through a feedback mechanism where the
hormones and nervous system can detect
where the internal environment is
imbalanced, changing the environment and
cutting the levels back to normal. This
system is important in the monitoring and
regulation of the conditions within the
body, without this our bodies would suffer
detrimental damage.

Hypothalamus: regulates homeostasis which keeps all the processes in the
body balanced such as temperature, thirst, hunger and circadian rhythm.
This is done through the release of hormones and by controlling the body’s
heart rate, digestion and respiratory rate.

Pineal gland: this is a gland that produces melatonin which regulates the
body’s sleep cycles.

Pituitary gland: produces and releases various hormone which aid in growth,
follicle stimulation, thyroid stimulation etc. as well as releasing oxytocin and
ADH which are produced by the hypothalamus

Thyroid and parathyroid gland: the thyroid gland produces hormones that
regulate metabolism, energy levels and growth as well as producing
calcitonin which regulates calcium levels. While the parathyroid gland
produces a hormone that regulates calcium and phosphorus balance in the
blood and bones