Applied Science Level 3 Unit 9 Research Homework

This assignment focuses on the concept of homeostasis, explaining its significance in maintaining the body's internal environment. It covers the control mechanisms involved, including feedback loops, temperature regulation, and the role of hormones. Students are required to discuss the endocrine system and illustrate temperature control processes, emphasizing the importance of maintaining equilibrium for cellular function.

Applied Science Level 3 Unit 9 Research Homework
Learning Aim B: Homeostasis
1. Homeostasis
What is homeostasis? Why is it important?
Homeostasis is the process in which the body keeps it's internal environment at a
constant temperature despite changes in the external environment. It involves trying
to maintain features of blood and tissue fluid within restricted limits. These include
blood glucose levels, water level, blood pH and temperature. Homeostasis is
important as it ensures that the cells of the body are in an environment that meets
their requirements so that they can function effectively, if not cells and organs can
become damaged. However this does not mean that they are no changes in the
body, changes happen at an optimum point and due to homeostasis they have the
ability to return to that optimum point therefore restore a balanced equilibrium.
https://www.kerboodle.com/api/courses/14283/interactives/111859.html
2. The Control Mechanism Explain how things are controlled
Homeostasis relies on constant feedback.
 Set point
 Receptors
 Coordinators
 Effectors
https://www.kerboodle.com/api/courses/14283/interactives/111859.html
3. Glands and Organs involved (page 369 in your text book). Discuss the endocrine system in detail
and include a diagram
4. Temperature Control
Introduce the topic, why is temperature regulation important
Temperature, to include roles of (add a picture for these 4 bullet points)
● vasodilation and vasoconstriction of arterioles leading to surface capillaries
● pili erector muscles
● sweat production
● shivering
● Explain Vasoconstriction and vasodilation using the key diagrams (include the points above)

https://www.healthline.com/health/thermoregulation#takeaway
https://www.bbc.co.uk/bitesize/guides/zqgfv4j/revision/4
5. Feedback loop for temperature control
https://www.kerboodle.com/api/courses/14283/interactives/111859.html
Page 378 Fig 9.3 can be used
6. The role of Hormones in temperature control (Merit) However there is some overlap with the
Pass here
● Temperature, the role Hypothalamus, pituitary gland, thyroid, parathyroid and relevant
hormones. Include exocrine glands, e.g. sweat glands, Brunner’s glands
http://www.biologymad.com/resources/A2%20Homeostasis.pdf