5.6 - Regulation

• Biologie
• Middelbare school
• vwo
• Leerjaar 3

5.6 Regulation

1. What are hormones?
2. How do you regulate the glucose level?
3. What is feedback?
4. Adrenaline

Regulation

The nervous system controls the operation of muscles and glands.

Hormone glands produce substances that control processes in your body.

The nervous system works together with the endocrine system.

What are hormones?

Notes:

• hormones=substances that control the functioning of organs
• hormones travel in the bloodstream
• hormones are produced by the endocrine glands

Regulating the glucose level

Notes:

• Islets of Langerhans produces insulin and glucagon
• Blood sugar level = amount of glucose in your blood
• Insulin = changes glucose into glycogen which can be stored in fat and muscles, 
• Glucagon = changes glycogen into glucose when you need energy

Insuline / Glucagon

Insulin vs glucagon

  Notes:                                            Insulin

                                         

                            glucose                                           glycogen

                                                          Glucagon

Feed back - FIg 3 pg. 128

Adrenaline

• Adrenal glands make the hormone adrenaline.
• Adrenaline makes the liver convert glycogen into glucose.
  
• Blood glucose level rises.
• Heart beats faster. 
• You breath faster.
• 'Fight-or-flight' hormone.
• Has a fast, short-term effect. 

Do Q 2 t/m 4, 6 t/m 8