Endocrine system

• Biologie
• Middelbare school
• vwo
• Leerjaar 1

Program

Repetition

Explanation hormones

 bloodglucose level, and the brain

Practical activity

A cat hunts a mouse

1. hunting behaviour = learned Hunger = internal stimulus
2. hunting behaviour = a hereditary factor Hunger = internal stimulus
3. hunting behaviour = learned Hunger = external stimulus
4. hunting behaviour = a hereditary factor Hunger = external stimulus

What is the difference between a reflex and a controlled action when looking at the pathway of the impulses

Learning goals

You can name the different hormonal glands

You can name the differences between hormones and nerves

You can describe how the blood glucose level is maintained

What are hormones?

• Signalling substances produced in
  endocrine glands
• Hormones are transported via blood
• Hormones control all different types of
  processes 

hormones

nerves

direct effect

long-term effect

short term effect

transport via blood

produced in glands

 muscles contraction

work slow

After dinner your stomach produces gastric acid (maagzuur)
This is controlled by the:

1. Nervous system
2. Endocrine system

When you chew your food. This is controlled by the:

1. nervous system
2. Endocrine system

After dinner you walk to the bath room. This is controlled by the:

1. Nervous system
2. Endocrine system

Program

Reminder Practical Activity

Homework

Explanation blood glucose & the brain

Start with unit 7

Hormones

Regulation of the blood glucose (sugar) level

Hormones produced in the pancreas- Islets of Langerhans

insulin: 

• uptake of glucose from the blood into the cells 
• storage of glycogen (glucose) in the muscles and liver. ​
  

Glucagon:

changes glycogen into glucose

​

Glucagon: ensures that glucose from the liver and muscles is released into the blood. ​

​

You eat a hand full of sweets. The sugar will be taken up into the blood. Which hormone will be released to normalize the blood glucose level?

1. Insulin
2. Glucagon

WHAT HORMONE CONVERTS GLYCOGEN INTO SUGAR

1. INSULIN
2. PANCREAS
3. GLUCAGON
4. LIVER

What is the name of the disease when the Islets of Langerhans don't produce enough insulin?

Brain

Brain is part of the Central Nervous system

Main parts:

Cerebrum

Cerebellum

Brain stem

Why is it especially harmful for teenagers to drink alcohol

Next week

Formative test about unit 6