6.2 + 6.3 The skin + Nose and tongue

• Biologie
• Middelbare school
• vwo
• Leerjaar 1

Today

• Check what you remember from last week
• Homework check + discuss questions
• Explaination 6.2 and 6.3
• Time to work on assignments 7, 8, 9 and 11

Sense organs send signals through the nerves to the ...

1. eyes
2. ears
3. brain
4. muscles

Match the correct adequate stimulus to the sensory organ

Sound

Taste

Light

Smell

What do we call the lowest intensity that can cause an impuls?

1. Adequate stimulus
2. Threshold value
3. impulse
4. habituation

If a stimulus does not go away for some time, it starts producing less impulses in the cell. What do we call this?

1. Adequate stimulus
2. Threshold value
3. impulse
4. habituation

After this lesson you'll know

• The parts of the skin and their function
• The parts of the nose and the tongue
• How taste and smell works in your body

6.2 The skin

Epidermis

Corneal layer - dead cells

Basal layer - living cells that keep on dividing

Dermis

Blood vessel

Glands (klieren)

Muscles 

Hair

Receptors + nerves

Sensory receptors

6.3 The nose 

And the tongue

In which skin layer are the sensory receptors located?

1. Basal layer
2. Epidermis
3. Dermis
4. Corneal layer

Your skin is 33°C, you take a shower and the water temperature is 25°C. Which receptors will send an impulse to the brain?

1. Pressure receptor
2. Cold receptor
3. Heat receptor

Your nose plays an important role in how you taste things

1. True
2. False

You have different taste buds for every taste (sweet, salt, bitter, sour)

1. True
2. False

Let's do some work

Read 6.2 & 6.3 (page 56 until 59) in your (online) textbook

Make assignment 7, 8, 9 and 11 online