6.3 - Nose and tongue

• Biologie
• Middelbare school
• havo, vwo
• Leerjaar 2

Today's lesson

1. Review a few HW questions

2.Review 6.1 and 6.2

3. Start on 6.3 - Nose and Tongue

Q6 - Responding to your surroundings

• Toothache is only noticed when the sensation exceeds the threshold for pain. This pain threshold changes over the course of the day. Omar has a cavity in his tooth. His tooth hurts when he eats anything cold. One day, he ears an ice cream at 9am and another at 4pm. Why does he feel pain in the affected tooth more quickly at 9am than at 4 pm?

• Pain threshold is lower at 9am than it is at 4pm.

Q6 - The skin

The figure shows you a photo of some bacon. Bacon is a cut of meat taken from a pig. A slice of bacon consists of a rind, a fatty part and a lean part. List the following parts using the words subcutaneous tissue, muscle tissue, epidermis and dermis

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

6.3 Nose and Tongue

Review the skin

Discuss the parts and functions of the nose

Discuss the parts and functions of the tongue

The nose:

- hairs filter out dirt

- snot catches dust and germs

our nose helps us to smell and to taste

if you  break your nose you could lose your sense of smell.

 The nose 

Mucus

Dust and germs get trapped

Cilia (little hairs) move it up your nose an throat

Your nose plays an important role in how you taste things

1. True
2. False

the

Nose

adequate

Impulses

WHAT TYPE OF BREATHING IS BETTER FOR YOUR HEALTH?

1. BREATHING THROUGH YOUR NOSE
2. BREATHING THROUGH YOUR MOUTH

TO WHICH ORGAN SYSTEM DOES THE NOSE BELONG?

1. MUSCULAR
2. RESPIRATORY
3. CIRCULATORY
4. SKELETAL

The Tongue:

- we taste only four things

- our nose does most of the tasting

- babies instinctively do not like bitter or sour flavours (protection) 

- your tongue is very strong and made up of 8 muscles

And the tongue

Which types of taste can your tongue distinguish?

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

1. True
2. False

The Tongue:

What did you learn during this lesson?