5.2 Touch, smell, taste

• Biologie
• Middelbare school
• havo, vwo
• Leerjaar 1

start task 

5.2 Touch, smell, taste

1. Copy the learning goals to your zuidschrift.
2. Join this LessonUp!

Learning goals: after this lesson you can

- describe the structure and functions of the skin.

- name how you smell different scents and taste different flavours.

Planning

1. review chapter 1: LessonUp Quiz
2. explanation chapter 2 + 4 videos
3. short quiz
4. notes
5. homework

5.1 Perceiving your environment

Leerdoel:

1. I can describe how the senses work and name the senses with their location and stimulus.                       

Review of the previous lesson

SENSE

SENSE ORGAN

STIMULUS

SENSORY 

RECEPTOR

NEURONS

Vision

Light

Eye

Convert stimuli into nerve impulses

Transport nerve impulses 

Form a connection between the senses and the brain

1

2

3

4

Sound stimuli reach the ears

Sensory cells in the ear change stimuli into impulses

Impulses move through nerves, towards the brain

The person is aware of the sound

Sense

Stimuli

Music

Taste

Sweet candy

Sight

Light

Hearing

Smell

Itchy sweater

Which term is described here:

Electrical signal that is sent from the senses through nerves to the brain.

1. sense
2. sensory cells
3. impuls
4. stimulus

Which sensory organ is indicated by the arrow?

1. sense of hearing
2. sense of pressure
3. sense of sight
4. sense of balance

A fly walks across your cheek

In winter, your hands get cold while cycling

You are standing under the warm shower

You feel that your shoes are tight

Touch receptor

Cold receptor

Heat receptor

Pressure receptor

5.2 Touch, smell, taste

Learning goals

1. I can describe the structure and functions of the skin.
2. I can name how you smell different scents and taste different flavours.                                                                                                                                                                                                                                                                                                                                                                                           

FEELING: Skin

Braille: blind people read with their fingertips.

Fingertips are very sensitive.

skin

skin

Zintuigen in de huid

Tastzintuigen: reageren op lichte aanrakingen van de huid. Tastknopjes. Ruw, glad.

Drukzintuigen: dieper in de huid. Regelen bv. kracht waarmee je iets vastpakt. 

Warmtezintuigen: Reageren als je huid in aanraking komt met iets dat warmer is dan je huid.

Koudezintuigen: Reageren als je huid in aanraking komt met iets dat kouder is dan je huid. 

Pijnpunten: komen overal in je lichaam voor. 

5.2 Voelen, ruiken en proeven.

Sense of smell

• Covered with nasal mucous membrane
• At the top of the nasal cavity, the olfactory sensory cells with olfactory cilia
• Smell is the stimulus

smell

• Different types of olfactory sensory cells.
• Each type is sensitive to a particular odorous substance.
• The impulses are sent to the brain.
• Your brain 'translates' these impulses and you smell the scent.

sense of taste

Salty

Sweet

Sour

Bitter

Umami

Where in the skin are the sensory cells and nerves located with which you feel?

1. dermis
2. basal layer
3. corneal layer
4. subcutaneous connective tissue

A sensory organ responds to influences from the environment. What do we also call such an influence?

1. perception
2. pain receptor
3. stimulus
4. impuls

What is the corneal layer of your skin important for?

1. to keep in heat
2. to produce sweat
3. To protect your body against dehydration and bacteria
4. to produce new skin cells

Which combination ensures that you taste a flavor well?

1. tongue + skin
2. tongue + ears
3. eyes + nose
4. nose + tongue

📝 Touch, smell, taste

The skin consists of:

• Epidermis (protects) -->
• Dermis (sensory organs and glands)
• Subcutaneous connective tissue (insulation)

Sebum keeps the skin flexible

Sweat helps with cooling

Taste: sweet, sour, salty, bitter, umami + smell!

- corneal layer

- basal layer

What	1. Read pp 94-96 first. 2. Do exercises 1-8 (skip 5) (pp 96-99)
How
Help	.
Done?	Check and correct (Classroom). Test yourself + flashcards BvJ online.

1. Book: Use the text and images from pages 94-96
2. Neighbour
3. Teacher

You may quietly work together with your neighbour.

Conversations be about the exercises.

Learning goals: after this lesson you can

- describe the structure and functions of the skin.

- name how you smell different scents and taste different flavours.

Wat	Maak opdrachten 1 t/m 8 blz 92-97
Hoe
Hulp	.
Klaar?	Nakijken en verbeteren (Classroom). Test jezelf + flistkaarten in Bvj online.

1) boek: gebruik de tekst en afbeeldingen van blz. 90-92  

2) buur  

3 ) docent

Je mag fluisterend samenwerken met je buur. 

Gesprekken gaan alleen over de opdrachten.

Leerdoelen: na deze les kun je

- de bouw en functies van de huid beschrijven. 

- benoemen hoe je verschillende geuren ruikt en verschillende smaken proeft.   

Weten jullie nog?