unit 5 basics 3 hearing and sight

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

B3 Hearing

Planning

1. Short revision 
   
   
2. Basics 3   Hearing and sight 

What's the name for information from the surrounding that can be picked up by sense organs?

1. Nerve
2. Impulse
3. Stimulus
4. Touch receptor

Match the correct adequate stimulus to the sensory organ

Sound

Taste

Light

Smell

gentle contact is the stimulus for?

1. our sense of taste
2. our sense of smell
3. our sense of touch
4. our sense of hearing

Put in the most logical order:
-impulse -stimulus -sensory cell -brain

1. stimulus-impulse-sensory cell-brain
2. impulse-brain-sensory cell-stimulus
3. sensory cell-impulse-brain-stimulus
4. stimulus-sensory cell-impulse-brain

In our skin we have .... different types of sensory cells

1. 1
2. 2
3. 3
4. 4

Basics 3 Hearing and sight

Learning objective: 

- You must be able to state the parts of the EAR with their functions and characteristics.

- You must be able to state the parts of the EYE with their functions and characteristics.

B3 Hearing

How does this sound change??

1. From quiet to loud
2. From loud to quiet
3. From high pitch to low pitch
4. From low pitch to high pitch

How does this sound change?

1. From quiet to loud
2. From loud to quiet
3. From high pitch to low pitch
4. From low pitch to high pitch

sound is picked up by the auricle

air in the auditory canal vibrates

The eardrum vibrates

ossicles vibrate

the membrane (oval window) vibrates

fluid in the cochlea vibrates

sensory cells are being stimulated

impulses are made

the auditory nerve brings impulses to the brain

The tympanic cavity (middle ear) is connected to the back of the throat. When you have laryngitis bacteria can reach the middle ear through this connection and can cause an middle earinfection. At which spot will the infection be?

1. S
2. R
3. Q

Wow, difficult! Easy peazy

😒🙁😐🙂😃

Revision 

What did we talk about:

• Pitch and volume
  
• Parts of the ear
• Functions of the parts

5.3 vision

Lesson plan

• Questions (prior knowledge)
  
• Explanation 5.3
•  Work on 5.3: exercise: 9-12 

Homework for tomorrow: study 5.3 + do exercises 5.3 + finish wordlist

eyelid

tearduct

tear gland

eyebrow

eyelash

iris

retina

sclera

cornea

pupil

optic nerve

lens

The eye

Notes

• Eyebrow (wenkbrauw): Protects the eye against sweat and other liquids (vloeistoffen)

• Eyelashes (wimpers): protects the eye against dirt and bright light

• Sclera (harde oogvlies): white of the eye. The eye muscles are attached to the sclera

• Pupil: The pupil lets light into the eye.

Pupil reflex

Pupil gets smaller in bright light

Pupil gets bigger in dim light

https:

retina

Cones are for: Color (red / blue / green)

Rods are for: Light (black / white)

retina

cones work well in bright light

rods function in dim light

the fovea is the most sensitive part (lots of cones)

retina

retina

blind spot/optic nerve

kidshealth.org

https:

(-) minus lenses

(+) plus lenses

kidshealth.org

Which part of the eye is responsible for converting light into electrical signals?

1. Cornea
2. Retina
3. Optic Nerve
4. Choroid

What is the name of the part of the eye that controls the size of the pupil?

1. Sclera
2. Cornea
3. Retina
4. Iris