5.4 nervous system

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

start task 5.4 the nervous system

1. Open your book to page 110.
2. Copy the learning goals.
3. Log in to LessonUp.

Goals: you can...

- describe the structure and functions of the nervous system.

- describe the structure of nerve cells and nerves.

Lesson Plan

1. Review: LessonUp quiz – 10 minutes
2. Read together + take notes – 20 minutes
3. Complete the assignments – 10 minutes

Organ that responds to a stimulus from the environment

Stimulus from the environment

Are located in a sense organ

Electrical signals

Carry impulses to the brain

sense organ

stimulus

sensory cells

Impulses

nerves

Iris

sclera

Pupil

tear duct

tear gland

eyebrow

The part of your eye around the iris.

The colored part of your eye.

Black hole in your eye.

Produces tear fluid.

Protects your eye from dust and sweat.

Carries away dust and dirt to your nose.

retina

optical nerve

lense

sclera

choroid

sclera

retina

chroroid

Detects light stimuli.

protects everything inside the eye.

contains the blood vessels that transport substances needed by the eye.

The ear’s job is to detect stimuli. What is the stimulus for the ear?

1. light
2. sound
3. impulse
4. taps

Sound vibrations enter your ear.
In what order do the vibrations pass through the parts of your ear?

1. Eardrum – auditory ossicles – cochlea.
2. Eardrum – cochlea – auditory ossicles.
3. Auditory ossicles – eardrum – cochlea.
4. Cochlea – eardrum – auditory ossicles.

5.4 the nervous system

Laptop away

Notebook and pen ready!

Goals: you can...

- describe the structure and functions of the nervous system.

- describe the structure of nerve cells and nerves.

The nervous system:

• brain
• spinal cord

•  nerves

central nervous system

functions of the nervous system

• Processing impulses from sense organs
• Controlling muscles and glands

nerve cell

• A cell body with a nucleus
• Axons that carry impulses away from the cell body or toward the cell body.

nerve

A bundle of nerve cell axons with an insulating layer.

What	Do exercises 1, 2, 3a, 5 and 6 (pp 114-116 )
How
Help	.
Done?	Homework: finish Check and correct (classroom).

1. Book: Use the text and images from pages 110-112
2. Neighbour
3. Teacher

You may quietly work together with your neighbour.

Conversations be about the exercises.

- describe the structure and functions of the nervous system.

- describe the structure of nerve cells and nerves.