5.7 feeling and 5.8 the nervous system

• Biologie
• Middelbare school
• vwo
• Leerjaar 1

De huid

De huid

the skin

THE SKIN IS THE BIGGEST ORGAN OF OUR BODY

1. TRUE
2. FALSE

Skin, nails, hair together are part of the...

1. Integumentary system
2. Circulatory system
3. Respiratory system
4. Skeletal system

the skin - sensory organ

• touch
• pressure
• temperature
• pain

the skin - protection

• epidermis - protection against bacteria and toxins
• dermis - produces sweat, oil, grows hairs, brings blood contains sensory receptors
• subcutaneous fat - protection muscles and bones, controls body temperature
• 
  

epidermis

dermis

sebaceous gland

subcuntaneous tissue

hair

sweat gland

assignment

read paragraph 5.7 and write down the difficult words

homework: 35 till 38

but first review your answers to paragraph 5 and 6

5.8 the nervous system

To which organ system does the brain belong?

1. Digestive
2. Respiratory
3. Nervous
4. Skeletal

The central nervous system (CNS)

The central nervous system is divided into two major parts: the brain and the spinal cord.

The Peripheral nervous system 

Spinal cord

The nerves connect the central nervous system to all parts of the body.

Impulses are passed to the brain through nerves in the spinal cord. The spinal cord starts at the brain and ends in the lumbar vertebrae in the lower back. 

Spinal cord

Vertebra

Nerve

How does the nervous system work?

Notes:

Sensory cell receive stimulus from outside (for example chocolate)

Sensory cells                              = impulses                                                                                                                                          

nerves   

  brain    

 muscles

The brain

Cerebrum: processes impulses  + memories

Cerebellum: coordinates your movements + maintains balance. 

Brain stem: connects brain to spinal cord + automatic functions.

CEREBELLUM

CEREBRUM

MEDULLA

THALAMUS

Scan the chapter

Read paragraph 5.8 

Make a list of all the new (difficult) biology words in the paragraph and write down their meaning.

Elevator pitch

You'll have to give a one minute speech about the nervous system with all of the new words.

Practice with your neighbor.

3 students will be randomly selected to give the speech.

Homework

read paragraph 5.8 write down the difficult words

homework: 42 till 44, but first review your homework from last lesson