review lesson CH.5&6

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

K.P.68

Put the organs in the correct order

Air enters the body

Gas exchange

Nasal cavity

Alveoli

Pharynx

Larynx

Bronchi

Bronchioles

Trachea

Thoracic inhalation:

air is sucked into the lungs

intercostal muscles contract

ribs pull the plearul membrane open

the plearul membrane pulls open the lungs

ribs move up

Thoracic exhalation:

air is pushed out of the lungs

intercostal muscles relax

ribs push the plearul membrane closed

the plearul membrane pushes the lungs closed

ribs move down

Abdominal inhalation:

air is sucked into the lungs

abdominal muscles contract

the diaphragm moves down

the plearul membrane pulls open the lungs

the diaphragm pulls the pleural membrane open

Abdominal exhalation:

air is pushed out of the lungs

abdominal muscles relax

the diaphragm  pushes the pleural membrane closed

the pleural membrane pushes the lungs closed

the diaphragm moves up

GAS EXCHANGE

- alveoli

- how does gas exchange happen

- where does it happen

- respiratory diseases

moisture the alveolus

High oxygen concentration.

High carbon dioxide concentration.

one cell layer thick

cappilaries around the alveoli

oxygen goes into the red blood cells

oCarbon dioxide goes into the air

Red blood cell transport gasses

one way valve

As you can see, a valve only opens in one direction

Aorta

pulmonary artery

pulmonary vein

vena cava

right atrium

right ventricle

left atrium

left ventricle

tricuspid valve

aortic  valve

mitral valve

pulmonary valve

septum

apex

What route does paracetamol take before it reaches the brain?

	Wall	Pressure	Speed	Valves
Artery
Vein
Capillary

One cell thick

thick, elastic

thin

high

high

low

low

high to low

high to low

yes

no

no

Large intestine

Skin

Lungs

Kidneys

Carbon Dioxide

Other waste from blood

Undigested food

Salt

Water

Water

Water

Water

Salt

What is the name of part S

1. Red blood cell
2. White blood cell
3. Blood plasma
4. Platelet

The figure at the right is a schematic drawing of a
number of blood vessels: a vein, capillaries,
a lymph vessel and an artery.
Could there be white blood cells at position P in the
drawing? And could there be oxygen at position P?

1. Neither white blood cells nor oxygen
2. Only white blood cells
3. Only oxygen
4. Both white blood cells and oxygen

What is the function of platelets?

1. Heal the wound after other cells stopped the bleeding
2. Let the wound stop bleeding by clotting and covering it
3. Send signals to the blood vessels if they are broken
4. Make sure the blood flows to the wound

Drag the boxes on the right to the correct place in the picture.

Alveolus

Oxygen

Red blood cell

Blood with little oxygen

Blood with lots of oxygen

Air

CO2

Which process is shown in the picture?

1. Diffusion
2. Osmosis
3. Gas exchange
4. Respiration