The body - The respiratory system Flashcards

1
Q

Excretory organs

A

Lungs
Skin
Kidneys

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What do the lungs excrete

A

Remove carbon dioxide and waste vapour from body

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What does skin excrete

A

Remove water and salts (sweat)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What do the kidneys excrete

A

Remove waste in form of urine

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

The breathing system

A

Breathe in (inhale), take in oxygen from air.
Combines with food to give energy (oxidation).
Waste products (carbon dioxide + water) formed.
Get rid when breathe out (exhale).

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Structure of the breathing system

A

Air passes through series of pipes as it goes from nose and mouth to lungs.

Passes through nose + mouth, warmed + hairs in nose filter.

Passes through space at back of mouth (pharynx)

Flap of skin (epiglottis) covers opening of trachea to prevent food in.

Passes through larynx (voice box), contains vocal cords.

Travels into trachea (windpipe).

Trachea divides into two tubes (bronchi). Bronchus divides again to form narrow tubes (bronchioli). At end are air sacs (alveoli). Here oxygen reaches blood + carbon dioxide removed.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Position of the lungs

A

In chest.
Like large pink sponges which expand as they are filled with air and shrink as air removed. Surrounded by rib cage, breast bone, back bone.

Heart is between lungs.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Excretion

A

Removal of waste from body

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Function of the lungs

A

Take oxygen in
Remove carbon dioxide
Remove water

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Exchange of gases

A

Alveoli (air sacs) have very thin walls, covered with capillaries (tiny blood vessels).

Oxygen passes from sacs through walls and into blood in capillaries. Carbon dioxide passes from blood into sacs (exchange of gases).

How well did you know this?
1
Not at all
2
3
4
5
Perfectly