☰ Contents · Biology (Human body and health)

First aid for bleeding; Laboratory work 2

Lessons 23–24 · 2 lessons · O. Mavlonov, T. Tilavov, B. Aminov. Biology (Human body and health), Grade 8. Revised and expanded 6th edition. “O‘qituvchi” Publishing and Printing Creative House, Tashkent, 2019
23

First aid for bleeding from vessels

Textbook: pp. 67–68
GoalExplain first aid for bleeding (pressure, calling 103, nosebleed).
New words
capillary bleeding · kapillar qon ketishivenous bleeding · vena qon ketishiarterial bleeding · arteriya qon ketishipressure dressing · bosuvchi bog‘ich
Explanation

Types of bleeding: capillary – oozing over the whole surface; venous – dark red blood flows steadily; arterial – bright red blood spurts in pulses and is very dangerous. First rule: keep yourself safe and call 103 or call an adult. If possible wash your hands and wear gloves (to avoid contact with another person’s blood). Place a clean cloth, bandage or gauze on the wound and press directly and firmly; if the cloth soaks through, do not remove it – add another on top and keep pressing. For an arm or leg, if no bone is broken, the wound can be held above heart level. A tourniquet is applied only by a trained person, in life-threatening bleeding when pressure does not help; an ordinary person should not apply one on their own. For a nosebleed the person sits, leans the head forward and pinches the soft part of the nose for 10 minutes; if bleeding does not stop or follows an injury, go to a doctor. If a bleeding person is pale, dizzy or weak, lay them down, keep them warm and wait for 103. No medicines are given.

Worked examples
A child scrapes a knee: presses with a clean cloth for 10 minutes and shows an adult; if the wound is deep, goes to a doctor.
If blood spurts from a cut leg by a river: call 103 at once, press hard directly and keep the person still.
Class activity

Role play (with adults): practise pressing a clean cloth and bandaging a dummy with a drawn “wound” in red paint. Safety: no sharp objects; do not handle real blood.

Practice
1
Name the three types of bleeding.
2
What is done first for bleeding?
3
What is the correct position for a nosebleed?
4
Why should an ordinary person not apply a tourniquet on their own?