¿Qué es una costra?

The video explains the formation and function of scabs. It begins by introducing scabs as a common occurrence from injuries like scrapes and scratches. The video then delves into the components of blood, highlighting the roles of red blood cells, white blood cells, and platelets. It explains how platelets are crucial in forming scabs to stop bleeding and protect the wound. Finally, the video describes how scabs aid in the healing process by allowing new skin cells to grow, eventually leading to the scab falling off and the skin being repaired.

Where are scabs commonly found on the body?

• On the face

• On the knees and elbows

• On the feet

• On the back

What is the primary function of red blood cells?

• To form scabs

• To stop bleeding

• To fight diseases

• To bring oxygen to the body

Which type of blood cell is responsible for fighting diseases?

• Platelets

• White blood cells

• Skin cells

• Red blood cells

What role do platelets play when a cut occurs?

• They bring oxygen to the cut

• They fight infections

• They form a scab to stop bleeding

• They create new skin cells

What happens under a scab as it heals?

• The scab spreads to other areas

• The scab changes color

• New cells begin to grow

• The scab becomes thicker