The Blood And Circulatory System

Question 1

Circulatory system

Answer 1

The blood
The heart
The vascular system

Question 2

Blood is composed of what?

Answer 2

45% is blood cels

-Erythrocytes - red blood cells, distribute oxygen to the cells of the body. Remove carbon dioxide form cells.

-Leucocytes - white blood cells, they kill invaders, such as bacteria

-Thrombocytes - Platelets, these are cell like structures that stick together to help form blood clots.

55% plasma

• water 90%
• take nutrients, hormones and proteins to the parts of body that need it
• Electrolytes
• immunoglobulins

Question 3

The blood vessels

Answer 3

-Blood circulates around the body in blood vessels.
-The heart pumps the blood to the lungs, where it is oxygenated
-It then returns to the heart and is circulated throughout the body by the arteries
- The oxygen passes through tiny blood vessels called capillaries
- It then returns to the heart through the veins.

Question 4

Functions of blood

Answer 4

-Transport of various gases, nutrients, hormones and waste.
-Regulation of water in the body and body temperature
-Protection against infection
-Clotting prevent blood loss

Question 5

Effect of massage on blood circulation

Answer 5

Massage increases the amount of blood flow into the area.
Reddening of the skin is seen.
(Erythema)

Question 6

Blood flow to the face and head

Answer 6

Arteries
-Internal carotid artery
-External carotid artery
-Common carotid artery

Question 7

Veins

Answer 7

External Jugular
Internal Jugular

Question 8

The lymphatic System

Answer 8

-The purpose of the lymphatics system is to collect germs, bacteria and waste that are in the body.
-It then Carrie’s these to the lymph nodes, where the lymph is filtered and made harmless
- it also takes digested fat away from the digestive system.
-It prevents tissues from becoming water logged.

Composition of Lymph

• fluid
• proteins
• waste products: toxins, carbon dioxide, urea.
• oxygen
• lymphocytes
  -fats