WHAT DOES RBC DO IN YOUR BODY

 

FUNCTION OF RBC

 

Functions of RBC : transport around the body

One of the key functions of blood is transport. Blood vessels are like networks of roads where deliveries and waste removal take place. Oxygen, nutrients and hormones are delivered around the body in the blood and carbon dioxide and other waste products are removed.

The heart is constantly pumping blood so it is always moving around the body.

Transporting oxygen is a vital role of the red blood cells.

When we breathe in, the millions of air sacs in the lungs fill with fresh oxygenated air. The oxygen then moves into the blood by passing first through the very thin walls of the air sacs and then into the capillaries, which are tiny blood vessels in a network within the lungs.

Red blood cells squeeze through narrow capillaries in single file. Haemoglobin molecules inside red blood cells pick up and carry the oxygen. These oxygen-rich cells travel in the blood vessels from the lungs to the left side of the heart. The blood is then pumped around the body.

Red blood cells are adapted for the transport of oxygen. They are small and flexible so they can fit through narrow vessels, have a bi-concave shape which maximises their surface area to absorb oxygen, have a thin membrane so gases easily diffuse through, and contain haemoglobin which binds to oxygen.

 

RESPIRATION AND ENERGY

     

RESPIRATION AND ENERGY RELEASE 

Glucose and oxygen react together in cells to produce carbon dioxide and water and release energy.

Here is the word equation for aerobic respiration:

glucose + oxygen → carbon dioxide + water + energy

This is called AEROBIC Respiration – because it needs oxygen from air for it to work

RESPIRATION

 

Respiration

The source of the energy required to regenerate ATP is the chemical energy stored in food (e.g. glucose). The cellular process of releasing energy from food through a series of enzyme-controlled reactions is called . Some of the energy released is used to produce ATP. Some of the energy released is lost as heat.

Mammals need to release heat energy from food to keep their body temperature close to the optimum operating temperature for their enzymes.

There are two types of respiration. Aerobic respiration occurs if oxygen is present in the cell.  occurs if oxygen is absent.

Aerobic respiration

The following is a summary word equation for aerobic respiration.

$glucose+oxygen\to carbondioxide+water+energy$

In reality the process of respiration consists of a series of reactions that can be divided into two stages. Stage one takes place in the cytoplasm and stage two occurs in the mitochondria of animal, plant and fungal cells.

 

           EXERCISE AND HEART RATE 

TYPE OF EXERCISE	BREATHING
SITTING	10
WALKING	17
JOGGING	25
SPRINTING	35

 

 

 

 

EXERCISE AND PEOPLE

 

                      AVERAGE PERCENTAGE OF PEOPLE EXERCISING AORUND THE WORLD

COUNTRY	AVERAGE NUMBER OF PEOPLE WHO EXERCISE  (%)
JAPAN	85
IRELAND	70
AFRICA	40
RUSSIA	25
CANADA	2

 

EXERCISE

 

GROUP 1 AND 3 CLICK HERE 

https://sjimish1.blogspot.com/2024/01/exercise-and-people.html

GROUPS 2 AND 4  CLICK HERE 

https://sjimish1.blogspot.com/2024/01/blog-post.html