Respiratory system

Respiratory system

Hemoglobin and myoglobin

Multiple Choice

•When oxygen binds to haemoglobin, it forms

• OXYHAEMOGLOBIN;

• DEOXYHAEMOGLOBIN

•OXYHAEMOGLOBIN;

When oxygen binds to haemoglobin

Open Ended

What role does Partial Pressure play in hemoglobin combining with oxygen?

HOW MUCH OXYGEN CAN COMBINE WITH HAEMOGLOBIN?

• This depends on the PARTIAL PRESSURE of oxygen (PO2).
• IF PO2 is High = Haemoglobin will readily combine with oxygen to form oxyhaemoglobin.
• When the haemoglobin combines with the oxygen to form oxyhaemoglobin, the haemoglobin is said to be saturated with oxygen.

Open Ended

Explain the role of Myoglobin

Myoglobin

• •In the muscle, oxygen is stored by MYOGLOBIN.

  This has a high affinity for oxygen and stores the oxygen until it can be transported from the capillaries to the mitochondria

• THE MITOCHONDRIA ARE THE SITES IN THE MUSCLE WHERE AEROBIC RESPIRATION TAKES PLACE. 

Multiple Select

A factor affecting hemaglobin saturation

• The cardiac control centre

• Inspiration

• Decrease in blood acidity (pH)

• Increase in partial pressure of Carbon Dioxide concentration