Advertisements
Advertisements
Question
Distinguish between open circulation and closed circulation.
Advertisements
Solution
| Open circulation | Closed circulation | ||
| 1. | In open circulation, blood is circulated through the body cavities (haemocoels). | 1. | In closed circulation, blood circulates the blood vessels and does not come in direct contact with cells and body tissues. |
| 2. | The blood flows with low pressure. | 2. | The blood flows with high pressure. |
| 3. | Exchange of material takes place directly between blood and cells or tissues of the body. | 3. | Exchange of material between blood and body tissues is through intermediate fluid called lymph. |
| 4. | It usually does not contain any respiratory pigment like haemoglobin so it does not transport respiratory gases | 4. | It contains respiratory pigments like haemoglobin for transportation of respiratory gases. |
| 5. | e.g. Arthropods and molluscs | 5. | e.g. All vertebrates, higher molluscs and annelids |
APPEARS IN
RELATED QUESTIONS
Describe non-cyclic photophosphorylation with schematic representation. Give its significance.
Why does an athlete breathe faster and deeper than usual after finishing the race?
During exhalation, the ribs ______.
Answer briefly the following:
What is the difference between breathing and respiration?
Define Bohr effect and Haldane effect.
Which of the following is formed in RBCs when CO2 combines with H2O in presence of carbonic anhydrase?
Whenever we feel drowsy or sleepy, we start yawning. Does yawning help us in any way?
In HMP shunt, number of molecules of CO2 evolved are ______.
Listed below are four respiratory capacities (1 - 4) and four jumbled respiratory volumes of a normal human adult
| Respiratory Capacities | Respiratory Volumes |
| 1. Residual volume | 2500 mL |
| 2. Vital capacity | 5500 mL |
| 3. Inspiratory sore volume | 1200 mL |
| 4. Total Lung capacity | 4500 mL |
Which one of the following is the correct matching of two capacities and volumes?
Complete the table:
| Partial pressure of gases |
Alveolar air | Pulmonary Capillaries |
| PP02 104 | mm Hg | ______ |
| PPC02 40 | mm Hg | ______ |
