Question

Explain the differences.
a. Arteries and veins.
b. External and internal res​

Answer 1

Explanation:

Arteries are blood vessels responsible for carrying oxygen-rich blood away from the heart to the body. Veins are blood vessels that carry blood low in oxygen from the body back to the heart for reoxygenation.

metabolizing tissues. External Respiration: External respiration refers to the gas exchange across the respiratory membrane of lungs. Internal Respiration: Oxygen diffuses out from the blood into tissue during internal respiration.

Answer 2

Arteries and veins

• Arteries carry blood from the heart to various body parts. Veins carry blood from different body parts to the heart.
• Arteries carry oxygenated blood(except the pulmonary artery). Veins carry deoxygenated blood (except the pulmonary vein).
• Blood flows with high speed under high pressure. Blood flows with low speed under low pressure.

Internal and External Respiration

• The internal respiration depicts the gas as being exchanged across the respiratory membrane in the metabolizing tissues. In external respiration, depicts the gas as being exchanged across the respiratory membrane of lungs.
• Internal respiration occurs in every cell. Where the oxygen is used in the mitochondria inside the cell so the energy can be released. The external respiration is the act of breathing. When we inhale, the air containing oxygen enters the lungs. From the lung, then it is carried to the cells through the bloodstream. In the same way, the carbon dioxide is released when we exhale.
• The internal respiration can be found in every living organ. The plants and animals, both do the internal respiration. The external respiration only occurred in the cases of animals. The respiration can’t be seen in plants. Through stomata, the oxygen is absorbed at the time of photosynthesis.

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