Table of Contents
- 1 In which of the following organisms does blood flow from the lungs circulation to the heart before circulating through the rest of the body?
- 2 Which sequence of blood flow can be observed in either a reptile or a mammal?
- 3 Which organism has a closed circulatory system?
- 4 How are gases transported in insect bodies?
- 5 How is the circulation of blood in fish different from that in humans?
In which of the following organisms does blood flow from the lungs circulation to the heart before circulating through the rest of the body?
In amphibians, reptiles, birds, and mammals, blood flow is directed in two circuits: one through the lungs and back to the heart, which is called pulmonary circulation, and the other throughout the rest of the body and its organs including the brain (systemic circulation).
What Animals use diffusion instead of a circulatory system?
Some animals use diffusion instead of a circulatory system. Examples include: birds and jellyfish. flatworms and arthropods.
Which sequence of blood flow can be observed in either a reptile or a mammal?
bio 2 test 1
| Question | Answer |
|---|---|
| Through ho w many capillary beds must a human red blood cell travel if it takes the shortest possible route from the right ventricle to the right atrium? | two |
| Which sequence of blood flow can be observed in either a reptile or a mammal? | vena cava → right atrium → ventricle → pulmonary circuit |
How does the design of the circulatory network contribute to reducing blood pressure?
How does the design of the circulatory network contribute to reducing blood pressure to avoid this scenario? The total cross-sectional diameter of the arterial circulation increases with progression from artery to arteriole to capillary, leading to a reduced blood pressure.
Which organism has a closed circulatory system?
Examples of animals with a closed circulatory system are annelids and vertebrates (including humans). Humans have a cardiovascular system comprised of heart and blood vessels that circulate blood throughout the body and another system for circulating lymph called lymphatic system.
What animals have an open circulatory system?
These open systems are found primarily in arthropods and mollusks. Arthropods are a group of animals that includes insects and crustaceans. Mollusks are organisms such as clams, snails, and oysters. So something like a dragonfly, lobster, or sea scallop would possess an open circulatory system.
How are gases transported in insect bodies?
Capillary beds are the site of nutrient and oxygen delivery to tissues. How are gases transported in insect bodies? simple diffusion of oxygen into the salamander from the water.
Which sequence of blood flow can be observed in humans?
Blood comes into the right atrium from the body, moves into the right ventricle and is pushed into the pulmonary arteries in the lungs. After picking up oxygen, the blood travels back to the heart through the pulmonary veins into the left atrium, to the left ventricle and out to the body’s tissues through the aorta.
How is the circulation of blood in fish different from that in humans?
In humans, the right side of the heart receives deoxygenated blood and the left side receives oxygenated blood. In fishes, the deoxygenated blood flows once through the heart which is called single circulation.
Which organism has a closed circulatory system Octopus?
Organisms belonging to sepia are mollusks but they have a closed circulatory system. Therefore octopuses have a closed circulatory system. Pheretima belongs to the phylum Annelids.