blood is pumped to the arteries by the heart at high pressure
blood pressure in veins is reduced by capillary resistance
arteries have narrow lumen which maintains high pressure/veins have wide lumen which reduces pressure
arteries have more/thicker muscular walls which generate pressure/veins have less/thinner muscular walls which reduce pressure
Mohaissack answered the question on October 4, 2017 at 14:31
- State the ways in which the composition of blood in the pulmonary arterioles differs from that in the pulmonary venules(Solved)
State the ways in which the composition of blood in the pulmonary arterioles differs from that in the pulmonary venules
Date posted: October 4, 2017. Answers (1)
- Describe the structure and functions of the blood vessels(Solved)
Describe the structure and functions of the blood vessels
i. Arteries
ii. Cappilaries
iii. Veins
Date posted: October 4, 2017. Answers (1)
- Explain why blood leaving the lungs may not be fully oxygenated(Solved)
Explain why blood leaving the lungs may not be fully oxygenated
Date posted: October 4, 2017. Answers (1)
- Explain how the mammalian heart is adapted to performing its functions(Solved)
Explain how the mammalian heart is adapted to performing its functions
Date posted: October 4, 2017. Answers (1)
- Describe the structure and function of the mammalian heart(Solved)
Describe the structure and function of the mammalian heart
Date posted: October 4, 2017. Answers (1)
- Distinguish between single circulatory system and double circulatory system(Solved)
Distinguish between single circulatory system and double circulatory system
Date posted: October 4, 2017. Answers (1)
- What are the advantages of the closed circulatory system over open circulatory system?(Solved)
What are the advantages of the closed circulatory system over open circulatory system?
Date posted: October 4, 2017. Answers (1)
- List the components of animal transport systems(Solved)
List the components of animal transport systems
Date posted: October 4, 2017. Answers (1)
- Describe an experiment you would carry out in order to demonstrate that phloem transports manufactured food substances in a plant(Solved)
Describe an experiment you would carry out in order to demonstrate that phloem transports manufactured food substances in a plant
a. Ringing Experiment
b. Use the radio-tracers
c. Collecting exudate from stylets of aphids
Date posted: October 4, 2017. Answers (1)
- Explain how aquatic and terrestrial plants are adapted to deal with problems of transpiration
(Solved)
Explain how aquatic and terrestrial plants are adapted to deal with problems of transpiration
a. Mesophytes
b.Xerophytes
c.Hydrophytes
Date posted: October 4, 2017. Answers (1)
- State the importance of transpiration to plants(Solved)
State the importance of transpiration to plants
Date posted: October 4, 2017. Answers (1)
- Name the sites through which transpiration takes place in a plant(Solved)
Name the sites through which transpiration takes place in a plant
Date posted: October 4, 2017. Answers (1)
- Name the transport structures of a flowering plant(Solved)
Name the transport structures of a flowering plant
Date posted: October 4, 2017. Answers (1)
- State the differences between the internal structure of a root and a stem.(Solved)
State the differences between the internal structure of a root and a stem.
Date posted: October 4, 2017. Answers (1)
- State the similarities and differences between a dicotyledonous and monocotyledonous root
(Solved)
State the similarities and differences between a dicotyledonous and monocotyledonous root
Date posted: October 4, 2017. Answers (1)
- Describe the structure and function of root hair(Solved)
Describe the structure and function of root hair
Date posted: October 4, 2017. Answers (1)
- Explain the necessity of transport in plants and animals(Solved)
Explain the necessity of transport in plants and animals
Date posted: October 4, 2017. Answers (1)
- Define the term species(Solved)
Define the term species
Date posted: October 4, 2017. Answers (1)
- How does a DNA molecule code for a protein. Describe the process completely.(Solved)
How does a DNA molecule code for a protein. Describe the process completely.
Date posted: October 4, 2017. Answers (1)
- Describe the process of DNA replication(Solved)
Describe the process of DNA replication
Date posted: October 4, 2017. Answers (1)