- Presence of valves to prevent back flow of blood;
- Thin walled which are less muscular and have few elastic fibres and wide lumen for blood to flow under low pressure;
johnson mwenjera answered the question on February 10, 2018 at 07:04
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State two structural adaptations of veins to their function.
(Solved)
State two structural adaptations of veins to their function.
Date posted:
February 10, 2018
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Answers (1)
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(a)Name two cardiovascular diseases. (b)If the nerve supply to the heart of a mammal is severed the rhythmic heart contraction and relaxation will go on and...
(Solved)
a)Name two cardiovascular diseases.
(b)If the nerve supply to the heart of a mammal is severed the rhythmic heart contraction and relaxation will go on and heart continues to beat. Explain why.
Date posted:
February 10, 2018
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Answers (1)
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Differentiate between gaseous exchange and ventilation.
(Solved)
Differentiate between gaseous exchange and ventilation.
Date posted:
February 10, 2018
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Answers (1)
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State one adaptation of the following parts of mammalian eye.
(i) Fovea centralis.
(ii) Sclera.
(iii) Cilliary body.
(Solved)
State one adaptation of the following parts of mammalian eye.
(i) Fovea centralis.
(ii) Sclera.
(iii) Cilliary body.
Date posted:
February 10, 2018
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Answers (1)
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List down the roles of lipids in the body
(Solved)
List down the roles of lipids in the body.
Date posted:
February 10, 2018
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Answers (1)
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Give five functions of peptides
(Solved)
Give five functions of peptides
Date posted:
February 10, 2018
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Answers (1)
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Name three animals in phylum chordata?
(Solved)
Name three animals in phylum chordata?
Date posted:
February 9, 2018
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Answers (1)
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Explain physical barriers that mediate natural immunity
(Solved)
Explain the physical factors that mediate natural immunity.
Date posted:
February 8, 2018
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Answers (1)
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Explain the various conditions necessary for germination
(Solved)
Explain the various conditions necessary for germination
Date posted:
February 8, 2018
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Answers (1)
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Name three supportive tissues in plants.
(Solved)
Name three supportive tissues in plants.
Date posted:
February 6, 2018
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Answers (1)
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State two adaptations of Guard cell to its function in plant tissue.
(Solved)
State two adaptations of Guard cell to its function in plant tissue.
Date posted:
February 6, 2018
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Answers (1)
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In which form is carbon (IV) oxide transported in the body.
(Solved)
In which form is carbon (IV) oxide transported in the body.
Date posted:
February 6, 2018
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Answers (1)
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What is the causative agent of cholera?
(Solved)
What is the causative agent of cholera?
Date posted:
February 6, 2018
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Answers (1)
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Describe Amitosis as a type of cell division.
(Solved)
Describe Amitosis as a type of cell division.
Date posted:
February 2, 2018
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Answers (1)
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Define the term Genomic imprinting.
(Solved)
Define the term Genomic imprinting.
Date posted:
February 2, 2018
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Answers (1)
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Define the term incomplete dominance.
(Solved)
Define the term incomplete dominance.
Date posted:
February 1, 2018
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Answers (1)
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Outline eight means of asexual reproduction in organisms.
(Solved)
Outline eight means of asexual reproduction in organisms.
Date posted:
February 1, 2018
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Answers (1)
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Define the term analogous structures in evolution as studied in biology.
(Solved)
Define the term analogous structures in evolution as studied in biology.
Date posted:
January 31, 2018
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Answers (1)
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Define the term biopsy as used in information gathering in diseases.
(Solved)
Define the term biopsy as used in information gathering in diseases.
Date posted:
January 31, 2018
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Answers (1)
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Describe the Kreb's cycle in living cells of an organism.
(Solved)
Describe the Kreb's cycle in living cells of an organism.
Date posted:
January 31, 2018
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Answers (1)