The human vertebral column is also referred to as the <u><em>spine or spinal column.</em></u>
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The<u> body / spinous process </u>of a typical vertebra forms the rounded, central portion that faces anteriorly in the human vertebral column.
- The <em>human vertebral column</em> is made of up a group or collection of bones called the<u><em> vertebrae</em></u>.
- In humans, we have a total of <u><em>33 vertebrae. </em></u>
- In <u>males </u>humans, the vertebrae are said to be <u>71 cm long</u> while in <u>females</u> it is <u>61 cm long</u>.
Therefore, the<u> body / spinous process </u>of a typical vertebra forms the rounded, central portion that faces anteriorly in the human vertebral column.
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Answer:
The organs- thymus, tonsil, appendix and spleen constructs the lymphatic organ system and the lymph nodule is the collection of small lymphoid tissue.
Explanation:
The most significant part of immune and vascular system is the Lymphatic system. This system is consisted of some organs, like- spleen, thymus, tonsil and appendix, mainly named as lymphatic organs. These organs contribute to the function of defend in the immune system.
Lymph nodules, however, are the collective small lymphoid tissue. These nodules are found in the area that is exposed to microorganism and it helps in fighting them.
Models are simplified representations of of different complex systems. They also help to study very small or large objects.
Option B, D and E.
Explanation:
Models are very simplified representations of complex systems and organs or structures which are prepared to study those systems by scientists and normal people easily. Many structures of human body like cells or some tissues are very small in structure or microscopic in nature. So studying them are very hard without specific instruments which are not always available. Thus models are made to easily study those structures by scientists and even normal people and students.
Ionic bond is a compound made up of a meta and a non-metal eg NaCl (sodium chloride)
covalent bond is made up of two non-metals eg H2O (water)
