Question

In: Anatomy and Physiology

Membrane bones include: Mandible. Maxilla. Foot bones. All of the above are true. Only a +...

  1. Membrane bones include:
  1. Mandible.
  2. Maxilla.
  3. Foot bones.
  4. All of the above are true.
  5. Only a + b are true.

  1. Elastic Cartilage:
  1. Can be temporarily deformed without being structurally damaged.
  2. Is present at the junctions between Ribs and Sternum.
  3. When unstained is yellow in colour.
  4. All of the above are true.
  5. Only a + c are true.

  1. Lymph Nodes:
  1. Are similar to Lymphatic Nodules.
  2. Are surrounded by a capsule of loose connective tissue.
  3. Contain Reticular cells and Reticular fibers.
  4. None of the above is true.
  5. Only b + c are true.

Solutions

Expert Solution

The right choice is: (e)

Jaws and skull is membrane bone. Mandible is lower jaw and Maxilla is upper jaw. Membrane bone are developed from intramembranous ossification instead of developing from cartilage. Hence only (a) and (b) is true.

The right choice is: (e)

Elastic cartilage is yellow cartilage which contains elastin protein, elastic fibres and Type 2 collagen fibers. This provides elasticity and flexibility to the cartilage. Elastic fibres are present in epiglottis, nose and outer ear. Hence choice (a) and (c) are true.

The right choice is: (e)

Lymph nodes are enclosed in a fibrous capsule of connective tissue and has reticular cells and reticular fibres. Lymph nodes are different from lymphatic nodules because lymphatic nodules do not have capsule of connective tissue and they are smaller in size when compared to Lymph node. Hence choice (b) and (c) is true.


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