Pharyngeal or Branchial Arches

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Questions and Answers

Which of the following best describes the branchial apparatus?

  • A system in fish embryos only for respiration.
  • A phase of development at the 8th week in human embryos.
  • A structure in humans similar to gills in primitive chordates. (correct)
  • A group of bones that completely ossify by the 4th week.

At what stage does a human embryo's head and neck region resemble that of a fish embryo?

  • At the 4th month
  • At the 4th week (correct)
  • At the 2nd week
  • At birth

What is the origin of the term 'branchial'?

  • Greek word meaning 'neck'.
  • Greek word for 'gills'. (correct)
  • Latin word for 'arches'.
  • Roman term for 'head'.

In humans, what is the contribution of the branchial apparatus?

<p>Formation of the head and neck region. (A)</p> Signup and view all the answers

Which of the following does NOT constitute part of the pharyngeal apparatus?

<p>Pharyngeal grooves (B), Pharyngeal clefts (C)</p> Signup and view all the answers

The branchial apparatus in primitive chordates is associated with respiration and feeding.

<p>True (A)</p> Signup and view all the answers

The term 'branchial' is derived from the Latin word meaning gills.

<p>False (B)</p> Signup and view all the answers

In humans, the branchial apparatus forms part of the digestive system.

<p>False (B)</p> Signup and view all the answers

Pharyngeal pouches are a component of the pharyngeal apparatus in humans.

<p>True (A)</p> Signup and view all the answers

The branchial apparatus in a human embryo appears different from that in a fish embryo at four weeks.

<p>False (B)</p> Signup and view all the answers

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Study Notes

Pharyngeal or Branchial Arches

  • The head and neck region of a 4-week human embryo resembles that of a fish embryo at the same stage, earning it the term "branchial apparatus".
  • The term "branchial" comes from the Greek word for "gills", which are associated with feeding and respiration in primitive chordates.
  • In humans, the branchial apparatus contributes to the development of the head and neck region.

Pharyngeal Apparatus

  • Consists of two main components:
    • Pharyngeal arches
    • Pharyngeal pouches

Pharyngeal or Branchial Arches

  • The head and neck region of a four-week human embryo resembles that of a fish embryo at the same stage, earning it the term "branchial apparatus".
  • The term "branchial" comes from the Greek word for "gills", which are associated with feeding and respiration in primitive chordates.
  • In humans, the branchial apparatus contributes to the development of the head and neck region.

Pharyngeal Apparatus

  • Consists of two main components:
    • Pharyngeal arches
    • Pharyngeal pouches

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