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What is adenohypophysis? - Biology

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Question

What is adenohypophysis?  

Answer in Brief

Solution

  1.  It is an outgrowth from the roof of the buccal cavity. This outgrowth is called Rathke’s pouch. It grows upwards towards the brain.
  2. It is the larger lobe of the pituitary gland. It is a highly cellular and vascular part of the pituitary gland. It contains various types of epitheloid secretory cells, acidophils, basophils, chromatophores.
  3. It is further divided into three parts - Pars distalis, pars tuberalis, and pars intermedia. Pars intermedia is poorly developed in human beings.
  4. It is a small reduced part lying in the cleft between the anterior and posterior lobe.
  5. It secretes Melanocyte Stimulating Hormone (MSH) in some lower vertebrates. MSH stimulates the dispersion of melanin granules in melanocytes and is responsible for skin pigmentation.
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Human Endocrine Glands - Pituitary Gland or Hypophysis Gland
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Chapter 9: Control and Co-ordination - Exercises [Page 220]

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Balbharati Biology [English] 12 Standard HSC Maharashtra State Board
Chapter 9 Control and Co-ordination
Exercises | Q 7.09 | Page 220
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