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प्रश्न
What is adenohypophysis?
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उत्तर
- It is an outgrowth from the roof of the buccal cavity. This outgrowth is called Rathke’s pouch. It grows upwards towards the brain.
- 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.
- It is further divided into three parts - Pars distalis, pars tuberalis, and pars intermedia. Pars intermedia is poorly developed in human beings.
- It is a small reduced part lying in the cleft between the anterior and posterior lobe.
- 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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संबंधित प्रश्न
Give the special function of the following:
Gonadotrophic hormone
Identify the exocrine gland.
The pituitary gland is divided into four lobes.
Hypersecretion of which hormone is the cause of Acromegaly?
State whether true or false:
Pars distalis produces six trophic hormones.
What is the role-played by luteinizing hormones in males and females respectively?
Where is pituitary located?
Mention if the following statement is true (T) or false (F). If false, rewrite the correct word (not words) striking out the single wrong one.
Pituitary is of the size of a lemon.
Mention if the following statement is true (T) or false (F). If false, rewrite the correct word (not words) striking out the single wrong one.
Oversecretion of growth hormone in adult causes gigantism.
Name the following:
Abnormalities caused due to hypersecretion of growth hormone.
