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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
Name the following:
The hormone causing more urine formation
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
The pituitary gland is both exocrine and endocrine in function.
Give the names of the hormones released by neurohypophysis.
A boy shows excessive thirst and micturition because of deficiency of a hormone secreted by neurohypophysis. Name the disease he is suffering from.
The pituitary gland is divided into four lobes.
State the names of hormones and glands secreting them:
Controls tubular absorption of water in the kidney.
Match the hormones with their source :
| Column A | Column B | ||
| (1) | Glucagon | (i) | Neurohypophysis |
| (2) | Adrenaline | (ii) | Islets of Langerhans |
| (3) | Somatotropins | (iii) | Adenohypophysis |
| (4) | ADH | (iv) | Medulla |
Name the gland that causes following disorder:
Acromegaly
Hypersecretion of growth hormone causes ______.
Name the following:
Six hormones secreted from anterior pituitary.
The diagram given alongside shows an endocrine gland in the human body. Study the diagram and answer the following questions:
 |
- Identify the gland. Write its specific location in the human body.
- Label the guidelines 1, 2 and 3 shown in the figure.
- Name any two secretions from part 1 and two from part 2.
- The deficiency of which hormone causes Diabetes insipidus? How is this condition different from Diabetes mellitus with respect to the abnormal substances present in the of urine.
