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Option 1 : Adrenal, ovaries
The correct answer is Adrenal, Ovaries.
Concept:
- Endocrine glands are ductless glands, i.e., lack ducts.
- They release their secretion into the surrounding bloodstream for transport to the site of action or a distant target organ.
- Examples: Hypothalamus, Pituitary gland, Thyroid gland, Adrenal gland, Ovaries, etc.
Explanation:
- Adrenal Gland:
- In human beings, Adrenal glands are present in pairs.
- Each gland is located at the anterior portion of each kidney.
- Adrenal glands are conical yellowish bodies composed of two types of tissues i.e., Adrenal cortex and Adrenal medulla.
- Ovaries:
- These are the primary sex organ in females that serve to produce ova (female gametes) and female sex hormones.
- A pair of ovaries are located in the pelvic cavity (in the abdomen).
- It is an almond-shaped structure.
- While Thyroid gland, Pancreas, and Pituitary gland are not present in pairs in human beings.
Thus, Adrenal gland and Ovaries occur in pairs in human beings.
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