Correct Option: A  [ Thyroid ]
Remark:
Explanation: The thyroid gland is the largest endocrine gland in the body. It is a butterfly-shaped gland situated in the neck region, just below the larynx. It secretes the hormones thyroxine (Tâ) and triiodothyronine (Tâ), which control metabolism, growth, and energy utilization. The thyroid also produces calcitonin, which helps regulate calcium levels in the blood.
Functions of the Thyroid Gland:
- Regulates metabolic rate (BMR)
- Influences growth and development
- Maintains body temperature and energy balance
- Regulates calcium metabolism via calcitonin
Disorders:
- Hypothyroidism: Leads to goitre, myxedema, or cretinism
- Hyperthyroidism: Leads to weight loss, anxiety, and increased heart rate