BIOLOGY

 

1. What are the two main hormones secreted by Thyroid gland?
A. T3
B. T4
C. TSH
D. Both A and B
2. Too much release of thyroid hormone in the body causes:
A. Hypothyroidism
B. Hyperthyroidism
C. Goitre
D. None of the above
3. What are the symptoms of release of too much T3 and T4 hormones?
A. Anxiety
B. Nervousness
C. Hair loss
D. All of the above
4. Name a disease causes due to the deficiency of iodine?
A. Thyroid cancer
B. Solitary thyroid nodules
C. Goitre
D. Thyroiditis
5. The symptoms of hypothyroidism are:
A. Dry skin and hair
B. Depression
C. Joint and muscle pain
D. All of the above
ANSWERS:

1. Ans. D

Explanation: The thyroid gland uses iodine from the food to make two main hormones: Triodothyronine (T3) and Thyroxine (T4).

2. Ans. B

Explanation: Hyperthyroidism is caused by too much release of thyroid hormone.

3. Ans. D

Explanation: Symptoms of too much T3 and T4 in your body causes: anxiety, irritability or moodiness, nervousness, hyperactivity, sweating or sensitivity to high temperatures, hand trembling (shaking), hair loss, missed or light menstrual periods.

4. Ans. C

Explanation: Goitre is a bulge in the neck. A toxic goitre is associated with hyperthyroidism, and a simple or endemic goitre, is caused by iodine deficiency.

5. Ans. D

Explanation: Symptoms that may indicate too little T3 and T4 in the body causes hypothyroidism: trouble sleeping, tiredness and fatigue, difficulty concentrating, dry skin and hair, depression, sensitivity to cold temperature, frequent, heavy periods, joint and muscle pain.