1. Non- functional follicles
2. Functional follicles found in the main lobes of thyroid
3. Non-functional follicles found in the main lobes of thyroid
4. Functional follicles embedded in non-glandular isthmus
Functional follicles embedded in non-glandular isthmus
1. Regulation of growth
2. Regulation of calcium metabolism
3. Metamorphosis
4. Increasing basal metabolism
Regulation of calcium metabolism
1. Thyroxine
2. Testosterone
3. Cortisol
4. Pituitrin
Testosterone
1. Insulin
2. Thyroxine
3. Afrenaline and Nor-adrenaline
4. Pituitary growth hormones
Afrenaline and Nor-adrenaline
1. Nerve cord
2. Endostyle
3. Neural gland
4. Pharyngeal gill pouches
Endostyle
1. Oxytocin
2. FSH
3. Luteotropic hormone
4. ICSH
ICSH
1. Cushing syndrome
2. Simmond’s disesse
3. Tetany
4. None
None
1. Acyclic and not affected by seasonal changes
2. Cyclic phenomenon with seasonal changes
3. Effect of exercise
4. A regular and constant feature
Cyclic phenomenon with seasonal changes
1. Cholesterol
2. Nucleic acid
3. Amino acid
4. Mucoprotein
Cholesterol
1. Preparation of uterus for pregnancy
2. To maintain the pregnancy
3. To complete the formation of milk in the mammary glands
4. Both (A) and (B)
To maintain the pregnancy