Thyroid Hormone

Question 1

Metabolic effects of TH

Answer 1

1) Heat regulation
2) NA+/K+ ATPase pump regulation
3) Modulate BMR
4) Anabolic and Catabolic effects

Question 2

Anabolic effects of TH

Answer 2

1) Glucose –> glycogen
2) Protein synthesis
3) Store fat

Question 3

Catabolic effects of TH

Answer 3

1) Glycogen –> glucose
2) Protein breakdown
3) Fat breakdown

Question 4

Cardiovascular effects of TH

Answer 4

1) Increase heart responsiveness to catecholamines
2) Increase heart rate
3) Force heart contraction
4) Increase vasodilation

Question 5

Growth effects of TH

Answer 5

1) Stimulate GH secretion
2) Promote GH and IGF effects
3) Low TH = stunted growth

Question 6

Symptoms of lack of TH

Answer 6

1) feel cold
2) weight gain
3) hair loss
4) puffy face
5) dry skin and hair

Question 7

Causes of lack of TH

Answer 7

1) Damage to thyroid gland and not producing TH
2) Damage to TSH and not producing enough TSH
3) Not enough iodine
4) Not enough TRH
5) Hypothalamus damage

Question 8

Treatment for lack of TH

Answer 8

1) Iodine supplement
2) Thyroid hormones

Question 9

Symptoms of excess TH

Answer 9

1) increased BMR
2) heat intolerant
3) weight loss
4) irritability
5) heart failure due to increase cardiac output

Question 10

Causes of excess TH

Answer 10

Inflammation or excessive growth of thyroid

Question 11

Treatment for excess TH

Answer 11

1) Radioactive iodine to selectively kill thyroid
2) Surgical removal of thyroid
3) Anti-thryoid drugs
4) Low iodine diet