ESR [018] The Normal Thyroid Axis

Question 1

total weight of thymus ?

Answer 1

5-15g

Question 2

Position of thymus ?

Answer 2

below the larynx and infront of the trachea

Question 3

Answer 3

Question 4

Answer 4

Question 5

thyroid tissue

Answer 5

Question 6

thyroid follicles , how do their morphology reflect on their effectivity ?

Answer 6

Question 7

Answer 7

Question 8

Synthesis of thyroid hormones steps ?

Answer 8

I. Iodine Transport

II. Thyroglobulin Synthesis

III. Thyroid Peroxidase (TPO) ;

III. Endocytosis of Peroxidase-processed Thyroglobulin

IV: Release of T4 and T3 from Thyroglobulin

Question 9

Answer 9

Question 10

Answer 10

Question 11

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Question 12

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Question 13

Answer 13

Question 14

Answer 14

Question 15

Normal TSH range ?

Answer 15

Normal TSH range = 0.5- 5.0 mU/mL

Question 16

Normal total T4 concentration ?

Answer 16

Total T4 = 64 – 155 nmol/L

Question 17

Normal total T3 concentration ?

Answer 17

Total T3 = 1.1 – 3.0 nmol/L

Question 18

Answer 18

Question 19

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Question 20

Answer 20

Question 21

WHAT IS THE EFFECT OF TSH ON THE THYROID GLAND?

Answer 21

Question 22

How does TSH stimlate the thyroid ?

Answer 22

Question 23

Answer 23

Question 24

superfamily that Thyroid hormone receptors (TR) belongs to ?

Answer 24

member of steroid-thyroid hormone receptor superfamily

Question 25

Answer 25

Question 26

Physiological effects of T3 on the mitochondria ?

Answer 26

Question 27

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Question 28

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Question 29

comment on vasculature of thyroid folliceles

Answer 29

Question 30

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Question 31

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Question 32

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Question 33

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Question 34

Answer 34