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Flashcards in Anatomy Deck (15)
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1
Q

what does the thyroid gland secrete?

A

thyroxine, tri-odothyronine and calcitonin

2
Q

What does the parathyroid hormone secrete?

A

parathyroid hormone

3
Q

what os the thyroid gland made up of?

A

follicles that are made up of follicular cells and colloid tyrosine containing thyroglobulin spheres

4
Q

what is outside the follicle?

A

parafollicular C cells

5
Q

what is the process of iodine storage?

A

1- iodine taken up by follicular cells 2- iodine attaches to tyrosine residues on thyroglobulin 3- coupling of MIT and DIT 4- stored in colloid thyroglobulin

6
Q

which stage is inhibited by carbimazole and propylthiouracil

A

2

7
Q

what does carbimazole and propylthiouracil treat?

A

hyperthyroidism

8
Q

what is T4?

A

thyroxine

9
Q

what is a majorly biologically active thyroid hormone?

A

T3 (triiodothyronine)

10
Q

Are T3 and T4 hydrophobic or hydrophilic?

A

Hydrophobic

11
Q

Are T4 and T3 bound by plasma proteins?

A

Aye most of them

12
Q

is bound or unbound Ts/4 available to the tissues?

A

unbound!

13
Q

Do thyroid hormones increase responsiveness to adrenaline and sympathetic NS neurotransmitter, noradrenaline by increasing number of receptors?

A

yes

14
Q

what are some symptoms of hypothyroidism

A

reduced BMR, slow pulse, fatigue, lethargy, cold intolerance, tendency to put weight on easily

15
Q

what are hyperthyroidism sings?

A

Increased BMR, fast pulse, increased nervousness, sweating, lose weight