MBBS, Dip. Card: M.Phil:TCM(China), DMCH

Assistant Prof.Physiology

Thyroid Gland

Dr.Akbar Nawaz Khan

MCQHypersecretion of Thyroxin would be

caused by an increase in the release of? A) FSH or LH B) STHRH or STH C) TSH or ACTH D) TRH or TSH

MCQ1) Thyroid hormones belong to which class of

hormone? a) steroids b) proteins c) polypeptides d) amino acid derivatives

MCQ1) Thyroid hormones belong to which class of

hormone? a) steroids b) proteins c) polypeptides d) amino acid derivatives (T)

MCQC-cells are present in?

a) thyroid gland

b) adrenal cortex

c) parathyroid gland

d) pituitary gland

MCQC-cells are present in?

a) thyroid gland (T)

b) adrenal cortex

c) parathyroid gland

d) pituitary gland

MCQThyroid gland secretes approximately ___

% T4 and ___%T3?

a) 20,80

b) 10,90

c) 80,20

d) 90,10

MCQThyroid gland secretes approximately ___

% T4 and ___%T3?

a) 20,80

b) 10,90

c) 80,20

d) 90,10

MCQNot an action of thyroid hormone?

a) raises BMR

b) increases cardiac output

c) decreases cholesterol

d) loss of libido

MCQNot an action of thyroid hormone?

a) raises BMR

b) increases cardiac output

c) decreases cholesterol

d) loss of libido (T)

MCQA patient with hypothyroidism is likely to

have?

a) subnormal body temperature

b) lid retraction

c) exophthalmos

d) moist hands and feet

MCQA patient with hypothyroidism is likely to

have?

a) subnormal body temperature

b) lid retraction

c) exophthalmos (T)

d) moist hands and feet

MCQTrue or false regarding thyroid

hormone? 

a. In the circulation , thyroxin is transported bound to thyroglobulin b. I - trapping by thyroid cells does need energy c. I - is oxidized prior to iodination of thyrosine d. Thyroid peroxidase inhibitors are used in the treatment of hyperthyroidism e. Low thyroxin level result in deafness

MCQTrue or false regarding thyroid

hormone? 

a. In the circulation , thyroxin is transported bound to thyroglobulin b. I - trapping by thyroid cells does need energy c. I - is oxidized prior to iodination of thyrosine (T)d. Thyroid peroxidase inhibitors are used in the treatment of hyperthyroidism  (T)e. Low thyroxin level result in deafness (T)

MCQWhich of the following act via binding

directly to the receptors of the nucleus 

a) Thyroxin b) ACTHc) LH d) Prolactin e) Estrogen

MCQWhich of the following act via binding

directly to the receptors of the nucleus 

a) Thyroxin (T)b) ACTHc) LH d) Prolactin e) Estrogen

MCQAll are features of

adult hypothyroidism except?

a. Mental retardationb. Inability to tolerance coldc. Deafnessd. Bradycardiac. Constipation

MCQAll are features of

adult hypothyroidism except?

a. Mental retardation (T)b. Inability to tolerance coldc. Deafnessd. Bradycardiac. Constipation

Mental retardation is feature of hypothyroidism in children

MCQFactitious hyperthyrosidism , all are true except?

it is an uncommon condition due to self administration of T4

the radio-iodine uptake scan is suppressed

undetectable serum thyroglobulin

high T3:T4 ratio

the TSH is suppressed

SYNTHESIS OF THYROID HORMONES

Thyroxine binding globulin(TBG)

Thyroxine binding Prealbumin

Albumin

BY increasing the Transition of RNA

BY increasing the transcription of DNA to RNA

By increasing the Activity of Mitochondria

By increasing the Activity of Cellular Enzymes

iv. On Arterial Blood Pressure

On Development of Central Nervous System

On the Normal Function of Central Nervous System

Role of TSH

Plasma Level of TSH

Mode of Action of TSH

Regulation of secretion of thyroid hormones

Causes for hyperthyroidism

Symptoms of hyperthyroidism

Exophthalmos

Myxedema

MCQ

• Yellowish tint of skin in myxoedema is due to?

• a) anaemia

• b) increased bilirubin level

• c) decreased cholesterol

• d) carotenemia

Cretinism (3 months old baby) (Courtesy: Prof Mafauzy mohamad)