The most abundant thyroid hormone in blood is (A) Free T3 (B) T3 bound to TBG (C) Free T4 (D) T4 bound to TBG

The most abundant thyroid hormone in blood is (A) Free T3 (B) T3 bound to TBG (C) Free T4 (D) T4 bound to TBG
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Answer :  D
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One of the following does not bind T3 and T4: (A) Albumin (B) TBG (C) TBPA (D) Haptoglobin

Description : One of the following does not bind T3 and T4: (A) Albumin (B) TBG (C) TBPA (D) Haptoglobin

Last Answer : Answer : D

In primary hypothyroidism the useful estimation is of (A) T3 (B) T4 (C) TBG (D) Autoantibodies

Description : In primary hypothyroidism the useful estimation is of (A) T3 (B) T4 (C) TBG (D) Autoantibodies

Last Answer : Answer : D

The most powerful thyroid hormone is (A) Reverse T3 (B) DIT (C) T3 (D) T4

Description : The most powerful thyroid hormone is (A) Reverse T3 (B) DIT (C) T3 (D) T4

Last Answer : Answer : C

The following are true: a. thyroxine is formed by iodination of tyrosine b. the ratio of T3 :T4 secreted by the thyroid gland is 1:5 c. about 99.5% of thyroxines is protein bound d. T3 is more active than T4

Description : The following are true: a. thyroxine is formed by iodination of tyrosine b. the ratio of T3 :T4 secreted by the thyroid gland is 1:5 c. about 99.5% of thyroxines is protein bound d. T3 is more active than T4

Last Answer : T3 is more active than T4

The following are true about the thyroid hormone a. iodide ions enter the follicle cells by passive diffusion b .T4 and T3 bind to the receptors in nuclei c. thyroxine, once synthesized, is coupled to thyroglobulin until released d. a greater proportion of tri-iodothyronine is formed when iodine is deficient

Description : The following are true about the thyroid hormone a. iodide ions enter the follicle cells by passive diffusion b .T4 and T3 bind to the receptors in nuclei c. thyroxine, once ... thyroglobulin until released d. a greater proportion of tri-iodothyronine is formed when iodine is deficient

Last Answer : T4 and T3 bind to the receptors in nuclei

All the following statements about thyrotropin releasing hormone are true except (A) It is secreted by hypothalamus (B) It is a pentapeptide (C) It increases the secretion of TSH (D) Its secretion is inhibited by high level of T3 and T4 in blood

Description : All the following statements about thyrotropin releasing hormone are true except (A) It is secreted by hypothalamus (B) It is a pentapeptide (C) It increases the secretion of TSH (D) Its secretion is inhibited by high level of T3 and T4 in blood

Last Answer : Answer : B

High level of T3 and T4 and low TSH in serum indicates (A) Hyperthyroidism of pituitary origin (B) Hypothyroidism of pituitary origin (C) Hyperthyroidism of thyroid origin (D) Hypothyroidism of thyroid origin

Description : High level of T3 and T4 and low TSH in serum indicates (A) Hyperthyroidism of pituitary origin (B) Hypothyroidism of pituitary origin (C) Hyperthyroidism of thyroid origin (D) Hypothyroidism of thyroid origin

Last Answer : Answer : C

Administration of TSH increases serum T3 and T4 in (A) Hyperthyroidism of pituitary origin (B) Hyperthyroidism of thyroid origin (C) Hypothyroidism of pituitary origin (D) Hypothyroidism of thyroid origin

Description : Administration of TSH increases serum T3 and T4 in (A) Hyperthyroidism of pituitary origin (B) Hyperthyroidism of thyroid origin (C) Hypothyroidism of pituitary origin (D) Hypothyroidism of thyroid origin

Last Answer : Answer : C

Reverse T3 is (A) A synthetic compound given counter the effects of T3 (B) Formed from T4 but has no hormone function (C) Formed by isomerisation of T3 (D) Formed from T4 and has hormone function

Description : Reverse T3 is (A) A synthetic compound given counter the effects of T3 (B) Formed from T4 but has no hormone function (C) Formed by isomerisation of T3 (D) Formed from T4 and has hormone function

Last Answer : Answer : B

A 20 yr. old female patient presents with pain in thyroid region of the neck since few days. She gives recent history of mumps. On palpation thyroid is tender and her thyroid function test reveals raised levels of T3, T4 and low TSH. Iodine uptake is also low. Probable diagnosis in this case is:

Description : Which of the following is the most common cause of Hypothyroidism in iodine sufficient area? Options: 1) Iatrogenic hypothyroidism 2) Post-partum thyroiditis 3) Autoimmune thyroiditis 4) Thyroid aplasia

Last Answer : Correct Answer: 3) Autoimmune thyroiditis

A 20 yr. old female patient presents with pain in thyroid region of the neck since few days. She gives recent history of mumps. On palpation thyroid is tender and her thyroid function test reveals raised levels of T3, T4 and low TSH. Iodine uptake is also low. Probable diagnosis in this case is:1) de Quervain’s thyroiditis 2) Silent thyroiditis 3) Primary thyrotoxicosis 4) Hashimoto’s thyroiditis

Description : A 20 yr. old female patient presents with pain in thyroid region of the neck since few days. She gives recent history of mumps. On palpation thyroid is tender and her thyroid function ... 1) de Quervain's thyroiditis 2) Silent thyroiditis 3) Primary thyrotoxicosis 4) Hashimoto's thyroiditis

Last Answer : Correct Answer: 1) de Quervain’s thyroiditis

Thyroid hormones are present in blood (A) In free form (B) In association with thyroxine binding globulin (TBG) (C) In association with thyroxine binding prealbumin (TBPA) (D) Mainly in association with TBG, partly in free form and sometimes in association with TBPA also

Description : Thyroid hormones are present in blood (A) In free form (B) In association with thyroxine binding globulin (TBG) (C) In association with thyroxine binding prealbumin (TBPA) (D) Mainly in association with TBG, partly in free form and sometimes in association with TBPA also

Last Answer : Answer : D

Insufficient free T3 and T4 results in (A) Grave’s disease (B) Mysoedema (C) Cushing syndrome(D) Gigantism

Description : Insufficient free T3 and T4 results in (A) Grave’s disease (B) Mysoedema (C) Cushing syndrome(D) Gigantism

Last Answer : Answer : B

When iodine supplies are sufficient the T3 and T4 ratio in thyroglobulin is (A) 1 : 2 (B) 1 : 4 (C) 1 : 7 (D) 1 : 10

Description : When iodine supplies are sufficient the T3 and T4 ratio in thyroglobulin is (A) 1 : 2 (B) 1 : 4 (C) 1 : 7 (D) 1 : 10

Last Answer : Answer : C

Iodine is the constituent of (A) T3 and T4 (B) PTH (C) Insulin (D) Adrenaline

Description : Iodine is the constituent of (A) T3 and T4 (B) PTH (C) Insulin (D) Adrenaline

Last Answer : Answer : A

All the following statements about TSH are true except (A) It is a tropic hormone (B) It acts on para-follicular cells of thyroid glands (C) Its receptors are membrane-bound (D) Its second messenger is cyclic AMP

Description : All the following statements about TSH are true except (A) It is a tropic hormone (B) It acts on para-follicular cells of thyroid glands (C) Its receptors are membrane-bound (D) Its second messenger is cyclic AMP

Last Answer : Answer : B

What is the function of thyroxine (T4) and triiodothyronine (T3)? -Biology

Description : What is the function of thyroxine (T4) and triiodothyronine (T3)? -Biology

Last Answer : answer:

What digital carrier transmits a digital signal at 274.176 Mbps? A. T1 B. T3 C. T2 D. T4

Description : What digital carrier transmits a digital signal at 274.176 Mbps? A. T1 B. T3 C. T2 D. T4

Last Answer : D. T4

A digital carrier facility used to transmit a DSI-formatted signal at 1.544. Mbps. A. T2 B. T1 C. T4 D. T3

Description : A digital carrier facility used to transmit a DSI-formatted signal at 1.544. Mbps. A. T2 B. T1 C. T4 D. T3

Last Answer : B. T1

In a terrestrial ecosystem such as forest, maximum energy is in which trophic level? (a) T3 (b) T4 (c) T1

Description : In a terrestrial ecosystem such as forest, maximum energy is in which trophic level? (a) T3 (b) T4 (c) T1

Last Answer : (c) T1

Bamboo plant is growing in a fir forest then what will be the trophic level of it? (a) First trophic level (T1) (b) Second trophic level (T2) (c) Third trophic level (T3) (d) Fourth trophic level (T4)

Description : Bamboo plant is growing in a fir forest then what will be the trophic level of it? (a) First trophic level (T1) (b) Second trophic level (T2) (c) Third trophic level (T3) (d) Fourth trophic level (T4)

Last Answer : a) First trophic level (T1)

Which phage always carries a small piece of E.coli genome? A.Lambda B.Mu C.T4 D.T3

Description : Which phage always carries a small piece of E.coli genome? A.Lambda B.Mu C.T4 D.T3

Last Answer : B.Mu

Which phage always carries a small piece of E.coli genome? A- Lambda B- .Mu C- T4 D- T3

Description : Which phage always carries a small piece of E.coli genome? A- Lambda B- .Mu C- T4 D- T3

Last Answer : .Mu

This hormone has disulphide group: (A) Glucagon (B) Insulin (C) T4 (D) Epinephrine

Description : This hormone has disulphide group: (A) Glucagon (B) Insulin (C) T4 (D) Epinephrine

Last Answer : Answer : B

The normal serum level of triiodothyronine (T3) is (A) 0.2–0.5 ng/ml (B) 0.7–2.0 ng/ml (C) 2.0–4.0 ng/ml (D) 5.0–8.0 ng/ml HORMONE METABOLISM 211

Description : The normal serum level of triiodothyronine (T3) is (A) 0.2–0.5 ng/ml (B) 0.7–2.0 ng/ml (C) 2.0–4.0 ng/ml (D) 5.0–8.0 ng/ml HORMONE METABOLISM 211

Last Answer : Answer : B

Which ONE of the following is true concerning Antidiuretic hormone(ADH)? 1) Carbamazepine potentiates it's release 2) Ethanol potentiates it's release 3) It circulates in the blood bound to neurohypophysin 4) It is a cyclic octapeptide 5) It is synthesised in the posterior pituitary

Description : Which ONE of the following is true concerning Antidiuretic hormone(ADH)? 1) Carbamazepine potentiates it's release 2) Ethanol potentiates it's release 3) It circulates in the blood bound to neurohypophysin 4) It is a cyclic octapeptide 5) It is synthesised in the posterior pituitary

Last Answer : Answers-1 ADH is a nonapeptide manufactured in the paraventricular and supra-optic nuclei of the hypothalamus and released from the posterior pituitary. It acts on the collecting ducts improving ... agents such as thiazides and SSRIs may potentiate its release. Ethanol usually inhibits release.

Protein bound iodine is _________ bound to protein. (A) Iodine (B) Thyroid hormones (C) Thyroxine (D) Tri iodo thyronine

Description : Protein bound iodine is _________ bound to protein. (A) Iodine (B) Thyroid hormones (C) Thyroxine (D) Tri iodo thyronine

Last Answer : Answer : B

The only correct statement about hormone receptors is (A) Receptors for protein hormones are present in cytosol (B) Receptors for steroid hormones are membrane bound (C) Hormone-receptor binding is irreversible (D) Receptors can undergo down regulation and up regulatoin

Description : The only correct statement about hormone receptors is (A) Receptors for protein hormones are present in cytosol (B) Receptors for steroid hormones are membrane bound (C) Hormone-receptor binding is irreversible (D) Receptors can undergo down regulation and up regulatoin

Last Answer : Answer : D

Serum TBG level?

Description : Serum TBG level?

Last Answer : DefinitionSerum TBG level is a blood test to measure the level of a protein that moves thyroid hormone throughout your body. The protein is called thyroxine binding globulin (TBG).Alternative NamesSerum thyroxine ... from your arm.Once the blood has been collected, the needle is removed, and the

Calcitomica is antagonist to (A) Serotonin (B) Thyroxine (C) Tri iodo thyronine (D) Para thyroid hormone

Description : Calcitomica is antagonist to (A) Serotonin (B) Thyroxine (C) Tri iodo thyronine (D) Para thyroid hormone

Last Answer : Answer : D

Parathyroid hormone (PTH) is synthesised in (A) Chief cells of parathyroid glands (B) Oxyphil cells of parathyroid glands (C) Para follicular cells of thyroid glands (D) Follicular cells of thyroid gland

Description : Parathyroid hormone (PTH) is synthesised in (A) Chief cells of parathyroid glands (B) Oxyphil cells of parathyroid glands (C) Para follicular cells of thyroid glands (D) Follicular cells of thyroid gland

Last Answer : Answer : A

An amino acid used for the synthesis of thyroid hormone is (A) Tyrosine (B) Tryptophan (C) Histidine (D) Proline

Description : An amino acid used for the synthesis of thyroid hormone is (A) Tyrosine (B) Tryptophan (C) Histidine (D) Proline

Last Answer : Answer : A

The leyding cell activity is controlled by (A) Intestitial cell stimulating hormone (B) Adernocortex stimulating hormone (C) Thyroid stimulating hormone (D) Melanocyte stimulating harmone

Description : The leyding cell activity is controlled by (A) Intestitial cell stimulating hormone (B) Adernocortex stimulating hormone (C) Thyroid stimulating hormone (D) Melanocyte stimulating harmone

Last Answer : Answer : A

Thyroid stimulating hormone is a dimer. The α-subunits of TSH, LH, FSH are identical. Thus the biological specificity must therefore be β subunit in which the number of amino acids is (A) 78 (B) 112 (C) 130 (D) 199

Description : Thyroid stimulating hormone is a dimer. The α-subunits of TSH, LH, FSH are identical. Thus the biological specificity must therefore be β subunit in which the number of amino acids is (A) 78 (B) 112 (C) 130 (D) 199

Last Answer : Answer : B

Thyroid hormone: a. increases the absorption of carbohydrate from the intestine b. exerts a negative feedback action on TSH production c. increases the concentration of 2,3-DPG within the red blood cells d. all above

Description : Thyroid hormone: a. increases the absorption of carbohydrate from the intestine b. exerts a negative feedback action on TSH production c. increases the concentration of 2,3-DPG within the red blood cells d. all above

Last Answer : all above

The hypothalamus contains cells which are sensitive to: a. PO2 b. arterial blood pressure c. [H+] d. TSH (thyroid-stimulating hormone) concentration

Description : The hypothalamus contains cells which are sensitive to: a. PO2 b. arterial blood pressure c. [H+] d. TSH (thyroid-stimulating hormone) concentration

Last Answer : TSH (thyroid-stimulating hormone) concentration

Calcitonin is a thyroid hormone which (a) elevates calcium level in blood (b) has no effect on calcium (c) elevates potassium level in blood (d) lowers calcium level in blood.

Description : Calcitonin is a thyroid hormone which (a) elevates calcium level in blood (b) has no effect on calcium (c) elevates potassium level in blood (d) lowers calcium level in blood.

Last Answer : (d) lowers calcium level in blood.

Match the source gland with its respective hormone and function and select the correct option. Source Hormone Function gland (a) Anterior Oxytocin Contraction of uterus pituitary muscles during child birth (b) Posterior Vasopressin Stimulates pituitary reabsorption of water in the distal tubules in the nephron (c) Corpus Estrogen Supports pregnancy luteum (d) Thyroid Thyroxine Regulates blood calcium level

Description : Match the source gland with its respective hormone and function and select the correct option. Source Hormone Function gland (a) Anterior Oxytocin Contraction of uterus pituitary muscles during ... (c) Corpus Estrogen Supports pregnancy luteum (d) Thyroid Thyroxine Regulates blood calcium level

Last Answer : (b) Posterior Vasopressin Stimulates pituitary reabsorption of water in the distal tubules in the nephron

Which is an example of negative feedback? A) Nursing action stimulates the hypothalamus to release oxytocin that triggers mammary gland milk production. B) When the blood becomes dilute, ADH is no longer released from the hypothalamus. C) Uterine stretching sends nerve impulses to the hypothalamus that releases oxytocin that triggers uterine contraction. D) FSH and LH stimulate the gonads to produce sperm or eggs. E) TRH stimulates the anterior pituitary to release thyroid-stimulating hormone.

Description : Which is an example of negative feedback? A) Nursing action stimulates the hypothalamus to release oxytocin that triggers mammary gland milk production. B) When the blood becomes dilute, ADH ... produce sperm or eggs. E) TRH stimulates the anterior pituitary to release thyroid-stimulating hormone.

Last Answer : B) When the blood becomes dilute, ADH is no longer released from the hypothalamus

The free fatty acids in blood are (A) Stored in fat depots (B) Mainly bound to β-lipoproteins (C) Mainly bound to serum albumin (D) Metabolically most inactive

Description : The free fatty acids in blood are (A) Stored in fat depots (B) Mainly bound to β-lipoproteins (C) Mainly bound to serum albumin (D) Metabolically most inactive

Last Answer : Answer : C

T3 is (A) Thyroxine (B) Triodo thyronine (C) Triodo tyrosine (D) Reverse tri iodo thyronine

Description : T3 is (A) Thyroxine (B) Triodo thyronine (C) Triodo tyrosine (D) Reverse tri iodo thyronine

Last Answer : Answer : B

The normal serum level of thyroxine (T4) is (A) 2.0–4.0 µg/100 ml (B) 5.5–13.5 µg/100 ml (C) 14.0–20.3 µg/100 ml (D) 20.0–25.0 µg/100 ml

Description : The normal serum level of thyroxine (T4) is (A) 2.0–4.0 µg/100 ml (B) 5.5–13.5 µg/100 ml (C) 14.0–20.3 µg/100 ml (D) 20.0–25.0 µg/100 ml

Last Answer : Answer : B

Protein bound iodine in blood is present to the extent of _______ / dL (A) 3–8 mg (B) 4–8 mg (C) 3–8 gm (D) 4–8 gm

Description : Protein bound iodine in blood is present to the extent of _______ / dL (A) 3–8 mg (B) 4–8 mg (C) 3–8 gm (D) 4–8 gm

Last Answer : Answer : A

All the following statements regarding calcium are correct except (A) It diffuses as a divalent cation (B) It freely diffuses across the endoplasmic reticulum of muscle cells (C) It can exist in the blood as ionic form and also protein bound (D) It is found in high concentration in bones

Description : All the following statements regarding calcium are correct except (A) It diffuses as a divalent cation (B) It freely diffuses across the endoplasmic reticulum of muscle cells (C) It can exist in the blood as ionic form and also protein bound (D) It is found in high concentration in bones

Last Answer : Answer : B

Retinol is transported in blood bound to (A) Aporetinol binding protein (B) α2-Globulin (C) β-Globulin (D) Albumin

Description : Retinol is transported in blood bound to (A) Aporetinol binding protein (B) α2-Globulin (C) β-Globulin (D) Albumin

Last Answer : Answer : A

For those who have taken synthroid (thyroid hormone replacement therapy), how long did it take before you had more energy (if any improvement was noted)?

Description : For those who have taken synthroid (thyroid hormone replacement therapy), how long did it take before you had more energy (if any improvement was noted)?

Last Answer : My husband takes synthroid, and I'll answer as an observer. I didn't really notice that he had more energy, he still seems tired and he sleeps very deeply. He says (and has always said) that he can ... my husband were answering he would likely say that he didn't/doesn't notice any change - but I do.

What is the role of thyroid stimulating hormone? -Biology

Description : What is the role of thyroid stimulating hormone? -Biology

Last Answer : answer:

Which hormone is secreted by the thyroid gland ?

Last Answer : Thyroxine hormone is secreted from the thyroid

Name the hormone which stimulates the synthesis and secretion of thyroid hormones from the thyroid gland.

Description : Name the hormone which stimulates the synthesis and secretion of thyroid hormones from the thyroid gland.

Last Answer : Name the hormone which stimulates the synthesis and secretion of thyroid hormones from the thyroid gland.

Name the non-iodinized hormone secreted by paraforllicular cells of thyroid.

Description : Name the non-iodinized hormone secreted by paraforllicular cells of thyroid.

Last Answer : Name the non-iodinized hormone secreted by paraforllicular cells of thyroid. A. Calcitonin B. Oxytocin C. Vasopression D. Gonadotropin