Quiz
Thyroid Gland
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Questions in this quiz (13)
1Label the thyroid gland

- ALarynx
- Btrachea
- CThyroid gland
- DIsthmus
2Label the histology of the thyroid gland

- Acolloid
- Bfollicular cells (secrete hormone)
- Ccapillary
- Dmade of follicles
3The thyroid gland secretes [blank_start]triiodothyronine[blank_end] (T[blank_start]3[blank_end]) and [blank_start]thyroxine[blank_end] (T[blank_start]4[blank_end]). It secretes less T[blank_start]3[blank_end] despite it having more biological activity. They are made from an amino acid called [blank_start]tyrosine[blank_end] which is [blank_start]iodinated[blank_end]. In plasma they are bound to [blank_start]albumin[blank_end].
- Atriiodothyronine
- B3
- Cthyroxine
- D4
- E3
- Ftyrosine
- Giodinated
- Halbumin
4Synthesis of thyroid hormones:
1. [blank_start]Thyroglobulin[blank_end] is synthesised in rough ER and transported into the colloid.
2. [blank_start]Iodide[blank_end] is actively transported from the bloodstream into the [blank_start]follicular cells[blank_end] and then oxidised to [blank_start]Iodine[blank_end].
3. Iodine attaches to the [blank_start]tyrosine[blank_end] on the thyroglobulin molecule forming [blank_start]MIT[blank_end] and [blank_start]DIT[blank_end].
4. They are then linked to form [blank_start]T3[blank_end] and [blank_start]T4[blank_end].
5. Thyroglobulin colloid is [blank_start]endocytosed[blank_end].
6. Lysosomal enzymes [blank_start]cleave[blank_end] T3 and T4 from thyroglobulin and hormones [blank_start]diffuse into bloodstream[blank_end].- AThyroglobulin
- BIodide
- Cfollicular cells
- DIodine
- Etyrosine
- FMIT
- GDIT
- HT3
- IT4
- Jendocytosed
- Kcleave
- Ldiffuse into bloodstream
5The major advantage of the synthesis of thyroid hormones is that they can be [blank_start]stored[blank_end].
- Astored
6Thyroid hormones act on:
1. [blank_start]Metabolism[blank_end]
2. [blank_start]Heat Production[blank_end]
3. [blank_start]Growth and Development[blank_end]
4. [blank_start]Cardiovascular function[blank_end]- AMetabolism
- BHeat Production
- CGrowth and Development
- DCardiovascular function
7Label the negative feedback diagram

- Astress
- Bcold stress and low metabolic rate
- Cthyrotrophin releasing hormone (TRH)
- Dthyroid-stimulating hormone (TSH)
- EThyroxine (T4) and T3
8Having a hypothyroid means your thyroid is overactive and leads to increased metabolic rate and weight loss
- ATrue
- BFalse
9What are symptoms of hypothyroidism?
- Asensitivity to cold
- Bweight loss
- Cweight gain
- Dlethargy
- Eimpaired memory
- Freduced metabolic rate
- Gincreased metabolic rate
- Hincreased cardiac output
- Idecreased cardiac output
10Hypothyroidism is diagnosed by [blank_start]low[blank_end] plasma levels of T3 and T4. The treatment is [blank_start]thyroxine[blank_end].
- Alow
- Bthyroxine
11What is the cause of hypothyroidism?
- Aiodine deficiency
- Bautoimmune disease (grave's)
- Cautoimmune disease (hashimoto's thyroiditis)
12What are the symptoms of hyperthyroidism?
- Again of weight
- Bloss of weight
- Csensitivity to cold
- Dexcessive sweating
- Eanxiety/nervousness
- Flethargy
- Gdry, cold skin
- Hraised metabolic rate
- Ireduced metabolic rate
- Jincreased heart rate
13The treatment of hyperthyroidism is [blank_start]surgical removal[blank_end], ingestion of [blank_start]radioactive iodine[blank_end] or [blank_start]drugs[blank_end] that interfere with ability to make the hormones.
- Asurgical removal
- Bradioactive iodine
- Cdrugs
Information
- Description
- Biology (Structure and Function ) Quiz on Thyroid Gland , created by Beth Morgan on 04/05/2017.
- Author
- Beth Morgan
- Language
- English
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- History
- Created on 4 May 2017 · updated on 4 May 2017
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