Worksheetsphysio 2. Thyroid and Endocrine System Quiz
Total questions: 28
Worksheet time: 14mins
What is the primary function of the thyroid gland?
Regulating blood sugar levels
Producing thyroid hormones
Controlling heart rate
Filtering blood
Which hormone is produced by parafollicular C cells?
Calcitonin
Parathyroid hormone (PTH)
Triiodothyronine (T3)
Thyroxine (T4)
What is the role of parathyroid glands?
Producing insulin
Regulating calcium homeostasis
Stimulating thyroid hormone release
Regulating blood pressure
What is the primary regulator of calcium homeostasis?
Thyroid hormones
Calcitonin
Parathyroid hormone (PTH)
Vitamin D
What is the effect of parathyroid hormone (PTH)?
Stimulates thyroid hormone production
Inhibits bone resorption
Decreases calcium levels
Increases calcium availability
Which hormone is released in response to high plasma calcium concentration?
Triiodothyronine (T3)
Thyroxine (T4)
Thyroid-stimulating hormone (TSH)
Calcitonin
What is the primary function of thyroid hormones?
Enhancing immune response
Stimulating digestion
Controlling metabolism
Regulating blood pressure
What is the relationship between T3 and T4?
T4 has a shorter half-life than T3
T4 is converted to T3 in target tissues
T3 is more abundant than T4
T3 is produced by the parathyroid glands
What is the role of thyrotropin-releasing hormone (TRH)?
Inhibits thyroid hormone production
Stimulates the pituitary gland to release TSH
Stimulates the thyroid gland
Stimulates the adrenal cortex
What is the primary effect of thyroid hormones on metabolism?
Regulate blood sugar levels
No effect on metabolism
Increase metabolic rate
Decrease metabolic rate
What condition is characterized by an underactive thyroid gland?
Graves' disease
Goiter
Hypothyroidism
Hyperthyroidism
What is a common symptom of hypothyroidism?
Increased heart rate
Sensitivity to cold
Increased energy
Weight loss
What is the primary cause of Hashimoto's disease?
Iodine deficiency
Autoimmune response
Thyroidectomy
Radiation exposure
What is the effect of high thyroid hormone levels?
Decreased heart rate
Increased basal metabolic rate
Cold intolerance
Weight gain
What is the role of thyroid peroxidase (TPO) in thyroid hormone synthesis?
Inhibits TSH production
Catalyzes iodination of thyroglobulin
Stimulates calcitonin release
Converts T4 to T3
What is the primary function of calcitonin?
Increase calcium levels
Decrease calcium levels
Stimulate thyroid hormone production
Enhance bone resorption
What is the effect of TSH on the thyroid gland?
Inhibits hormone production
Stimulates hormone release
Decreases gland size
Inhibits iodine uptake
What is the primary target of parathyroid hormone?
Thyroid gland
Kidneys
Pancreas
Liver
What is the effect of thyroid hormones on growth and development?
Decreases bone density
Promotes growth and development
Inhibits growth
No effect on growth
What is the primary mineral involved in thyroid hormone synthesis?
Calcium
Zinc
Iodine
Iron
What is the effect of vitamin D on calcium levels?
Decreases calcium absorption
No effect on calcium levels
Increases calcium absorption
Inhibits calcium release
What is the primary symptom of hyperthyroidism?
Fatigue
Increased heart rate
Cold intolerance
Weight gain
What is the role of iodine in thyroid hormone synthesis?
Decreases hormone activity
No role in synthesis
Essential for hormone production
Inhibits hormone production
What is the effect of thyroid hormones on macronutrient metabolism?
No effect on metabolism
Inhibits metabolism
Decreases energy availability
Stimulates metabolism
What is the relationship between T3 and T4 in terms of potency?
T3 is less potent than T4
They have equal potency
T4 is more potent than T3
T3 is more potent than T4
What is the primary function of thyroglobulin?
Store thyroid hormone precursors
Transport thyroid hormones in blood
Stimulate TSH release
Inhibit hormone synthesis
What is the effect of TSH on thyroid hormone synthesis?
Inhibits synthesis
Stimulates synthesis
No effect on synthesis
Decreases hormone levels
What is the primary cause of goiter?
Thyroid cancer
Autoimmune response
Iodine deficiency
Excess TSH production
