#calcium regulation

Parathyroid Gland and Thymus

Which of the following hormones increases blood calcium levels?

PTH, secreted by the parathyroid glands, increases blood calcium levels by stimulating bone resorption.

Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Parathyroid Gland and Thymus

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Parathyroid Gland and Thymus

What is the function of the parathyroid hormone (PTH)?

PTH increases blood calcium levels by stimulating bone resorption and calcium absorption in the intestines.

Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Parathyroid Gland and Thymus

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Parathyroid Gland and Thymus

Which hormone is responsible for regulating blood calcium levels by increasing calcium absorption?

Parathyroid Hormone (PTH) increases calcium levels in the blood by stimulating calcium absorption in the intestines and resorption from bones.

Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Parathyroid Gland and Thymus

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Parathyroid Gland and Thymus

Which of the following statements about parathyroid hormone (PTH) is correct?

PTH increases blood calcium levels by promoting calcium absorption from the intestines.

Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Parathyroid Gland and Thymus

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Parathyroid Gland and Thymus

Which hormone is responsible for stimulating the growth and maintenance of bones?

Growth hormone (GH) stimulates bone growth and maintenance by promoting cell division and protein synthesis.

Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Parathyroid Gland and Thymus

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Parathyroid Gland and Thymus

Which of the following statements about parathyroid hormone (PTH) is incorrect?

PTH is secreted by the parathyroid gland, not the thyroid gland.

Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Parathyroid Gland and Thymus

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Pineal Gland and Thyroid Gland

Which hormone is responsible for increasing calcium levels in the blood?

PTH, secreted by the parathyroid gland, increases calcium levels in the blood by promoting calcium absorption from bones and intestines.

Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Pineal Gland and Thyroid Gland

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Pineal Gland and Thyroid Gland

Which of the following statements about calcitonin is correct?

Calcitonin, secreted by the thyroid gland, inhibits bone resorption, thereby reducing blood calcium levels.

Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Pineal Gland and Thyroid Gland

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Pineal Gland and Thyroid Gland

Which hormone regulates calcium levels by inhibiting bone resorption?

Calcitonin, secreted by the thyroid gland, lowers blood calcium levels by inhibiting bone resorption.

Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Pineal Gland and Thyroid Gland

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Pineal Gland and Thyroid Gland

Which hormone is secreted by the parathyroid gland and increases blood calcium levels?

PTH increases blood calcium levels by stimulating calcium release from bones and increasing absorption in the intestines.

Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Pineal Gland and Thyroid Gland

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Appendicular Skeleton - Limb Bones

Which hormone plays a key role in increasing calcium levels in the blood by acting on bones?

Parathyroid hormone increases calcium levels by promoting bone resorption.

Ref: NCERT Class 11 Biology Chapter 17: Locomotion and Movement Appendicular Skeleton - Limb Bones

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