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Zorluk: OrtaHormonal Coordination in Plants and Animals

Match each human regulatory hormone listed on the left with its corresponding physiological action or target mechanism on the right.

  • Parathormone (PTH)Increases plasma calcium ion (Ca2+Ca^{2+}) level by stimulating bone resorption
  • AldosteroneStimulates sodium ion (Na+Na^+) reabsorption in the distal renal tubules
  • OxytocinInduces contraction of uterine smooth muscle during labor and ejection of milk
  • CalcitoninPromotes calcium ion (Ca2+Ca^{2+}) deposition into bone tissue to lower plasma levels

Cevap

Parathormone matches with increasing plasma calcium levels via bone resorption; Aldosterone matches with stimulating sodium ion reabsorption in kidney tubules; Oxytocin matches with inducing uterine contraction and milk ejection; Calcitonin matches with promoting calcium deposition into bone matrix.
Each hormone is correctly matched according to its endocrine target and action: Parathormone elevates plasma calcium concentration, Aldosterone increases renal sodium reabsorption, Oxytocin induces uterine contractions and milk let-down, and Calcitonin lowers plasma calcium concentration by depositing calcium into bone.

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1
Determine the physiological action of Parathormone (PTH)
PTH raises plasma Ca2+Ca^{2+} levels by activating bone breakdown (resorption) and decreasing calcium excretion.
Parathyroid hormone regulates calcium homeostasis by preventing hypocalcemia.
2
Determine the function of Aldosterone
Aldosterone targets distal convoluted tubules and collecting ducts to reabsorb Na+Na^+.
As a principal mineralocorticoid, it regulates electrolyte balance and blood pressure.
3
Analyze the action of Oxytocin
Oxytocin acts on target reproductive smooth muscle tissues during parturition and lactation.
It directly triggers uterine contractions and the milk ejection reflex.
4
Identify the function of Calcitonin
Calcitonin works antagonistically to PTH by depositing excess blood Ca2+Ca^{2+} into bone tissue.
Thyroid C-cells release calcitonin to prevent hypercalcemia.

Anahtar Kavram

Endocrine regulation and physiological mechanisms of human hormones
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Konular

Hormonal Coordination in Plants and Animals

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